diff --git a/HISTORY.md b/HISTORY.md
index 8aaa02ee3..e80f9edfe 100644
--- a/HISTORY.md
+++ b/HISTORY.md
@@ -1,3 +1,8 @@
+## v2.7.0, 2023-May-XX
+
+* [#413](https://github.com/meteor/blaze/pull/413) Added support for Promises in Spacebars.call and Spacebars.dot.
+* [#412](https://github.com/meteor/blaze/pull/412) Implemented async bindings in #let.
+
 ## v2.6.2, 2023-April-21
 
 * [#403](https://github.com/meteor/blaze/pull/403) Add TS types to core
diff --git a/packages/blaze/.versions b/packages/blaze/.versions
index 9a67b546b..6587020c0 100644
--- a/packages/blaze/.versions
+++ b/packages/blaze/.versions
@@ -1,23 +1,23 @@
 allow-deny@1.1.1
-babel-compiler@7.10.3
+babel-compiler@7.10.4
 babel-runtime@1.5.1
 base64@1.0.12
 binary-heap@1.0.11
-blaze@2.6.2
+blaze@2.7.0
 blaze-tools@1.1.3
 boilerplate-generator@1.7.1
 caching-compiler@1.2.2
 caching-html-compiler@1.1.2
-callback-hook@1.5.0
+callback-hook@1.5.1
 check@1.3.2
 ddp@1.4.1
 ddp-client@2.6.1
 ddp-common@1.4.0
-ddp-server@2.6.0
+ddp-server@2.6.1
 diff-sequence@1.1.2
-dynamic-import@0.7.2
-ecmascript@0.16.6
-ecmascript-runtime@0.8.0
+dynamic-import@0.7.3
+ecmascript@0.16.7
+ecmascript-runtime@0.8.1
 ecmascript-runtime-client@0.12.1
 ecmascript-runtime-server@0.11.0
 ejson@1.1.3
@@ -28,28 +28,28 @@ htmljs@1.1.1
 id-map@1.1.1
 inter-process-messaging@0.1.1
 jquery@1.11.10
-local-test:blaze@2.6.2
+local-test:blaze@2.7.0
 logging@1.3.2
-meteor@1.11.1
-minimongo@1.9.2
+meteor@1.11.2
+minimongo@1.9.3
 modern-browsers@0.1.9
 modules@0.19.0
 modules-runtime@0.13.1
-mongo@1.16.5
+mongo@1.16.6
 mongo-decimal@0.1.3
 mongo-dev-server@1.1.0
 mongo-id@1.0.8
-npm-mongo@4.14.0
+npm-mongo@4.16.0
 observe-sequence@1.0.16
 ordered-dict@1.1.0
 promise@0.12.2
 random@1.2.1
-react-fast-refresh@0.2.6
+react-fast-refresh@0.2.7
 reactive-var@1.0.12
 reload@1.3.1
 retry@1.1.0
 routepolicy@1.1.1
-socket-stream-client@0.5.0
+socket-stream-client@0.5.1
 spacebars@1.0.15
 spacebars-compiler@1.1.2
 templating@1.3.2
@@ -58,7 +58,7 @@ templating-runtime@1.3.2
 templating-tools@1.1.2
 test-helpers@1.3.1
 tinytest@1.2.2
-tracker@1.3.1
-underscore@1.0.12
-webapp@1.13.4
+tracker@1.3.2
+underscore@1.0.13
+webapp@1.13.5
 webapp-hashing@1.1.1
diff --git a/packages/blaze/builtins.js b/packages/blaze/builtins.js
index 044e68a45..c48009297 100644
--- a/packages/blaze/builtins.js
+++ b/packages/blaze/builtins.js
@@ -32,22 +32,41 @@ Blaze.With = function (data, contentFunc) {
   return view;
 };
 
+
+/**
+ * @summary Shallow compare of two bindings.
+ * @param {Binding} x
+ * @param {Binding} y
+ */
+function _isEqualBinding(x, y) {
+  return x && y ? x.error === y.error && x.value === y.value : x === y;
+}
+
 /**
  * Attaches bindings to the instantiated view.
  * @param {Object} bindings A dictionary of bindings, each binding name
  * corresponds to a value or a function that will be reactively re-run.
- * @param {View} view The target.
+ * @param {Blaze.View} view The target.
  */
 Blaze._attachBindingsToView = function (bindings, view) {
+  function setBindingValue(name, value) {
+    if (value && typeof value.then === 'function') {
+      value.then(
+        value => view._scopeBindings[name].set({ value }),
+        error => view._scopeBindings[name].set({ error }),
+      );
+    } else {
+      view._scopeBindings[name].set({ value });
+    }
+  }
+
   view.onViewCreated(function () {
     Object.entries(bindings).forEach(function ([name, binding]) {
-      view._scopeBindings[name] = new ReactiveVar();
+      view._scopeBindings[name] = new ReactiveVar(undefined, _isEqualBinding);
       if (typeof binding === 'function') {
-        view.autorun(function () {
-          view._scopeBindings[name].set(binding());
-        }, view.parentView);
+        view.autorun(() => setBindingValue(name, binding()), view.parentView);
       } else {
-        view._scopeBindings[name].set(binding);
+        setBindingValue(name, binding);
       }
     });
   });
@@ -149,7 +168,7 @@ Blaze.Each = function (argFunc, contentFunc, elseFunc) {
 
     for (var i = from; i <= to; i++) {
       var view = eachView._domrange.members[i].view;
-      view._scopeBindings['@index'].set(i);
+      view._scopeBindings['@index'].set({ value: i });
     }
   };
 
@@ -240,7 +259,7 @@ Blaze.Each = function (argFunc, contentFunc, elseFunc) {
               itemView = eachView.initialSubviews[index];
             }
             if (eachView.variableName) {
-              itemView._scopeBindings[eachView.variableName].set(newItem);
+              itemView._scopeBindings[eachView.variableName].set({ value: newItem });
             } else {
               itemView.dataVar.set(newItem);
             }
diff --git a/packages/blaze/lookup.js b/packages/blaze/lookup.js
index 87d427238..9111cd120 100644
--- a/packages/blaze/lookup.js
+++ b/packages/blaze/lookup.js
@@ -1,6 +1,37 @@
 import has from 'lodash.has';
 
