diff --git a/Projects/AthSimulation/version.txt b/Projects/AthSimulation/version.txt
index 07bd829ac0c37aa2a341ffa9ea9bcd91549a538d..2f06047848ff096da667975af6260a3e70928bf9 100644
--- a/Projects/AthSimulation/version.txt
+++ b/Projects/AthSimulation/version.txt
@@ -1 +1 @@
-21.0.20.9
+21.0.20.10