diff --git a/tests/googletest-download/CMakeLists.txt.in b/tests/googletest-download/CMakeLists.txt.in
index 5c2a362..7ba54b4 100644
--- a/tests/googletest-download/CMakeLists.txt.in
+++ b/tests/googletest-download/CMakeLists.txt.in
@@ -12,6 +12,7 @@ ExternalProject_Add(googletest
     GIT_SHALLOW       1
     SOURCE_DIR        "${CMAKE_CURRENT_BINARY_DIR}/googletest-src"
     BINARY_DIR        "${CMAKE_CURRENT_BINARY_DIR}/googletest-build"
+    UPDATE_COMMAND    ""
     CONFIGURE_COMMAND ""
     BUILD_COMMAND     ""
     INSTALL_COMMAND   ""