-Blaze._globalHelpers = {};
+/** @param {(binding: Binding) => boolean} fn */
+function _createBindingsHelper(fn) {
+  /** @param {string[]} names */
+  return (...names) => {
+    const view = Blaze.currentView;
+
+    // There's either zero arguments (i.e., check all bindings) or an additional
+    // "hash" argument that we have to ignore.
+    names = names.length === 0
+      // TODO: Should we walk up the bindings here?
+      ? Object.keys(view._scopeBindings)
+      : names.slice(0, -1);
+
+    return names.some(name => {
+      const binding = _lexicalBindingLookup(view, name);
+      if (!binding) {
+        throw new Error(`Binding for "${name}" was not found.`);
+      }
+
+      return fn(binding.get());
+    });
+  };
+}
+
+Blaze._globalHelpers = {
+  /** @summary Check whether any of the given bindings (or all if none given) is still pending. */
+  '@pending': _createBindingsHelper(binding => binding === undefined),
+  /** @summary Check whether any of the given bindings (or all if none given) has rejected. */
+  '@rejected': _createBindingsHelper(binding => !!binding && 'error' in binding),
+  /** @summary Check whether any of the given bindings (or all if none given) has resolved. */
+  '@resolved': _createBindingsHelper(binding => !!binding && 'value' in binding),
+};
 
 // Documented as Template.registerHelper.
 // This definition also provides back-compat for `UI.registerHelper`.
@@ -103,9 +134,8 @@ function _lexicalKeepGoing(currentView) {
   return undefined;
 }
 
-Blaze._lexicalBindingLookup = function (view, name) {
+function _lexicalBindingLookup(view, name) {
   var currentView = view;
-  var blockHelpersStack = [];
 
   // walk up the views stopping at a Spacebars.include or Template view that
   // doesn't have an InOuterTemplateScope view as a parent
@@ -113,14 +143,16 @@ Blaze._lexicalBindingLookup = function (view, name) {
     // skip block helpers views
     // if we found the binding on the scope, return it
     if (has(currentView._scopeBindings, name)) {
-      var bindingReactiveVar = currentView._scopeBindings[name];
-      return function () {
-        return bindingReactiveVar.get();
-      };
+      return currentView._scopeBindings[name];
     }
   } while (currentView = _lexicalKeepGoing(currentView));
 
   return null;
+}
+
+Blaze._lexicalBindingLookup = function (view, name) {
+  const binding = _lexicalBindingLookup(view, name);
+  return binding && (() => binding.get()?.value);
 };
 
 // templateInstance argument is provided to be available for possible
diff --git a/packages/blaze/package.js b/packages/blaze/package.js
index fec862739..44693e29b 100644
--- a/packages/blaze/package.js
+++ b/packages/blaze/package.js
@@ -1,7 +1,7 @@
 Package.describe({
   name: 'blaze',
   summary: "Meteor Reactive Templating library",
-  version: '2.6.2',
+  version: '2.7.0',
   git: 'https://github.com/meteor/blaze.git'
 });
 
@@ -14,7 +14,7 @@ Npm.depends({
 
 Package.onUse(function (api) {
   api.use('jquery@1.11.9 || 3.0.0', { weak: true }); // should be a weak dep, by having multiple "DOM backends"
-  api.use('tracker@1.2.0');
+  api.use('tracker@1.3.0');
   api.use('check@1.3.1');
   api.use('observe-sequence@1.0.16');
   api.use('reactive-var@1.0.11');
@@ -62,7 +62,7 @@ Package.onTest(function (api) {
   api.use('test-helpers@1.2.0');
   api.use('jquery@1.11.9 || 3.0.0'); // strong dependency, for testing jQuery backend
   api.use('reactive-var@1.0.11');
-  api.use('tracker@1.1.0');
+  api.use('tracker@1.3.0');
 
   api.use('blaze');
   api.use('blaze-tools@1.1.3'); // for BlazeTools.toJS
diff --git a/packages/blaze/view.js b/packages/blaze/view.js
index 185197e62..aa3e95dd4 100644
--- a/packages/blaze/view.js
+++ b/packages/blaze/view.js
@@ -33,6 +33,14 @@
 /// general it's good for functions that create Views to set the name.
 /// Views associated with templates have names of the form "Template.foo".
 
+/**
+ * A binding is either `undefined` (pending), `{ error }` (rejected), or
+ * `{ value }` (resolved). Synchronous values are immediately resolved (i.e.,
+ * `{ value }` is used). The other states are reserved for asynchronous bindings
+ * (i.e., values wrapped with `Promise`s).
+ * @typedef {{ error: unknown } | { value: unknown } | undefined} Binding
+ */
+
 /**
  * @class
  * @summary Constructor for a View, which represents a reactive region of DOM.
@@ -81,6 +89,7 @@ Blaze.View = function (name, render) {
   this._hasGeneratedParent = false;
   // Bindings accessible to children views (via view.lookup('name')) within the
   // closest template view.
+  /** @type {Record<string, ReactiveVar<Binding>>} */
   this._scopeBindings = {};
 
   this.renderCount = 0;
@@ -531,6 +540,12 @@ Blaze._isContentEqual = function (a, b) {
  */
 Blaze.currentView = null;
 
