diff --git a/CMakeLists.txt b/CMakeLists.txt
index 32f91908..1d823173 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -21,6 +21,7 @@ endif()
 enable_language(OBJC OBJCXX)
 
 INCLUDE (CheckCXXSourceCompiles)
+INCLUDE (FetchContent)
 
 set(libobjc_VERSION 4.6)