diff --git a/CHANGELOG.md b/CHANGELOG.md
index ba2bb05..693e022 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,11 @@
+<a name="v1.4.0"></a>
+## v1.4.0 (2016-02-04)
+
+
+#### Features
+
+* **responsive-property:** add an `$important` flag ([8fa7892c](http://github.com/asimov/asimov-core/commit/8fa7892cd7d640ab20563af0790262263d31eb70))
+
 <a name="v1.3.4"></a>
 ### v1.3.4 (2015-11-25)
 
diff --git a/bower.json b/bower.json
index 2570851..d0353ca 100644
--- a/bower.json
+++ b/bower.json
@@ -1,6 +1,6 @@
 {
   "name": "asimov-core",
-  "version": "1.3.4",
+  "version": "1.4.0",
   "homepage": "https://github.com/asimov/asimov-core",
   "authors": [
     "xzyfer <xzyfer@gmail.com>"