diff --git a/CHANGELOG.md b/CHANGELOG.md
index 29fd4a7864e7..c54fe572405c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -27,6 +27,7 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/).
 - Added support for graph-level outputs in `to_hetero` ([#4582](https://github.com/pyg-team/pytorch_geometric/pull/4582))
 - Added `CHANGELOG.md` ([#4581](https://github.com/pyg-team/pytorch_geometric/pull/4581))
 ### Changed
+- Fixed `protobuf` version ([#4719](https://github.com/pyg-team/pytorch_geometric/pull/4719))
 - Fixed the ranking protocol bug in the RGCN link prediction example ([#4688](https://github.com/pyg-team/pytorch_geometric/pull/4688))
 - Math support in Markdown ([#4683](https://github.com/pyg-team/pytorch_geometric/pull/4683))
 - Allow for `setter` properties in `Data` ([#4682](https://github.com/pyg-team/pytorch_geometric/pull/4682), [#4686](https://github.com/pyg-team/pytorch_geometric/pull/4686))
diff --git a/setup.py b/setup.py
index 6ada4afcde8a..f1097d1db352 100644
--- a/setup.py
+++ b/setup.py
@@ -16,6 +16,7 @@
 graphgym_requires = [
     'yacs',
     'hydra-core',
+    'protobuf<4.21',
     'pytorch-lightning',
 ]
 
@@ -36,6 +37,7 @@
 ]
 
 benchmark_requires = [
+    'protobuf<4.21',
     'wandb',
 ]