diff --git a/requirements.txt b/requirements.txt
index 7a2f86c..eb5085b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,4 @@
 defusedxml==0.7.1
-protobuf==3.17.1
+protobuf==3.17.3
 pycryptodomex==3.10.1
 requests==2.25.1