diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3f70f37db..9e4ec65dd 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,11 @@
 ChangeLog
 =========
 
+4.2.2-dev (XXXX-XX-XX)
+------------------
+
+*
+
 4.2.1 (2019-12-18)
 ------------------
 
diff --git a/lib/Version.php b/lib/Version.php
index b728f216d..15d74ce1b 100644
--- a/lib/Version.php
+++ b/lib/Version.php
@@ -14,5 +14,5 @@ class Version
     /**
      * Full version number.
      */
-    const VERSION = '4.2.1';
+    const VERSION = '4.2.2-dev';
 }