diff --git a/CHANGELOG.md b/CHANGELOG.md
index 84c57163..63de0bd0 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,14 @@
 # Changelog
 
+## 0.12.0
+
+*2018-06-12*
+
+BREAKING CHANGES:
+
+- [abci-cli] Change rpc port from 46658 to 26658.
+- [examples] Change rpc port from 46658 to 26658.
+
 ## 0.11.0
 
 *June 6, 2018*
diff --git a/version/version.go b/version/version.go
index e813a01c..7223a86a 100644
--- a/version/version.go
+++ b/version/version.go
@@ -3,7 +3,7 @@ package version
 // NOTE: we should probably be versioning the ABCI and the abci-cli separately
 
 const Maj = "0"
-const Min = "11"
+const Min = "12"
 const Fix = "0"
 
-const Version = "0.11.0"
+const Version = "0.12.0"