diff --git a/backend/main.py b/backend/main.py
index d3fce78..73a8200 100644
--- a/backend/main.py
+++ b/backend/main.py
@@ -123,4 +123,4 @@ def route_frontend(path):
 
 
 if __name__ == "__main__":
-    app.run(host="0.0.0.0", port=80)
+    app.run(host="0.0.0.0", port=os.getenv("PORT", "80"))