diff --git a/HISTORY.md b/HISTORY.md
index 40252839..6ca77802 100644
--- a/HISTORY.md
+++ b/HISTORY.md
@@ -1,3 +1,7 @@
+## 1.4.4 (December 10, 2015)
+
+- prevent removal of spaces after braces that before identifier that breaking at-rules expressions (#258)
+
 ## 1.4.3 (December 4, 2015)
 
 - fix unicode-range parsing that cause to wrong function detection (#250)
diff --git a/package.json b/package.json
index 28470255..098af1c3 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "csso",
   "description": "CSSO — CSS optimizer",
-  "version": "1.4.3",
+  "version": "1.4.4",
   "homepage": "https://github.com/css/csso",
   "author": "Sergey Kryzhanovsky <skryzhanovsky@ya.ru> (https://github.com/afelix)",
   "license": "MIT",
diff --git a/test/fixture/compress/atrules/supports-1.css b/test/fixture/compress/atrules/supports-1.css
index 2a3fd3e6..14e9c4ec 100644
--- a/test/fixture/compress/atrules/supports-1.css
+++ b/test/fixture/compress/atrules/supports-1.css
@@ -1,3 +1,5 @@
+/* issue #258 */
+
 @supports ((-webkit-filter: invert(1)) or (filter: invert(1))) {
   a:hover {
     -webkit-filter: invert(1);