diff --git a/Projects/AthSimulation/version.txt b/Projects/AthSimulation/version.txt
index 89dbc9e609aede941d9a3c544919255b8dc4fc5b..75cf4607db574af2b83f0714c1b6d37b26da7b16 100644
--- a/Projects/AthSimulation/version.txt
+++ b/Projects/AthSimulation/version.txt
@@ -1 +1 @@
-21.0.50
+21.0.51