diff --git a/paper_experiments/requirements.txt b/paper_experiments/requirements.txt
index d1746ec..d896dbb 100644
--- a/paper_experiments/requirements.txt
+++ b/paper_experiments/requirements.txt
@@ -64,7 +64,7 @@ Pillow==9.0.0
 pptk==0.1.0
 prometheus-client==0.5.0
 prompt-toolkit==2.0.8
-protobuf==3.6.1
+protobuf==3.18.3
 ptyprocess==0.6.0
 pycocotools==2.0.0
 Pygments==2.7.4