diff --git a/CMakeLists.txt b/CMakeLists.txt
index c3f6f06a4..c34e0fedc 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -107,7 +107,7 @@ endif()
 # set up versioning.
 set(DF_VERSION "0.43.02")
 SET(DFHACK_RELEASE "alpha0")
-SET(DFHACK_PRERELEASE FALSE)
+SET(DFHACK_PRERELEASE TRUE)
 
 set(DFHACK_VERSION "${DF_VERSION}-${DFHACK_RELEASE}")