diff --git a/CMakeLists.txt b/CMakeLists.txt
index 3cbbe6a1f..8c9ace59b 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -58,7 +58,7 @@ set(DF_VERSION_MINOR "34")
 set(DF_VERSION_PATCH "07")
 set(DF_VERSION "${DF_VERSION_MAJOR}.${DF_VERSION_MINOR}.${DF_VERSION_PATCH}")
 
-set(DFHACK_RELEASE "1")
+SET(DFHACK_RELEASE "1" CACHE STRING "Current release revision.")
 
 set(DFHACK_VERSION "${DF_VERSION_MAJOR}.${DF_VERSION_MINOR}.${DF_VERSION_PATCH}-r${DFHACK_RELEASE}")
 add_definitions(-DDFHACK_VERSION="${DFHACK_VERSION}")