diff --git a/pyproject.toml b/pyproject.toml
index c89da8e..bee0098 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -9,7 +9,7 @@ classifiers = [
   "License :: OSI Approved :: MIT License",
   "Operating System :: OS Independent",
 ]
-dependencies = ["protobuf == 5.28.0"]
+dependencies = ["protobuf == 5.29.5"]
 description = "The maxwell protocol implementation for python."
 license = {file = "LICENSE"}
 name = "maxwell-protocol"
diff --git a/requirements.txt b/requirements.txt
index e3ececf..cbe5938 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,5 +4,5 @@
 #
 #    pip-compile --strip-extras
 #
-protobuf==5.28.0
+protobuf==5.29.5
     # via maxwell-protocol (setup.py)