diff --git a/gcode/playground/rails/toy_app/Gemfile.lock b/gcode/playground/rails/toy_app/Gemfile.lock
index 93da6e36fb..c017421ac2 100644
--- a/gcode/playground/rails/toy_app/Gemfile.lock
+++ b/gcode/playground/rails/toy_app/Gemfile.lock
@@ -51,6 +51,7 @@ GEM
     coffee-script-source (1.9.1.1)
     columnize (0.9.0)
     concurrent-ruby (1.0.0)
+    crass (1.0.6)
     debug_inspector (0.0.2)
     erubis (2.7.0)
     execjs (2.6.0)
@@ -65,16 +66,17 @@ GEM
       railties (>= 4.2.0)
       thor (>= 0.14, < 2.0)
     json (1.8.3)
-    loofah (2.0.3)
+    loofah (2.19.1)
+      crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
     mail (2.6.3)
       mime-types (>= 1.16, < 3)
     mime-types (2.99)
-    mini_portile2 (2.0.0)
+    mini_portile2 (2.1.0)
     minitest (5.8.4)
     multi_json (1.11.2)
-    nokogiri (1.6.7.2)
-      mini_portile2 (~> 2.0.0.rc2)
+    nokogiri (1.6.8.1)
+      mini_portile2 (~> 2.1.0)
     rack (1.6.4)
     rack-test (0.6.3)
       rack (>= 1.0)
@@ -95,8 +97,8 @@ GEM
       activesupport (>= 4.2.0.beta, < 5.0)
       nokogiri (~> 1.6.0)
       rails-deprecated_sanitizer (>= 1.0.1)
-    rails-html-sanitizer (1.0.3)
-      loofah (~> 2.0)
+    rails-html-sanitizer (1.4.4)
+      loofah (~> 2.19, >= 2.19.1)
     railties (4.2.5.1)
       actionpack (= 4.2.5.1)
       activesupport (= 4.2.5.1)