diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5a7f875..c6aaf15 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,10 @@
 # MockRedis Changelog
 
+### 0.40.0
+
+* Add support for `call` method name to be case insensitive
+* Add support for `zmscore`
+
 ### 0.39.0
 
 * Add support for calling `call` in `pipelined` block
diff --git a/lib/mock_redis/version.rb b/lib/mock_redis/version.rb
index 653f972..b212dc1 100644
--- a/lib/mock_redis/version.rb
+++ b/lib/mock_redis/version.rb
@@ -2,5 +2,5 @@
 
 # Defines the gem version.
 class MockRedis
-  VERSION = '0.39.0'
+  VERSION = '0.40.0'
 end