diff --git a/backbonejs-examples/ex2/Gemfile.lock b/backbonejs-examples/ex2/Gemfile.lock
index c769fef..a425f5b 100644
--- a/backbonejs-examples/ex2/Gemfile.lock
+++ b/backbonejs-examples/ex2/Gemfile.lock
@@ -28,7 +28,9 @@ GEM
     execjs (1.3.0)
       multi_json (~> 1.0)
     fastercsv (1.5.4)
-    haml (3.1.4)
+    haml (5.0.0)
+      temple (>= 0.8.0)
+      tilt
     hiredis (0.3.2)
     json (1.4.6)
     multi_json (1.1.0)
@@ -43,6 +45,7 @@ GEM
       rack-protection (~> 1.2)
       tilt (~> 1.3, >= 1.3.3)
     stringex (1.2.2)
+    temple (0.8.2)
     tilt (1.3.3)
     uuidtools (2.1.2)