diff --git a/CHANGELOG.md b/CHANGELOG.md
index 474c75e..af17840 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+# v2.10.0
+
+* Updated Autoprefixer to 9.1.
+
 # v2.9.0
 
 * Updated Autoprefixer to 8.0.
diff --git a/lib/middleman-autoprefixer/version.rb b/lib/middleman-autoprefixer/version.rb
index 69f6bae..cc87cc4 100644
--- a/lib/middleman-autoprefixer/version.rb
+++ b/lib/middleman-autoprefixer/version.rb
@@ -1,5 +1,5 @@
 module Middleman
   module Autoprefixer
-    VERSION = '2.9.0'.freeze
+    VERSION = '2.10.0'.freeze
   end
 end