diff --git a/pull.sh b/pull.sh
index aeb82a8b..7536599e 100644
--- a/pull.sh
+++ b/pull.sh
@@ -4,6 +4,7 @@ docker exec -i taiko-mongo mongoexport --db taiko --collection users --out /dev/
 docker exec -i taiko-mongo mongoexport --db taiko --collection songs --out /dev/stdout | sort -n > songs.json
 docker exec -i taiko-mongo mongoexport --db taiko --collection scores --out /dev/stdout | sort -n > scores.json
 
+git gc --prune=now
 git add *.json
 changed=$(git diff --name-only --cached | paste -s -d " ")
 git commit --author="BOT <bot@example.com>" -m "$changed が更新されました"