+/**
+ * @template T
+ * @param {Blaze.View} view
+ * @param {() => T} func
+ * @returns {T}
+ */
 Blaze._withCurrentView = function (view, func) {
   var oldView = Blaze.currentView;
   try {
diff --git a/packages/observe-sequence/.versions b/packages/observe-sequence/.versions
index 708081f5c..da95679ae 100644
--- a/packages/observe-sequence/.versions
+++ b/packages/observe-sequence/.versions
@@ -1,49 +1,49 @@
-allow-deny@1.1.0
-babel-compiler@7.6.1
-babel-runtime@1.5.0
+allow-deny@1.1.1
+babel-compiler@7.10.4
+babel-runtime@1.5.1
 base64@1.0.12
 binary-heap@1.0.11
 boilerplate-generator@1.7.1
-callback-hook@1.3.0
-check@1.3.1
-ddp@1.4.0
-ddp-client@2.4.1
+callback-hook@1.5.1
+check@1.3.2
+ddp@1.4.1
+ddp-client@2.6.1
 ddp-common@1.4.0
-ddp-server@2.3.3
-diff-sequence@1.1.1
-dynamic-import@0.6.0
-ecmascript@0.15.1
-ecmascript-runtime@0.7.0
-ecmascript-runtime-client@0.11.1
-ecmascript-runtime-server@0.10.1
-ejson@1.1.1
-fetch@0.1.1
-geojson-utils@1.0.10
+ddp-server@2.6.1
+diff-sequence@1.1.2
+dynamic-import@0.7.3
+ecmascript@0.16.7
+ecmascript-runtime@0.8.1
+ecmascript-runtime-client@0.12.1
+ecmascript-runtime-server@0.11.0
+ejson@1.1.3
+fetch@0.1.3
+geojson-utils@1.0.11
 id-map@1.1.1
 inter-process-messaging@0.1.1
-local-test:observe-sequence@1.0.19
-logging@1.2.0
-meteor@1.9.3
-minimongo@1.6.2
-modern-browsers@0.1.5
-modules@0.16.0
-modules-runtime@0.12.0
-mongo@1.11.1
-mongo-decimal@0.1.2
+local-test:observe-sequence@1.0.21
+logging@1.3.2
+meteor@1.11.2
+minimongo@1.9.3
+modern-browsers@0.1.9
+modules@0.19.0
+modules-runtime@0.13.1
+mongo@1.16.6
+mongo-decimal@0.1.3
 mongo-dev-server@1.1.0
 mongo-id@1.0.8
-npm-mongo@3.9.0
-observe-sequence@1.0.19
+npm-mongo@4.16.0
+observe-sequence@1.0.21
 ordered-dict@1.1.0
-promise@0.11.2
-random@1.2.0
-react-fast-refresh@0.1.1
+promise@0.12.2
+random@1.2.1
+react-fast-refresh@0.2.7
 reload@1.3.1
 retry@1.1.0
-routepolicy@1.1.0
-socket-stream-client@0.3.3
-tinytest@1.1.0
-tracker@1.2.0
-underscore@1.0.10
-webapp@1.10.1
-webapp-hashing@1.1.0
+routepolicy@1.1.1
+socket-stream-client@0.5.1
+tinytest@1.2.2
+tracker@1.3.2
+underscore@1.0.13
+webapp@1.13.5
+webapp-hashing@1.1.1
diff --git a/packages/observe-sequence/package.js b/packages/observe-sequence/package.js
index c9756dec6..bff628d0f 100644
--- a/packages/observe-sequence/package.js
+++ b/packages/observe-sequence/package.js
@@ -1,10 +1,10 @@
 Package.describe({
   summary: "Observe changes to various sequence types such as arrays, cursors and objects",
-  version: "1.0.20"
+  version: "1.0.21"
 });
 
