diff --git a/pyproject.toml b/pyproject.toml
index 5ace7c18a..dde71f32e 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -28,7 +28,7 @@ dependencies = [
   "aiohttp>=3.10.2,<3.11",
   "cryptography>=43.0.1,<44",
   "grpcio>=1.53.2,<1.67",
-  "protobuf<4.22,>=4.21.12",
+  "protobuf>=4.21.12,<5.29",
   "pydantic<3,>=2.6",
   "pydantic-settings<3,>=2.3",
   "pyopenssl<25,>=24.1",
diff --git a/requirements.txt b/requirements.txt
index e1a74b16e..535568ced 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,7 +4,7 @@ aiofiles<25,>=24.1
 aiohttp>=3.10.2,<3.11
 cryptography>=43.0.1,<44
 grpcio>=1.53.2,<1.67
-protobuf<4.22,>=4.21.12
+protobuf>=4.21.12,<5.29
 pydantic<3,>=2.6
 pydantic-settings<3,>=2.3
 pyopenssl<25,>=24.1