diff --git a/CMakeL10n.txt b/CMakeL10n.txt
index 8c4c584..3c4ffcf 100644
--- a/CMakeL10n.txt
+++ b/CMakeL10n.txt
@@ -6,7 +6,7 @@
 #                                       #
 #########################################
 
-cmake_minimum_required( VERSION 3.1 )
+cmake_minimum_required( VERSION 3.5 )
 
 
 ##### include our cmake modules #########
diff --git a/CMakeLists.txt b/CMakeLists.txt
index e0002f9..1887c90 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -7,7 +7,7 @@
 ############################################
 
 
-cmake_minimum_required( VERSION 3.1 )
+cmake_minimum_required( VERSION 3.5 )
 
 
 #### general package setup