diff --git a/CMakeLists.txt b/CMakeLists.txt
index f8fda0930..14f76c330 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -2,7 +2,10 @@ project(OpenTX)
 
 set(VERSION_MAJOR "2")
 set(VERSION_MINOR "3")
-set(VERSION_REVISION "13")
+set(VERSION_REVISION "12")
+if (TEST_BUILD_WARNING)
+  math(EXPR VERSION_REVISION "${VERSION_REVISION} + 1")
+endif()
 set(VERSION_SUFFIX $ENV{OPENTX_VERSION_SUFFIX})
 set(VERSION_FAMILY ${VERSION_MAJOR}.${VERSION_MINOR})
 set(VERSION ${VERSION_MAJOR}.${VERSION_MINOR}.${VERSION_REVISION}${VERSION_SUFFIX})