diff --git a/CMakeLists.txt b/CMakeLists.txt
index ae0e9e1c4..0cf8e4b25 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -25,7 +25,7 @@ set(DF_VERSION_MINOR "31")
 set(DF_VERSION_PATCH "25")
 set(DF_VERSION "${DF_VERSION_MAJOR}.${DF_VERSION_MINOR}.${DF_VERSION_PATCH}")
 
-set(DFHACK_RELEASE "9a")
+set(DFHACK_RELEASE "9b")
 
 ## where to install things (after the build is done, classic 'make install' or package structure)
 # the dfhack libraries will be installed here: