diff --git a/requirements.txt b/requirements.txt
index da0ec0b63092f0618bb7c9982b95fa90e8f91118..fe12100f6e9a506c401a9b43ac367d50b8554e61 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -15,3 +15,4 @@ setupext-janitor>=1.1.2
 toposort==1.5
 vcdvcd==1.0.5
 wget==3.2
+protobuf==3.20.1
\ No newline at end of file