diff --git a/requirements-dev.txt b/requirements-dev.txt
index c5fe70e..85a5060 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -94,7 +94,7 @@ pre-commit==3.7.1
     # via livecode-archive (pyproject.toml)
 proto-plus==1.23.0
     # via google-api-core
-protobuf==4.25.3
+protobuf==5.29.6
     # via
     #   google-api-core
     #   googleapis-common-protos
diff --git a/requirements.txt b/requirements.txt
index 17de1cf..e1c328d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -54,7 +54,7 @@ pluggy==1.5.0
     # via pytest
 proto-plus==1.23.0
     # via google-api-core
-protobuf==4.25.3
+protobuf==5.29.6
     # via
     #   google-api-core
     #   googleapis-common-protos