 Package.onUse(function (api) {
-  api.use('tracker@1.2.0');
+  api.use('tracker@1.3.0');
   api.use('mongo-id@1.0.8');  // for idStringify
   api.use('diff-sequence@1.1.1');
   api.use('random@1.2.0');
diff --git a/packages/spacebars-tests/.versions b/packages/spacebars-tests/.versions
index b755ea9f3..b983167d0 100644
--- a/packages/spacebars-tests/.versions
+++ b/packages/spacebars-tests/.versions
@@ -1,23 +1,23 @@
 allow-deny@1.1.1
-babel-compiler@7.10.3
+babel-compiler@7.10.4
 babel-runtime@1.5.1
 base64@1.0.12
 binary-heap@1.0.11
-blaze@2.5.0
+blaze@2.7.0
 blaze-tools@1.1.0
 boilerplate-generator@1.7.1
 caching-compiler@1.2.2
 caching-html-compiler@1.2.0
-callback-hook@1.5.0
+callback-hook@1.5.1
 check@1.3.2
 ddp@1.4.1
 ddp-client@2.6.1
 ddp-common@1.4.0
-ddp-server@2.6.0
+ddp-server@2.6.1
 diff-sequence@1.1.2
-dynamic-import@0.7.2
-ecmascript@0.16.6
-ecmascript-runtime@0.8.0
+dynamic-import@0.7.3
+ecmascript@0.16.7
+ecmascript-runtime@0.8.1
 ecmascript-runtime-client@0.12.1
 ecmascript-runtime-server@0.11.0
 ejson@1.1.3
@@ -25,45 +25,45 @@ es5-shim@4.8.0
 fetch@0.1.3
 geojson-utils@1.0.11
 html-tools@1.1.0
-htmljs@1.1.0
+htmljs@1.1.1
 id-map@1.1.1
 inter-process-messaging@0.1.1
 jquery@1.11.10
-local-test:spacebars-tests@1.3.2
+local-test:spacebars-tests@1.3.3
 logging@1.3.2
 markdown@1.0.14
-meteor@1.11.1
-minimongo@1.9.2
+meteor@1.11.2
+minimongo@1.9.3
 modern-browsers@0.1.9
 modules@0.19.0
 modules-runtime@0.13.1
-mongo@1.16.5
+mongo@1.16.6
 mongo-decimal@0.1.3
 mongo-dev-server@1.1.0
 mongo-id@1.0.8
-npm-mongo@4.14.0
+npm-mongo@4.16.0
 observe-sequence@1.0.16
 ordered-dict@1.1.0
 promise@0.12.2
 random@1.2.1
-react-fast-refresh@0.2.6
+react-fast-refresh@0.2.7
 reactive-dict@1.3.1
 reactive-var@1.0.12
 reload@1.3.1
 retry@1.1.0
 routepolicy@1.1.1
 session@1.2.1
-socket-stream-client@0.5.0
-spacebars@1.2.0
+socket-stream-client@0.5.1
+spacebars@1.4.0
 spacebars-compiler@1.2.0
-spacebars-tests@1.3.2
+spacebars-tests@1.3.3
 templating@1.4.1
 templating-compiler@1.4.1
 templating-runtime@1.5.0
 templating-tools@1.2.0
 test-helpers@1.3.1
 tinytest@1.2.2
-tracker@1.3.1
-underscore@1.0.12
-webapp@1.13.4
+tracker@1.3.2
+underscore@1.0.13
+webapp@1.13.5
 webapp-hashing@1.1.1
diff --git a/packages/spacebars-tests/async_tests.html b/packages/spacebars-tests/async_tests.html
new file mode 100644
index 000000000..f590218df
--- /dev/null
+++ b/packages/spacebars-tests/async_tests.html
@@ -0,0 +1,69 @@
+<template name="spacebars_async_tests_access">
+  {{#let a=x.y}}{{a}}{{/let}}
+</template>
+
+<template name="spacebars_async_tests_direct">
+  {{#let a=x}}{{a}}{{/let}}
+</template>
+
+<template name="spacebars_async_tests_missing1">
+  {{@pending 'b'}}
+</template>
+
+<template name="spacebars_async_tests_missing2">
+  {{#let a=1}}{{@pending 'b'}}{{/let}}
+</template>
+
+<template name="spacebars_async_tests_state1">
+  {{#let a=x}}
+    {{#if @pending}}1{{/if}}
+    {{#if @rejected}}2{{/if}}
+    {{#if @resolved}}3{{/if}}
+
+    {{#if @pending 'a'}}a1{{/if}}
+    {{#if @rejected 'a'}}a2{{/if}}
+    {{#if @resolved 'a'}}a3{{/if}}
+  {{/let}}
+</template>
+
+<template name="spacebars_async_tests_state2flat">
+  {{#let a=x b=y}}
+    {{#if @pending}}1{{/if}}
+    {{#if @rejected}}2{{/if}}
+    {{#if @resolved}}3{{/if}}
+
+    {{#if @pending 'a'}}a1{{/if}}
+    {{#if @rejected 'a'}}a2{{/if}}
+    {{#if @resolved 'a'}}a3{{/if}}
+
+    {{#if @pending 'b'}}b1{{/if}}
+    {{#if @rejected 'b'}}b2{{/if}}
+    {{#if @resolved 'b'}}b3{{/if}}
+
+    {{#if @pending 'a' 'b'}}ab1{{/if}}
+    {{#if @rejected 'a' 'b'}}ab2{{/if}}
+    {{#if @resolved 'a' 'b'}}ab3{{/if}}
+  {{/let}}
+</template>
+
+<template name="spacebars_async_tests_state2nested">
+  {{#let a=x}}
+    {{#let b=y}}
+      {{#if @pending}}1{{/if}}
+      {{#if @rejected}}2{{/if}}
+      {{#if @resolved}}3{{/if}}
+
+      {{#if @pending 'a'}}a1{{/if}}
+      {{#if @rejected 'a'}}a2{{/if}}
+      {{#if @resolved 'a'}}a3{{/if}}
+
+      {{#if @pending 'b'}}b1{{/if}}
+      {{#if @rejected 'b'}}b2{{/if}}
+      {{#if @resolved 'b'}}b3{{/if}}
+
+      {{#if @pending 'a' 'b'}}ab1{{/if}}
+      {{#if @rejected 'a' 'b'}}ab2{{/if}}
+      {{#if @resolved 'a' 'b'}}ab3{{/if}}
+    {{/let}}
+  {{/let}}
+</template>
diff --git a/packages/spacebars-tests/async_tests.js b/packages/spacebars-tests/async_tests.js
new file mode 100644
index 000000000..84f2b5519
--- /dev/null
+++ b/packages/spacebars-tests/async_tests.js
@@ -0,0 +1,82 @@
+function asyncTest(templateName, testName, fn) {
+  Tinytest.addAsync(`spacebars-tests - async - ${templateName} ${testName}`, test => {
+    const template = Blaze.Template[`spacebars_async_tests_${templateName}`];
+    const templateCopy = new Blaze.Template(template.viewName, template.renderFunction);
+    return fn(test, templateCopy, () => {
+      const div = renderToDiv(templateCopy);
+      return () => canonicalizeHtml(div.innerHTML);
+    });
+  });
+}
+
+function asyncSuite(templateName, cases) {
+  for (const [testName, helpers, before, after] of cases) {
+    asyncTest(templateName, testName, async (test, template, render) => {
+      template.helpers(helpers);
+      const readHTML = render();
+      test.equal(readHTML(), before);
+      await new Promise(Tracker.afterFlush);
+      test.equal(readHTML(), after);
+    });
+  }
+}
+
+asyncSuite('access', [
+  ['getter', { x: { y: async () => 'foo' } }, '', 'foo'],
+  ['thenable', { x: { y: { then: resolve => { Promise.resolve().then(() => resolve('foo')) } } } }, '', 'foo'],
+  ['value', { x: { y: Promise.resolve('foo') } }, '', 'foo'],
+]);
+
+asyncSuite('direct', [
+  ['getter', { x: async () => 'foo' }, '', 'foo'],
+  ['thenable', { x: { then: resolve => { Promise.resolve().then(() => resolve('foo')) } } }, '', 'foo'],
+  ['value', { x: Promise.resolve('foo') }, '', 'foo'],
+]);
+
+asyncTest('missing1', 'outer', async (test, template, render) => {
+  Blaze._throwNextException = true;
+  test.throws(render, 'Binding for "b" was not found.');
+});
+
+asyncTest('missing2', 'inner', async (test, template, render) => {
+  Blaze._throwNextException = true;
+  test.throws(render, 'Binding for "b" was not found.');
+});
+
+// In the following tests pending=1, rejected=2, resolved=3.
+const pending = new Promise(() => {});
+const rejected = Promise.reject();
+const resolved = Promise.resolve();
+
+// Ignore unhandled rejection error.
+rejected.catch(() => {});
+
+asyncSuite('state1', [
+  ['pending', { x: pending }, '1 a1', '1 a1'],
+  ['rejected', { x: rejected }, '1 a1', '2 a2'],
+  ['resolved', { x: resolved }, '1 a1', '3 a3'],
+]);
+
+asyncSuite('state2flat', [
+  ['pending pending', { x: pending, y: pending }, '1 a1 b1 ab1', '1 a1 b1 ab1'],
+  ['pending rejected', { x: pending, y: rejected }, '1 a1 b1 ab1', '1 2 a1 b2 ab1 ab2'],
+  ['pending resolved', { x: pending, y: resolved }, '1 a1 b1 ab1', '1 3 a1 b3 ab1 ab3'],
+  ['rejected pending', { x: rejected, y: pending }, '1 a1 b1 ab1', '1 2 a2 b1 ab1 ab2'],
+  ['rejected rejected', { x: rejected, y: rejected }, '1 a1 b1 ab1', '2 a2 b2 ab2'],
+  ['rejected resolved', { x: rejected, y: resolved }, '1 a1 b1 ab1', '2 3 a2 b3 ab2 ab3'],
+  ['resolved pending', { x: resolved, y: pending }, '1 a1 b1 ab1', '1 3 a3 b1 ab1 ab3'],
+  ['resolved rejected', { x: resolved, y: rejected }, '1 a1 b1 ab1', '2 3 a3 b2 ab2 ab3'],
+  ['resolved resolved', { x: resolved, y: resolved }, '1 a1 b1 ab1', '3 a3 b3 ab3'],
+]);
+
+asyncSuite('state2nested', [
+  ['pending pending', { x: pending, y: pending }, '1 a1 b1 ab1', '1 a1 b1 ab1'],
+  ['pending rejected', { x: pending, y: rejected }, '1 a1 b1 ab1', '2 a1 b2 ab1 ab2'],
+  ['pending resolved', { x: pending, y: resolved }, '1 a1 b1 ab1', '3 a1 b3 ab1 ab3'],
+  ['rejected pending', { x: rejected, y: pending }, '1 a1 b1 ab1', '1 a2 b1 ab1 ab2'],
+  ['rejected rejected', { x: rejected, y: rejected }, '1 a1 b1 ab1', '2 a2 b2 ab2'],
+  ['rejected resolved', { x: rejected, y: resolved }, '1 a1 b1 ab1', '3 a2 b3 ab2 ab3'],
+  ['resolved pending', { x: resolved, y: pending }, '1 a1 b1 ab1', '1 a3 b1 ab1 ab3'],
+  ['resolved rejected', { x: resolved, y: rejected }, '1 a1 b1 ab1', '2 a3 b2 ab2 ab3'],
+  ['resolved resolved', { x: resolved, y: resolved }, '1 a1 b1 ab1', '3 a3 b3 ab3'],
+]);
diff --git a/packages/spacebars-tests/package.js b/packages/spacebars-tests/package.js
index 856bd2b26..dd6e17906 100644
--- a/packages/spacebars-tests/package.js
+++ b/packages/spacebars-tests/package.js
@@ -1,7 +1,7 @@
 Package.describe({
   name: 'spacebars-tests',
   summary: "Additional tests for Spacebars",
-  version: '1.3.2',
+  version: '1.3.3',
   git: 'https://github.com/meteor/blaze.git'
 });
 
