diff --git a/modules/python/python_loader.cmake b/modules/python/python_loader.cmake
index 41dce57c18..dc16083c2a 100644
--- a/modules/python/python_loader.cmake
+++ b/modules/python/python_loader.cmake
@@ -139,6 +139,7 @@ if(${PYTHON}_VERSION_STRING VERSION_GREATER "3.6" AND PYTHON_DEFAULT_VERSION VER
   # halts on hard error.
   add_custom_command(
     TARGET copy_opencv_typing_stubs
+    POST_BUILD
     COMMAND ${PYTHON_DEFAULT_EXECUTABLE} ${PYTHON_SOURCE_DIR}/src2/copy_typings_stubs_on_success.py
             --stubs_dir ${OPENCV_PYTHON_BINDINGS_DIR}/cv2
             --output_dir ${__loader_path}/cv2