diff --git a/CMakeLists.txt b/CMakeLists.txt
index babdc739..6cc4e25a 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -8,7 +8,7 @@ project(arpack C Fortran)
 
 set(arpack_ng_MAJOR_VERSION 3)
 set(arpack_ng_MINOR_VERSION 9)
-set(arpack_ng_PATCH_VERSION 0)
+set(arpack_ng_PATCH_VERSION 1)
 set(arpack_ng_VERSION ${arpack_ng_MAJOR_VERSION}.${arpack_ng_MINOR_VERSION}.${arpack_ng_PATCH_VERSION})
 
 set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} ${PROJECT_SOURCE_DIR}/cmake)