diff --git a/pyproject.toml b/pyproject.toml
index 4e29119..4e59490 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -27,6 +27,7 @@ classifiers = [
 ]
 dependencies = [
     "flask",
+    "gunicorn"
 ]
 
 [project.optional-dependencies]