diff --git a/setup.py b/setup.py
index 99f98ce..882307c 100644
--- a/setup.py
+++ b/setup.py
@@ -43,7 +43,7 @@
     extras_require={
         "cloud-run": [
             "flask==3.*",
-            "gunicorn==23.*",
+            "gunicorn>=23,<26",
             "google-cloud-storage==3.*",
         ],
         "tests": [