diff --git a/mastodon.yaml b/mastodon.yaml
index c8f1397..0296cd0 100644
--- a/mastodon.yaml
+++ b/mastodon.yaml
@@ -66,7 +66,7 @@ services:
         hard: -1
 
   mastodon:
-    image: tootsuite/mastodon
+    image: tootsuite/mastodon:v3.5.9
     container_name: mastodon
     restart: always
     #command: bash -c "rm -f /mastodon/tmp/pids/server.pid; bundle exec rails s -p 6001"
@@ -140,7 +140,7 @@ services:
       - mastodon-redis
 
   mastodon-sidekiq:
-    image: tootsuite/mastodon
+    image: tootsuite/mastodon:v3.5.9
     restart: always
     container_name: mastodon-sidekiq
     env_file: