diff --git a/CHANGELOG.md b/CHANGELOG.md
index de9ef91..8ef096d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 0.6.7 (2018/10/16)
+
+* Update memoist dependency to ~> 0.16.
+
 ## 0.6.6 (2018/08/22)
 
 * Remove ruby version warnings.
diff --git a/lib/googleauth/version.rb b/lib/googleauth/version.rb
index 169f2e3..dfca2a0 100644
--- a/lib/googleauth/version.rb
+++ b/lib/googleauth/version.rb
@@ -31,6 +31,6 @@ module Google
   # Module Auth provides classes that provide Google-specific authorization
   # used to access Google APIs.
   module Auth
-    VERSION = '0.6.6'.freeze
+    VERSION = '0.6.7'.freeze
   end
 end