diff --git a/clang/cmake/caches/Fuchsia.cmake b/clang/cmake/caches/Fuchsia.cmake
index fe925901eb3dc..1209fd9359861 100644
--- a/clang/cmake/caches/Fuchsia.cmake
+++ b/clang/cmake/caches/Fuchsia.cmake
@@ -65,6 +65,7 @@ set(_FUCHSIA_BOOTSTRAP_PASSTHROUGH
   LLDB_EMBED_PYTHON_HOME
   LLDB_PYTHON_HOME
   LLDB_PYTHON_RELATIVE_PATH
+  LLDB_TEST_USE_VENDOR_PACKAGES
   Python3_EXECUTABLE
   Python3_LIBRARIES
   Python3_INCLUDE_DIRS