diff --git a/Changelog.md b/Changelog.md
index 7a0da95..c5667ad 100644
--- a/Changelog.md
+++ b/Changelog.md
@@ -1,6 +1,6 @@
 # Changelog
 
-## [13.0.0] *Breaking Change*
+## [13.0.0] *Breaking Change* - 21 June 2024
 
 ### Features
 
diff --git a/elm.json b/elm.json
index d85d130..d585cde 100644
--- a/elm.json
+++ b/elm.json
@@ -3,7 +3,7 @@
     "name": "linsyking/messenger-core",
     "summary": "Core library for Messenger.",
     "license": "BSD-3-Clause",
-    "version": "12.1.0",
+    "version": "13.0.0",
     "exposed-modules": {
         "Base": [
             "Messenger.Base",