diff --git a/build.sh b/build.sh
index 3cb4ff6..1dd0728 100755
--- a/build.sh
+++ b/build.sh
@@ -8,6 +8,8 @@ mastodon_version=`curl -sL https://api.github.com/repos/mastodon/mastodon/releas
 
 # Change to the main repo
 cd mastodon
+git stash
+git checkout stable-4.2
 
 export MASTODON_VERSION_FOR_BIRD_UI="main"
 
diff --git a/mastodon b/mastodon
index b1fbb45..a5b4a2b 160000
--- a/mastodon
+++ b/mastodon
@@ -1 +1 @@
-Subproject commit b1fbb459941822517421b6e4f625f8fd3b2dbde4
+Subproject commit a5b4a2b7e71aedd2f04bc7a90f79dfe234fa7f89