diff --git a/CHANGELOG.md b/CHANGELOG.md
index 055620ef..8cef074c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,8 @@
 # CHANGELOG
 
+### NEXT (YYYY-MM-DD)
+
+
 ### 1.3.3 (2022-11-16)
 *  Fix invalid format MIME type definition (#835, @xdanik)
 
diff --git a/src/Image/ImagineInterface.php b/src/Image/ImagineInterface.php
index 85eb67b1..e6c80cc0 100644
--- a/src/Image/ImagineInterface.php
+++ b/src/Image/ImagineInterface.php
@@ -20,7 +20,7 @@
  */
 interface ImagineInterface extends ClassFactoryAwareInterface
 {
-    const VERSION = '1.3.3';
+    const VERSION = '1.3.4-dev';
 
     /**
      * Creates a new empty image with an optional background color.