diff --git a/Pybelt/requirements.txt b/Pybelt/requirements.txt
index 9c363411..2d4bce88 100644
--- a/Pybelt/requirements.txt
+++ b/Pybelt/requirements.txt
@@ -1,6 +1,7 @@
 httplib2==0.18.1
 colorlog==2.10.0
 beautifulsoup4==4.5.3
-protobuf==3.2.0rc2
+protobuf==4.25.8
 requests==2.20.0
 google==1.9.3
+urllib3>=2.5.0 # not directly required, pinned by Snyk to avoid a vulnerability