diff --git a/Gemfile.lock b/Gemfile.lock
index 51968c6..4fa3869 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -5,24 +5,28 @@ PATH
       activesupport (~> 3.2.0)
       httpclient (~> 2.6)
       multi_json (>= 1.8, <= 1.9.2)
-      nokogiri (~> 1.5.10)
+      nokogiri (>= 1.5.10, < 1.11.0)
       oj (>= 1.4.7, <= 2.6.1)
 
 GEM
   remote: http://rubygems.org/
   specs:
-    activesupport (3.2.22)
+    activesupport (3.2.22.5)
       i18n (~> 0.6, >= 0.6.4)
       multi_json (~> 1.0)
     addressable (2.3.6)
+    concurrent-ruby (1.1.5)
     crack (0.4.2)
       safe_yaml (~> 1.0.0)
     diff-lcs (1.2.5)
     flexmock (1.3.3)
-    httpclient (2.6.0.1)
-    i18n (0.7.0)
+    httpclient (2.8.3)
+    i18n (0.9.5)
+      concurrent-ruby (~> 1.0)
+    mini_portile2 (2.4.0)
     multi_json (1.9.2)
-    nokogiri (1.5.11)
+    nokogiri (1.10.5)
+      mini_portile2 (~> 2.4.0)
     oj (2.6.1)
     rake (10.0.4)
     rspec (2.14.1)
diff --git a/ops.gemspec b/ops.gemspec
index b806857..e456c2b 100644
--- a/ops.gemspec
+++ b/ops.gemspec
@@ -47,7 +47,7 @@ Gem::Specification.new do |s|
   s.require_paths = %w(lib)
 
   s.add_runtime_dependency "activesupport", "~> 3.2.0"
-  s.add_runtime_dependency "nokogiri", "~> 1.5.10"
+  s.add_runtime_dependency "nokogiri", ">= 1.5.10", "< 1.11.0"
   s.add_runtime_dependency "httpclient", "~> 2.6"
   s.add_runtime_dependency "multi_json", ">= 1.8", "<= 1.9.2"
   s.add_runtime_dependency "oj", ">= 1.4.7", "<= 2.6.1"