diff --git a/requirements.txt b/requirements.txt
index 95427c4..67a6e3f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -3,6 +3,7 @@ coverage==7.2.7
 detect-secrets==1.4.0
 flake8==6.1.0
 Flask==2.3.2
+gunicorn==21.2.0
 isort==5.12.0
 mypy==1.4.1
 pre-commit==3.3.3