diff --git a/requirements.txt b/requirements.txt
index eb3a44aa99fb09e17185018160c32de38b6f462b..1216a8286667d540b4b0a3ced00e1b1f55ff7ee6 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -8,3 +8,4 @@ librosa==0.7.0
 numba==0.48
 easydict
 munch
+ppgan