diff --git a/app/services/store.coffee b/app/services/store.coffee
index 02c1f94e..499b0818 100644
--- a/app/services/store.coffee
+++ b/app/services/store.coffee
@@ -71,9 +71,21 @@ Store = DS.Store.extend
     if type == 'build' && (json.repository || json.repo)
       data = json.repository || json.repo
 
-      if data.default_branch
-        data.default_branch.default_branch = true
+      default_branch = data.default_branch
+      if default_branch
+        default_branch.default_branch = true
 
-      @push(this.normalize('repo', data))
+      last_build_id = default_branch.last_build_id
+      # a build is a synchronous relationship on a branch model, so we need to
+      # have a build record present when we put default_branch from a repository
+      # model into the store. We don't send last_build's payload in pusher, so
+      # we need to get it here, if it's not already in the store. In the future
+      # we may decide to make this relationship async, but I don't want to
+      # change the code at the moment
+      if build = @peekRecord('build', last_build_id)
+        @push(this.normalize('repo', data))
+      else
+        @findRecord('build', last_build_id).then =>
+          @push(this.normalize('repo', data))
 
 `export default Store`