diff --git a/tasks/install.yaml b/tasks/install.yaml
index 54de28b..a17ce24 100644
--- a/tasks/install.yaml
+++ b/tasks/install.yaml
@@ -21,7 +21,7 @@
   package:
     name: "{{ item }}"
     state: installed
-  with_items: jenkins_build_depends
+  with_items: "{{ jenkins_build_depends }}"
 
 - name: Ensure jenkins is installed.
   package: