diff --git a/src/PIL/_version.py b/src/PIL/_version.py
index 1018b96b5..0568943b5 100644
--- a/src/PIL/_version.py
+++ b/src/PIL/_version.py
@@ -1,4 +1,4 @@
 # Master version for Pillow
 from __future__ import annotations
 
-__version__ = "10.2.0"
+__version__ = "10.3.0.dev0"