diff --git a/src/requirements.txt b/src/requirements.txt
index 4e0d9d0..741384a 100644
--- a/src/requirements.txt
+++ b/src/requirements.txt
@@ -2,3 +2,4 @@ flask==2.2.3
 pyjson==1.3.0
 psycopg2==2.9.5
 pyaml==21.10.1
+gunicorn==20.1.0