diff --git a/video2x/requirements.txt b/video2x/requirements.txt
index 903c478..a8680ac 100644
--- a/video2x/requirements.txt
+++ b/video2x/requirements.txt
@@ -1,3 +1,10 @@
+# *-ncnn-vulkan driver backends
+git+git://github.com/media2x/waifu2x-ncnn-vulkan-python@master
+git+git://github.com/media2x/realsr-ncnn-vulkan-python@master
+git+git://github.com/media2x/srmd-ncnn-vulkan-python@master
+git+git://github.com/media2x/rife-ncnn-vulkan-python@master
+
+# regular Python packages from PyPI
 ffmpeg-python
 loguru
 opencv-python