diff --git a/CMakeLists.txt b/CMakeLists.txt
index 601b92b..5849c13 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,4 +1,4 @@
-CMAKE_MINIMUM_REQUIRED(VERSION 2.6)
+CMAKE_MINIMUM_REQUIRED(VERSION 3.5)
 
 PROJECT(FiSH-irssi C)