@@ -16,19 +16,21 @@ Package.onTest(function (api) {
     'reactive-var@1.0.11',
     'markdown@1.0.14 || 2.0.0',
     'minimongo@1.6.2',
-    'tracker@1.2.0',
+    'tracker@1.3.0',
     'mongo@1.11.1',
     'random@1.2.0',
     'session@1.2.0'
   ]);
 
   api.use([
-    'spacebars@1.2.0',
-    'blaze@2.5.0'
+    'spacebars@1.4.0',
+    'blaze@2.7.0'
   ]);
   api.use('templating@1.4.1', 'client');
 
   api.addFiles([
+    'async_tests.html',
+    'async_tests.js',
     'template_tests.html',
     'template_tests.js',
     'templating_tests.html',
diff --git a/packages/spacebars/.versions b/packages/spacebars/.versions
index 879ae5321..3c5e66287 100644
--- a/packages/spacebars/.versions
+++ b/packages/spacebars/.versions
@@ -1,53 +1,53 @@
-allow-deny@1.1.0
-babel-compiler@7.6.1
-babel-runtime@1.5.0
+allow-deny@1.1.1
+babel-compiler@7.10.4
+babel-runtime@1.5.1
 base64@1.0.12
 binary-heap@1.0.11
-blaze@2.5.0
+blaze@2.7.0
 boilerplate-generator@1.7.1
-callback-hook@1.3.0
-check@1.3.1
-ddp@1.4.0
-ddp-client@2.4.0
+callback-hook@1.5.1
+check@1.3.2
+ddp@1.4.1
+ddp-client@2.6.1
 ddp-common@1.4.0
-ddp-server@2.3.2
-diff-sequence@1.1.1
-dynamic-import@0.6.0
-ecmascript@0.15.1
-ecmascript-runtime@0.7.0
-ecmascript-runtime-client@0.11.0
-ecmascript-runtime-server@0.10.0
-ejson@1.1.1
-fetch@0.1.1
-geojson-utils@1.0.10
-htmljs@1.1.0
-id-map@1.1.0
+ddp-server@2.6.1
+diff-sequence@1.1.2
+dynamic-import@0.7.3
+ecmascript@0.16.7
+ecmascript-runtime@0.8.1
+ecmascript-runtime-client@0.12.1
+ecmascript-runtime-server@0.11.0
+ejson@1.1.3
+fetch@0.1.3
+geojson-utils@1.0.11
+htmljs@1.1.1
+id-map@1.1.1
 inter-process-messaging@0.1.1
-local-test:spacebars@1.2.0
-logging@1.2.0
-meteor@1.9.3
-minimongo@1.6.2
-modern-browsers@0.1.5
-modules@0.16.0
-modules-runtime@0.12.0
-mongo@1.11.0
-mongo-decimal@0.1.2
+local-test:spacebars@1.4.0
+logging@1.3.2
+meteor@1.11.2
+minimongo@1.9.3
+modern-browsers@0.1.9
+modules@0.19.0
+modules-runtime@0.13.1
+mongo@1.16.6
+mongo-decimal@0.1.3
 mongo-dev-server@1.1.0
-mongo-id@1.0.7
-npm-mongo@3.9.0
+mongo-id@1.0.8
+npm-mongo@4.16.0
 observe-sequence@1.0.16
 ordered-dict@1.1.0
-promise@0.11.2
-random@1.2.0
-react-fast-refresh@0.1.0
-reactive-var@1.0.11
+promise@0.12.2
+random@1.2.1
+react-fast-refresh@0.2.7
+reactive-var@1.0.12
 reload@1.3.1
 retry@1.1.0
-routepolicy@1.1.0
-socket-stream-client@0.3.1
-spacebars@1.2.0
-tinytest@1.1.0
-tracker@1.2.0
-underscore@1.0.10
-webapp@1.10.1
-webapp-hashing@1.1.0
+routepolicy@1.1.1
+socket-stream-client@0.5.1
+spacebars@1.4.0
+tinytest@1.2.2
+tracker@1.3.2
+underscore@1.0.13
+webapp@1.13.5
+webapp-hashing@1.1.1
diff --git a/packages/spacebars/package.js b/packages/spacebars/package.js
index a9ba4b0e1..02b7c9066 100644
--- a/packages/spacebars/package.js
+++ b/packages/spacebars/package.js
@@ -1,7 +1,7 @@
 Package.describe({
   name: 'spacebars',
   summary: "Handlebars-like template language for Meteor",
-  version: '1.3.0',
+  version: '1.4.0',
   git: 'https://github.com/meteor/blaze.git'
 });
 
@@ -15,12 +15,12 @@ Package.describe({
 
 Package.onUse(function (api) {
   api.use('observe-sequence@1.0.16');
-  api.use('tracker@1.2.0');
+  api.use('tracker@1.3.0');
 
   api.export('Spacebars');
 
   api.use('htmljs@1.1.1');
-  api.use('blaze@2.5.0');
+  api.use('blaze@2.7.0'); 
 
   api.addFiles([
     'spacebars-runtime.js'
diff --git a/packages/spacebars/spacebars-runtime.js b/packages/spacebars/spacebars-runtime.js
index f02849c8d..5cbd49a61 100644
--- a/packages/spacebars/spacebars-runtime.js
+++ b/packages/spacebars/spacebars-runtime.js
@@ -117,9 +117,34 @@ Spacebars.makeRaw = function (value) {
     return HTML.Raw(value);
 };
 
