diff --git a/pyproject.toml b/pyproject.toml
index 2c550f9..1c19109 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -31,7 +31,7 @@ classifiers = [
 requires-python = ">=3.10.14"
 dynamic = ["version"]
 dependencies = [
-    "protobuf>=4.25.2,<5.0.0",
+    "protobuf>=5.27.0,<6.0.0",
     "requests>=2.30.0,<3.0.0",
     "pandas>=2.2.0,<3.0.0",
 ]