diff --git a/roles/mastodon-app/tasks/main.yml b/roles/mastodon-app/tasks/main.yml
index b41d502..4821ada 100644
--- a/roles/mastodon-app/tasks/main.yml
+++ b/roles/mastodon-app/tasks/main.yml
@@ -20,7 +20,7 @@
   git:
     repo: 'https://github.com/tootsuite/mastodon.git'
     dest: /home/mastodon/live
-    version: {{ MASTODON_VERSION }}
+    version: "{{ MASTODON_VERSION }}"
   become: true
   become_user: mastodon
 - name: Install bundler