+/***
+ * @sumamry Executes `fn` with the resolved value of `promise` while preserving
+ * the context, i.e., `Blaze.currentView` and `Tracker.currentComputation`.
+ * @template T
+ * @template U
+ * @param {Promise<T>} promise
+ * @param {(x: T) => U} fn
+ * @returns {Promise<U>}
+ */
+function _thenWithContext(promise, fn) {
+  const computation = Tracker.currentComputation;
+  const view = Blaze.currentView;
+  return promise.then(value =>
+    Blaze._withCurrentView(view, () =>
+      Tracker.withComputation(computation, () =>
+        fn(value)
+      )
+    )
+  );
+}
+
 // If `value` is a function, evaluate its `args` (by calling them, if they
 // are functions), and then call it on them. Otherwise, return `value`.
 //
+// If any of the arguments is a `Promise` or a function returning one, then the
+// `value` will be called once all of the arguments resolve. If any of them
+// rejects, so will the call.
+//
 // If `value` is not a function and is not null, then this method will assert
 // that there are no args. We check for null before asserting because a user
 // may write a template like {{user.fullNameWithPrefix 'Mr.'}}, where the
@@ -128,9 +153,15 @@ Spacebars.call = function (value/*, args*/) {
   if (typeof value === 'function') {
     // Evaluate arguments by calling them if they are functions.
     var newArgs = [];
+    let anyIsPromise = false;
     for (var i = 1; i < arguments.length; i++) {
       var arg = arguments[i];
       newArgs[i-1] = (typeof arg === 'function' ? arg() : arg);
+      anyIsPromise = anyIsPromise || newArgs[i-1] instanceof Promise;
+    }
+
+    if (anyIsPromise) {
+      return _thenWithContext(Promise.all(newArgs), newArgs => value.apply(null, newArgs));
     }
 
     return value.apply(null, newArgs);
@@ -170,6 +201,10 @@ Spacebars.SafeString.prototype = Handlebars.SafeString.prototype;
 // a wrapped version of `baz` that always uses `foo.bar` as
 // `this`).
 //
+// If any of the intermediate values is a `Promise`, the result will be one as
+// well, i.e., accessing a field of a `Promise` results in a `Promise` of the
+// accessed field. Rejections are passed-through.
+//
 // In `Spacebars.dot(foo, "bar")`, `foo` is assumed to be either
 // a non-function value or a "fully-bound" function wrapping a value,
 // where fully-bound means it takes no arguments and ignores `this`.
@@ -200,6 +235,9 @@ Spacebars.dot = function (value, id1/*, id2, ...*/) {
   if (! value)
     return value; // falsy, don't index, pass through
 
+  if (value && typeof value.then === 'function')
+    return _thenWithContext(value, value => Spacebars.dot(value, id1));
+
   var result = value[id1];
   if (typeof result !== 'function')
     return result;
diff --git a/packages/spacebars/spacebars_tests.js b/packages/spacebars/spacebars_tests.js
index 16207a260..9444ca2e5 100644
--- a/packages/spacebars/spacebars_tests.js
+++ b/packages/spacebars/spacebars_tests.js
@@ -57,3 +57,30 @@ Tinytest.add("spacebars - Spacebars.dot", function (test) {
     }, 'inc')(8), 9);
 
 });
+
+Tinytest.add("spacebars - async - Spacebars.call", async test => {
+  const add = (x, y) => x + y;
+  test.equal(await Spacebars.call(add, 1, Promise.resolve(2)), 3);
+  test.equal(await Spacebars.call(add, Promise.resolve(1), 2), 3);
+  test.equal(await Spacebars.call(add, { then: resolve => resolve(1) }, 2), 3);
+  test.equal(await Spacebars.call(add, Promise.resolve(1), Promise.resolve(2)), 3);
+  test.equal(await Spacebars.call(add, 1, async () => 2), 3);
+  test.equal(await Spacebars.call(add, async () => 1, 2), 3);
+  test.equal(await Spacebars.call(add, async () => 1, async () => 2), 3);
+  test.equal(await Spacebars.call(add, Promise.reject(1), 2).catch(x => x), 1);
+  test.equal(await Spacebars.call(add, 1, { then: (_, reject) => reject(2) }).catch(x => x), 2);
+  test.equal(await Spacebars.call(add, 1, Promise.reject(2)).catch(x => x), 2);
+  test.equal(await Spacebars.call(add, Promise.reject(1), Promise.reject(2)).catch(x => x), 1);
+});
+
+Tinytest.add("spacebars - async - Spacebars.dot", async test => {
+  test.equal(await Spacebars.dot(Promise.resolve(null), 'foo'), null);
+  test.equal(await Spacebars.dot(Promise.resolve({ foo: 1 }), 'foo'), 1);
+  test.equal(await Spacebars.dot(Promise.resolve({ foo: () => 1 }), 'foo'), 1);
+  test.equal(await Spacebars.dot(Promise.resolve({ foo: async () => 1 }), 'foo'), 1);
+  test.equal(await Spacebars.dot({ foo: { then: resolve => resolve(1) } }, 'foo'), 1);
+  test.equal(await Spacebars.dot({ foo: Promise.resolve(1) }, 'foo'), 1);
+  test.equal(await Spacebars.dot({ foo: async () => 1 }, 'foo'), 1);
+  test.equal(await Spacebars.dot(() => ({ foo: async () => 1 }), 'foo'), 1);
+  test.equal(await Spacebars.dot(async () => ({ foo: async () => 1 }), 'foo'), 1);
+});
diff --git a/packages/templating-runtime/.versions b/packages/templating-runtime/.versions
index d8cf6dfe2..8a5ab678b 100644
--- a/packages/templating-runtime/.versions
+++ b/packages/templating-runtime/.versions
@@ -1,5 +1,5 @@
 allow-deny@1.1.1
-babel-compiler@7.9.0
+babel-compiler@7.10.4
 babel-runtime@1.5.1
 base64@1.0.12
 binary-heap@1.0.11
@@ -8,55 +8,55 @@ blaze-tools@1.1.0
 boilerplate-generator@1.7.1
 caching-compiler@1.2.2
 caching-html-compiler@1.2.0
-callback-hook@1.4.0
-check@1.3.1
-ddp@1.4.0
-ddp-client@2.5.0
+callback-hook@1.5.1
+check@1.3.2
+ddp@1.4.1
+ddp-client@2.6.1
 ddp-common@1.4.0
-ddp-server@2.5.0
-diff-sequence@1.1.1
-dynamic-import@0.7.2
-ecmascript@0.16.2
-ecmascript-runtime@0.8.0
+ddp-server@2.6.1
+diff-sequence@1.1.2
+dynamic-import@0.7.3
+ecmascript@0.16.7
+ecmascript-runtime@0.8.1
 ecmascript-runtime-client@0.12.1
 ecmascript-runtime-server@0.11.0
-ejson@1.1.2
-fetch@0.1.1
-geojson-utils@1.0.10
+ejson@1.1.3
+fetch@0.1.3
+geojson-utils@1.0.11
 html-tools@1.1.0
 htmljs@1.1.1
 id-map@1.1.1
 inter-process-messaging@0.1.1
-local-test:templating-runtime@1.6.1
-logging@1.3.1
-meteor@1.10.0
-minimongo@1.8.0
-modern-browsers@0.1.8
-modules@0.18.0
-modules-runtime@0.13.0
-mongo@1.15.0
+local-test:templating-runtime@1.6.3
+logging@1.3.2
+meteor@1.11.2
+minimongo@1.9.3
+modern-browsers@0.1.9
+modules@0.19.0
+modules-runtime@0.13.1
+mongo@1.16.6
 mongo-decimal@0.1.3
 mongo-dev-server@1.1.0
 mongo-id@1.0.8
-npm-mongo@4.3.1
+npm-mongo@4.16.0
 observe-sequence@1.0.16
 ordered-dict@1.1.0
-promise@0.12.0
-random@1.2.0
-react-fast-refresh@0.2.3
-reactive-var@1.0.11
+promise@0.12.2
+random@1.2.1
+react-fast-refresh@0.2.7
+reactive-var@1.0.12
 reload@1.3.1
 retry@1.1.0
 routepolicy@1.1.1
-socket-stream-client@0.5.0
+socket-stream-client@0.5.1
 spacebars@1.3.0
 spacebars-compiler@1.2.0
 templating-compiler@1.4.1
-templating-runtime@1.6.1
+templating-runtime@1.6.3
 templating-tools@1.2.0
-test-helpers@1.3.0
-tinytest@1.2.1
-tracker@1.2.0
-underscore@1.0.10
-webapp@1.13.1
-webapp-hashing@1.1.0
+test-helpers@1.3.1
+tinytest@1.2.2
+tracker@1.3.2
+underscore@1.0.13
+webapp@1.13.5
+webapp-hashing@1.1.1
diff --git a/packages/templating-runtime/package.js b/packages/templating-runtime/package.js
index 70197594b..5dde3edb1 100644
--- a/packages/templating-runtime/package.js
+++ b/packages/templating-runtime/package.js
@@ -1,7 +1,7 @@
 Package.describe({
   name: 'templating-runtime',
   summary: "Runtime for compiled .html files",
-  version: '1.6.1',
+  version: '1.6.3',
   git: 'https://github.com/meteor/blaze.git',
   documentation: null
 });
@@ -49,7 +49,7 @@ Package.onTest(function (api) {
     'tinytest@1.1.0',
     'test-helpers@1.2.0',
     'reactive-var@1.0.11',
-    'tracker@1.2.0'
+    'tracker@1.3.0'
   ]);
 
