diff --git a/Gemfile.lock b/Gemfile.lock
index b789251..54d48ad 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,9 +1,8 @@
 GIT
-  remote: git://github.com/rails-api/active_model_serializers.git
-  revision: 77fb050d24420cc77734973e7f57f1980aca6963
+  remote: https://github.com/rails-api/active_model_serializers.git
+  revision: beeb216fab286537389788349c513264325393ef
   specs:
-    active_model_serializers (0.10.0.pre)
-      activemodel (>= 4.0)
+    active_model_serializers (1.0.0.pre.dev)
 
 GEM
   remote: https://rubygems.org/
@@ -67,6 +66,7 @@ GEM
       simplecov (>= 0.7.1, < 1.0.0)
     coderay (1.1.0)
     columnize (0.9.0)
+    crass (1.0.6)
     debugger-linecache (1.2.0)
     diff-lcs (1.2.5)
     docile (1.1.5)
@@ -111,7 +111,8 @@ GEM
       actionpack (>= 3.0)
       activerecord (>= 3.0)
       railties (>= 3.0)
-    loofah (2.0.1)
+    loofah (2.19.1)
+      crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
     lumberjack (1.0.9)
     mail (2.6.3)
@@ -165,8 +166,8 @@ GEM
       activesupport (>= 4.2.0.beta, < 5.0)
       nokogiri (~> 1.6.0)
       rails-deprecated_sanitizer (>= 1.0.1)
-    rails-html-sanitizer (1.0.1)
-      loofah (~> 2.0)
+    rails-html-sanitizer (1.4.4)
+      loofah (~> 2.19, >= 2.19.1)
     rails_12factor (0.0.3)
       rails_serve_static_assets
       rails_stdout_logging