diff --git a/CMakeLists.txt b/CMakeLists.txt
index 675f004c..077a02d2 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -27,7 +27,7 @@ endif()
 
 # ############
 # Define Project
-project(triqs_dft_tools VERSION 3.1.0 LANGUAGES C CXX Fortran)
+project(triqs_dft_tools VERSION 3.1.1 LANGUAGES C CXX Fortran)
 get_directory_property(IS_SUBPROJECT PARENT_DIRECTORY)
 
 # ############