   api.use([
diff --git a/site/source/api/spacebars.md b/site/source/api/spacebars.md
index c17020a24..e73455884 100644
--- a/site/source/api/spacebars.md
+++ b/site/source/api/spacebars.md
@@ -101,6 +101,11 @@ trying to index into a non-object or an undefined value.
 In addition, Spacebars will call functions for you, so `{% raw %}{{foo.bar}}{% endraw %}` may be
 taken to mean `foo().bar`, `foo.bar()`, or `foo().bar()` as appropriate.
 
+Similarly, if the accessed object is wrapped in a `Promise`, Spacebars will
+defer the path evaluation in a `Promise` as well. That is,
+`{% raw %}{{foo.bar}}{% endraw %}` will evaluate to `foo().then(x => x.bar)`.
+Both pending and rejected states will result in `undefined`.
+
 ## Helper Arguments
 
 An argument to a helper can be any path or identifier, or a string, boolean, or
@@ -122,6 +127,11 @@ frob(a, b, c, Spacebars.kw({verily: true}))
 
 The helper's implementation can access the current data context as `this`.
 
+If any of the arguments is a `Promise`, Spacebars will defer the call as long as
+all of the arguments will resolve. That is, `{% raw %}{{foo x y z}}{% endraw %}`
+will evaluate to `Promise.all([x, y, z]).then(args => foo(...args))`. Both
+pending and rejected states will result in `undefined`.
+
 ## Inclusion and Block Arguments
 
 Inclusion tags (`{% raw %}{{> foo}}{% endraw %}`) and block tags (`{% raw %}{{#foo}}{% endraw %}`) take a single
@@ -457,6 +467,86 @@ Variables introduced this way take precedence over names of templates, global
 helpers, fields of the current data context and previously introduced
 variables with the same name.
 
+Additionally, `#let` is capable of unwrapping `Promise` objects. That is, if
+any of the bindings is to one, the bound value won't be a `Promise`, but the
+resolved value instead. Both pending and rejected states will result in
+`undefined`.
+
+### Async states
+
+> This functionality is considered experimental and a subject to change. For
+> details please refer to [#412](https://github.com/meteor/blaze/pull/412).
+
+There are three global helpers used to query the state of the bound `Promise`s:
+* `@pending`, which checks whether any of the given bindings is still pending.
+* `@rejected`, which checks whether any of the given bindings has rejected.
+* `@resolved`, which checks whether any of the given bindings has resolved.
+
+```html
+{{#let name=getNameAsynchronously}}
+  {{#if @pending 'name'}}
+    We are fetching your name...
+  {{/if}}
+  {{#if @rejected 'name'}}
+    Sorry, an error occured!
+  {{/if}}
+  {{#if @resolved 'name'}}
+    Hi, {{name}}!
+  {{/if}}
+{{/let}}
+```
+
+All of them accept a list of names to check. Passing no arguments is the same as
+passing all bindings from the inner-most `#let`.
+
+```html
+{{#let name=getNameAsynchronously}}
+  {{#let color=getColorAsynchronously}}
+    {{#if @pending}}
+      We are fetching your color...
+    {{/if}}
+    {{#if @rejected 'name'}}
+      Sorry, an error occurred while fetching your name!
+    {{/if}}
+    {{#if @resolved 'color' 'name'}}
+      {{name}} gets a {{color}} card!
+    {{/if}}
+  {{/let}}
+{{/let}}
+```
+
+### Async synchronization
+
+> This functionality is considered experimental and a subject to change. For
+> details please refer to [#412](https://github.com/meteor/blaze/pull/412).
+
+The bindings are **not** synchronized. That means, bindings store that _latest
+resolved value_, not _value of the latest `Promise`_. If the resolution time
+varies (e.g., involves network), it may result in desynchronized UI. In the
+below example, the rendered text is **not** guaranteed to be the result of the
+latest `getName` execution.
+
+```html
+<template name="example">
+  {{#let name=getName}}
+    Hi, {{name}}!
+  {{/let}}
+</template>
+```
+
+```js
+Template.example.helpers({
+  async getName() {
+    const userId = Meteor.userId(); // Reactive data source.
+    const profile = await fetch(/* ... */); // Async operation.
+    return profile.name;
+  },
+});
+```
+
+If a well-defined order of resolutions is required, consider using an external
+synchronization mechanism, e.g., a queue of pending async operations.
+
 ## Custom Block Helpers
 
