diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1c0ebb9d..ea3ee1ec 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,7 @@
 ChangeLog
 =========
+4.31.0 (2024-06-28)
+* #106 Merge upstream master 2024-06-27
 
 4.30.0 (2024-05-09)
 * #103 Fix customized timezone guesser
diff --git a/lib/Version.php b/lib/Version.php
index 7fef9c74..37d35a9e 100644
--- a/lib/Version.php
+++ b/lib/Version.php
@@ -14,5 +14,5 @@ class Version
     /**
      * Full version number.
      */
-    public const VERSION = '4.30.0';
+    public const VERSION = '4.31.0';
 }