diff --git a/backend/requirements.txt b/backend/requirements.txt
index f2f2b62..006ca1b 100644
--- a/backend/requirements.txt
+++ b/backend/requirements.txt
@@ -94,7 +94,7 @@ pluggy==1.0.0
 pre-commit==2.15.0
 premailer==3.10.0
 prompt-toolkit==3.0.24
-protobuf==3.19.1
+protobuf==3.19.5
 ptyprocess==0.7.0
 py==1.11.0
 pyclipper==1.3.0.post4