 To define your own block helper, simply declare a template, and then invoke it
diff --git a/test-app/.meteor/packages b/test-app/.meteor/packages
index 668d61eaa..ac86d42c6 100644
--- a/test-app/.meteor/packages
+++ b/test-app/.meteor/packages
@@ -6,14 +6,14 @@
 
 meteor-base@1.5.1             # Packages every Meteor app needs to have
 mobile-experience@1.1.0       # Packages for a great mobile UX
-mongo@1.14.6                   # The database Meteor supports right now
+mongo@1.16.6                   # The database Meteor supports right now
 static-html@1.3.2             # Define static page content in .html files
-reactive-var@1.0.11            # Reactive variable for tracker
-tracker@1.2.0                 # Meteor's client-side reactive programming library
+reactive-var@1.0.12            # Reactive variable for tracker
+tracker@1.3.2                 # Meteor's client-side reactive programming library
 
-standard-minifier-css@1.8.1   # CSS minifier run for production mode
-standard-minifier-js@2.8.0    # JS minifier run for production mode
+standard-minifier-css@1.9.2   # CSS minifier run for production mode
+standard-minifier-js@2.8.1    # JS minifier run for production mode
 es5-shim@4.8.0                # ECMAScript 5 compatibility for older browsers
-ecmascript@0.16.2              # Enable ECMAScript2015+ syntax in app code
-typescript@4.5.4              # Enable TypeScript syntax in .ts and .tsx modules
+ecmascript@0.16.7              # Enable ECMAScript2015+ syntax in app code
+typescript@4.9.4              # Enable TypeScript syntax in .ts and .tsx modules
 shell-server@0.5.0            # Server-side component of the `meteor shell` command
diff --git a/test-app/.meteor/release b/test-app/.meteor/release
index 8e3f1708a..e8cfc7ec4 100644
--- a/test-app/.meteor/release
+++ b/test-app/.meteor/release
@@ -1 +1 @@
-METEOR@2.7.1
+METEOR@2.12
diff --git a/test-app/.meteor/versions b/test-app/.meteor/versions
index 0876ac00b..8b5eb38ce 100644
--- a/test-app/.meteor/versions
+++ b/test-app/.meteor/versions
@@ -1,68 +1,68 @@
 allow-deny@1.1.1
 autoupdate@1.8.0
-babel-compiler@7.9.0
-babel-runtime@1.5.0
+babel-compiler@7.10.4
+babel-runtime@1.5.1
 base64@1.0.12
 binary-heap@1.0.11
-blaze-tools@1.1.2
+blaze-tools@1.1.3
 boilerplate-generator@1.7.1
 caching-compiler@1.2.2
 caching-html-compiler@1.2.1
-callback-hook@1.4.0
-check@1.3.1
-ddp@1.4.0
-ddp-client@2.5.0
+callback-hook@1.5.1
+check@1.3.2
+ddp@1.4.1
+ddp-client@2.6.1
 ddp-common@1.4.0
-ddp-server@2.5.0
-diff-sequence@1.1.1
-dynamic-import@0.7.2
-ecmascript@0.16.2
-ecmascript-runtime@0.8.0
+ddp-server@2.6.1
+diff-sequence@1.1.2
+dynamic-import@0.7.3
+ecmascript@0.16.7
+ecmascript-runtime@0.8.1
 ecmascript-runtime-client@0.12.1
 ecmascript-runtime-server@0.11.0
-ejson@1.1.2
+ejson@1.1.3
 es5-shim@4.8.0
-fetch@0.1.1
-geojson-utils@1.0.10
+fetch@0.1.3
+geojson-utils@1.0.11
 hot-code-push@1.0.4
-html-tools@1.1.2
+html-tools@1.1.3
 htmljs@1.1.1
 id-map@1.1.1
 inter-process-messaging@0.1.1
 launch-screen@1.3.0
-logging@1.3.1
-meteor@1.10.0
+logging@1.3.2
+meteor@1.11.2
 meteor-base@1.5.1
-minifier-css@1.6.0
-minifier-js@2.7.4
-minimongo@1.8.0
+minifier-css@1.6.4
+minifier-js@2.7.5
+minimongo@1.9.3
 mobile-experience@1.1.0
 mobile-status-bar@1.1.0
-modern-browsers@0.1.7
-modules@0.18.0
-modules-runtime@0.13.0
-mongo@1.14.6
-mongo-decimal@0.1.2
+modern-browsers@0.1.9
+modules@0.19.0
+modules-runtime@0.13.1
+mongo@1.16.6
+mongo-decimal@0.1.3
 mongo-dev-server@1.1.0
 mongo-id@1.0.8
-npm-mongo@4.3.1
+npm-mongo@4.16.0
 ordered-dict@1.1.0
-promise@0.12.0
-random@1.2.0
-react-fast-refresh@0.2.3
-reactive-var@1.0.11
+promise@0.12.2
+random@1.2.1
+react-fast-refresh@0.2.7
+reactive-var@1.0.12
 reload@1.3.1
 retry@1.1.0
 routepolicy@1.1.1
 shell-server@0.5.0
-socket-stream-client@0.4.0
-spacebars-compiler@1.3.0
-standard-minifier-css@1.8.1
-standard-minifier-js@2.8.0
+socket-stream-client@0.5.1
+spacebars-compiler@1.3.1
+standard-minifier-css@1.9.2
+standard-minifier-js@2.8.1
 static-html@1.3.2
-templating-tools@1.2.1
-tracker@1.2.0
-typescript@4.5.4
-underscore@1.0.10
-webapp@1.13.1
-webapp-hashing@1.1.0
+templating-tools@1.2.2
+tracker@1.3.2
+typescript@4.9.4
+underscore@1.0.13
+webapp@1.13.5
+webapp-hashing@1.1.1