diff --git a/cmake/Globals.cmake b/cmake/Globals.cmake
index 2e30bbf3a5ce0..303e49802a1a4 100644
--- a/cmake/Globals.cmake
+++ b/cmake/Globals.cmake
@@ -129,6 +129,7 @@ else()
   set(WARNING WARNING)
 endif()
 
+# TODO: This causes flaky zig builds in CI, so temporarily disable it.
 # if(CI)
 #   set(DEFAULT_VENDOR_PATH ${CACHE_PATH}/vendor)
 # else()