diff --git a/CMakeLists.txt b/CMakeLists.txt
index 73a6f3e72..b24c93267 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -59,7 +59,7 @@ endif()
 
 # set up versioning.
 set(DF_VERSION "0.40.19")
-SET(DFHACK_RELEASE "r0" CACHE STRING "Current release revision.")
+SET(DFHACK_RELEASE "r1" CACHE STRING "Current release revision.")
 
 set(DFHACK_VERSION "${DF_VERSION}-${DFHACK_RELEASE}")
 add_definitions(-DDFHACK_VERSION="${DFHACK_VERSION}")