diff --git a/CMakeL10n.txt b/CMakeL10n.txt
index a91bd2a..e0b1b56 100644
--- a/CMakeL10n.txt
+++ b/CMakeL10n.txt
@@ -9,7 +9,7 @@
 #
 #################################################
 
-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 84de059..9d313dd 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