diff --git a/CHANGELOG.md b/CHANGELOG.md
index cb2cdb882..7b3e99ea9 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,7 +2,7 @@
 
 All notable changes to this project will be documented in this file, in reverse chronological order by release.
 
-## 2.12.0 - TBD
+## 2.12.0 - 2019-01-30
 
 ### Added
 
diff --git a/composer.json b/composer.json
index c3a1b9627..ded80c0dd 100644
--- a/composer.json
+++ b/composer.json
@@ -47,8 +47,8 @@
     "prefer-stable": true,
     "extra": {
         "branch-alias": {
-            "dev-master": "2.11.x-dev",
-            "dev-develop": "2.12.x-dev"
+            "dev-master": "2.12.x-dev",
+            "dev-develop": "2.13.x-dev"
         },
         "zf": {
             "component": "Zend\\Validator",
diff --git a/composer.lock b/composer.lock
index d97d0150b..c95242d4f 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "fc4a25f172c3b4f78b1e1d38daa3c9da",
+    "content-hash": "d63c66fe8848c902d47f6175d0d73710",
     "packages": [
         {
             "name": "container-interop/container-interop",