diff --git a/docs/requirements.txt b/docs/requirements.txt
index fe968ef..2db3b05 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -87,7 +87,7 @@ pbr==3.1.1
 pexpect==4.2.1
 Pillow==5.1.0
 pipreqs==0.4.11
-protobuf==3.19.1
+protobuf==3.19.5
 pudb==2022.1
 pyasn1==0.4.2
 pyasn1-modules==0.2.1