diff --git a/HISTORY.md b/HISTORY.md
index 6ca77802..b5e685e9 100644
--- a/HISTORY.md
+++ b/HISTORY.md
@@ -1,3 +1,34 @@
+## 1.5.0 (January 14, 2016)
+
+### Parser
+
+- attach minus to number
+
+### Compressor
+
+- split code base into small modules and related refactoring
+- introduce internal AST format for compressor (`gonzales`→`internal` and `internal`→`gonzales` convertors, walkers, translator)
+- various optimizations: no snapshots, using caches and indexes
+- sort selectors, merge selectors in alphabet order
+- compute selector's specificity
+- better ruleset restructuring, improve compression of partially equal blocks
+- better ruleset merge – not only closest but also disjoined by other rulesets when safe
+- join `@media` with same query
+- `outputAst` – new option to specify output AST format (`gonzales` by default for backward compatibility)
+- remove quotes surrounding attribute values in attribute selectors when possible (issue #73)
+- replace `from`→`0%` and `100%`→`to` at `@keyframes` (#205)
+- prevent partial merge of rulesets at `@keyframes` (#80, #197)
+- fix issue with wrong space removals (#258)
+
+### API
+
+- walker for `gonzales` AST was implemented
+
+### CLI
+
+- new option `--stat` (output stat in `stderr`)
+- new optional parameter `level` for `--debug` option
+
 ## 1.4.4 (December 10, 2015)
 
 - prevent removal of spaces after braces that before identifier that breaking at-rules expressions (#258)
diff --git a/package.json b/package.json
index e1319acc..19e65807 100644
--- a/package.json
+++ b/package.json
@@ -1,9 +1,16 @@
 {
   "name": "csso",
   "description": "CSSO — CSS optimizer",
-  "version": "1.4.4",
+  "version": "1.5.0",
   "homepage": "https://github.com/css/csso",
   "author": "Sergey Kryzhanovsky <skryzhanovsky@ya.ru> (https://github.com/afelix)",
+  "maintainers": [
+    {
+      "name": "Roman Dvornov",
+      "email": "rdvornov@gmail.com",
+      "github-username": "lahmatiy"
+    }
+  ],
   "license": "MIT",
   "repository": "css/csso",
   "bugs": {