diff --git a/HISTORY.md b/HISTORY.md
index 082a952b..e4ab285c 100644
--- a/HISTORY.md
+++ b/HISTORY.md
@@ -1,3 +1,7 @@
+## 3.0.1 (March 14, 2017)
+
+- Fixed declaration merging when declaration contains an `!important`
+
 ## 3.0.0 (March 13, 2017)
 
 - Migrated to [CSSTree](https://github.com/csstree/csstree) as AST backend and exposed its API behind `syntax` property
diff --git a/package.json b/package.json
index b4798b72..9adc761a 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "csso",
-  "version": "3.0.0",
+  "version": "3.0.1",
   "description": "CSSO (CSS Optimizer) is a CSS minifier with structural optimisations",
   "keywords": [
     "css",