diff --git a/CMakeLists.txt b/CMakeLists.txt
index 6d1d4c562..c1560c630 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -192,8 +192,8 @@ endif()
 
 # set up versioning.
 set(DF_VERSION "50.08")
-set(DFHACK_RELEASE "r1")
-set(DFHACK_PRERELEASE FALSE)
+set(DFHACK_RELEASE "r2rc1")
+set(DFHACK_PRERELEASE TRUE)
 
 set(DFHACK_VERSION "${DF_VERSION}-${DFHACK_RELEASE}")