diff --git a/requirements.txt b/requirements.txt
index b46c66a26401494c20f397a0ba0b0584a2062696..93fc39da993f187903526a9e0e9412669fa18476 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -13,4 +13,5 @@ mutagen==1.44.0
 validators==0.12.1
 simplejson==3.17.0
 accessify==0.3.1
-librosa==0.7.2
\ No newline at end of file
+librosa==0.7.2
+gunicorn=20.0.4
\ No newline at end of file