diff --git a/requirements.txt b/requirements.txt
index 5b52a4d..7e21599 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -35,7 +35,7 @@
     # via requests-oauthlib
 paramiko==2.7.2
     # via juju
-protobuf==3.17.0
+protobuf==3.15.6
     # via macaroonbakery
 pyasn1-modules==0.2.8
     # via google-auth
@@ -91,7 +91,7 @@
     # via juju
 toposort==1.6
     # via juju
-typing-extensions==3.10.0.0
+typing-extensions==3.7.4.3
     # via typing-inspect
 typing-inspect==0.6.0
     # via juju