diff --git a/core/client/bower.json b/core/client/bower.json
index 4b670e62ea..8d4b8377a5 100644
--- a/core/client/bower.json
+++ b/core/client/bower.json
@@ -27,7 +27,6 @@
     "rangyinputs": "1.2.0",
     "selectize": "~0.12.1",
     "showdown-ghost": "0.3.6",
-    "sinonjs": "1.14.1",
     "validator-js": "3.39.0",
     "xregexp": "2.0.0"
   }
diff --git a/core/client/package.json b/core/client/package.json
index 606dc53e03..a2e422dce5 100644
--- a/core/client/package.json
+++ b/core/client/package.json
@@ -46,7 +46,7 @@
     "ember-resolver": "2.0.3",
     "ember-route-action-helper": "0.3.0",
     "ember-simple-auth": "1.0.1",
-    "ember-sinon": "0.3.0",
+    "ember-sinon": "0.5.0",
     "ember-sortable": "1.7.0",
     "ember-suave": "1.2.3",
     "ember-watson": "0.7.0",