diff --git a/CMakeLists.txt b/CMakeLists.txt
index 311589263..f95d738b6 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -195,9 +195,9 @@ if(NOT EXISTS ${dfhack_SOURCE_DIR}/library/xml/codegen.pl
 endif()
 
 # set up versioning.
-set(DF_VERSION "0.47.05")
-set(DFHACK_RELEASE "r8")
-set(DFHACK_PRERELEASE FALSE)
+set(DF_VERSION "0.50.03")
+set(DFHACK_RELEASE "alpha0")
+set(DFHACK_PRERELEASE TRUE)
 
 set(DFHACK_VERSION "${DF_VERSION}-${DFHACK_RELEASE}")