diff --git a/CMakeLists.txt b/CMakeLists.txt
index 3ed4d772..08727ae2 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -312,6 +312,7 @@ add_subdirectory(libraries/launcher) # java based launcher part for Minecraft
 add_subdirectory(libraries/javacheck) # java compatibility checker
 if(NOT ZLIB_FOUND)
     message(STATUS "Using bundled zlib")
+    set(CMAKE_POLICY_DEFAULT_CMP0069 NEW) # Suppress cmake warnings and allow INTERPROCEDURAL_OPTIMIZATION for zlib
     set(SKIP_INSTALL_ALL ON)
     add_subdirectory(libraries/zlib EXCLUDE_FROM_ALL)