diff --git a/Projects/AthDerivation/version.txt b/Projects/AthDerivation/version.txt
index f1def004f2e1eb6994f42552182bc4fe5d50b657..70b0146906e7f4f8f6e9db89dcac865345b01444 100644
--- a/Projects/AthDerivation/version.txt
+++ b/Projects/AthDerivation/version.txt
@@ -1 +1 @@
-21.2.50.0
\ No newline at end of file
+21.2.51.0
\ No newline at end of file