diff --git a/CMakeLists.txt b/CMakeLists.txt
index f78eb6fa0..bcc332009 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -81,7 +81,7 @@ set(TR_VERSION_MAJOR "4")
 set(TR_VERSION_MINOR "0")
 set(TR_VERSION_PATCH "0")
 set(TR_VERSION_BETA_NUMBER "3") # empty string for not beta
-set(TR_VERSION_DEV FALSE)
+set(TR_VERSION_DEV TRUE)
 
 # derived from above: release type
 if(TR_VERSION_DEV)