diff --git a/setup.py b/setup.py
index 060b5a5..7456d1f 100644
--- a/setup.py
+++ b/setup.py
@@ -37,7 +37,7 @@ def read(*parts):
 
 mypy_requires = [
     'mypy==1.*',
-    'types-protobuf==4.24.*'
+    'types-protobuf>=4.24,<4.26'
 ]
 
 tests_require = [