diff --git a/requirements.txt b/requirements.txt
index 959c3529..1b5ed36f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -51,7 +51,7 @@ oauthlib==3.1.0
 odfpy==1.4.0
 openpyxl==3.0.2
 opt-einsum==3.1.0
-protobuf==3.11.2
+protobuf==3.18.3
 pyasn1==0.4.8
 pyasn1-modules==0.2.7
 pylint==2.4.4