diff --git a/CMakeLists.txt b/CMakeLists.txt
index e96e0a64b..e3eae1e5b 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -7,7 +7,7 @@ include (CheckStructHasMember)
 set (HAVE_CMAKE true)
 
 project (task)
-set (PROJECT_VERSION "2.5.1")
+set (PROJECT_VERSION "2.5.1.beta1")
 
 OPTION (ENABLE_SYNC "Enable 'task sync' support" ON)