diff --git a/CMakeLists.txt b/CMakeLists.txt
index e1af51f..4319c9d 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -9,7 +9,7 @@
 
 PROJECT(squish)
 
-CMAKE_MINIMUM_REQUIRED(VERSION 2.8.3)
+CMAKE_MINIMUM_REQUIRED(VERSION 3.13)
 
 SET(SQUISH_HDRS
     squish.h
@@ -42,6 +42,5 @@ SET(SQUISH_SRCS
     squish.cpp
     )
 
-INCLUDE_DIRECTORIES(${CMAKE_CURRENT_SOURCE_DIR})
-
 ADD_LIBRARY(squish ${SQUISH_SRCS} ${SQUISH_HDRS})
+TARGET_INCLUDE_DIRECTORIES(squish PUBLIC ${CMAKE_CURRENT_SOURCE_DIR})