diff --git a/Gemfile.lock b/Gemfile.lock
index 2fbffeb..0635f0c 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -10,7 +10,7 @@ PATH
   remote: .
   specs:
     active_admin-awesome_nested_set (0.0.4)
-      rails (~> 3.2.5)
+      rails (>= 3.2.5, < 5.0)
 
 GEM
   remote: https://rubygems.org/
@@ -143,10 +143,13 @@ GEM
     metaclass (0.0.1)
     method_source (0.8.1)
     mime-types (1.21)
+    mini_portile2 (2.8.0)
     mocha (0.10.5)
       metaclass (~> 0.0.1)
     multi_json (1.6.1)
-    nokogiri (1.5.6)
+    nokogiri (1.13.9)
+      mini_portile2 (~> 2.8.0)
+      racc (~> 1.4)
     orm_adapter (0.4.0)
     polyamorous (0.5.0)
       activerecord (~> 3.0)
@@ -155,6 +158,7 @@ GEM
       coderay (~> 1.0.5)
       method_source (~> 0.8)
       slop (~> 3.4)
+    racc (1.6.0)
     rack (1.4.5)
     rack-cache (1.2)
       rack (>= 0.4)