diff --git a/Gemfile.lock b/Gemfile.lock
index 9c06d4b..7f594f7 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -3,7 +3,7 @@ PATH
   specs:
     suby (0.4.6)
       mime-types (~> 1.19)
-      nokogiri (~> 1.8.2)
+      nokogiri (>= 1.8.2, < 1.11.0)
       path (~> 1.3)
       rubyzip (~> 1.2.1)
       term-ansicolor (~> 1.2)
@@ -13,9 +13,9 @@ GEM
   specs:
     diff-lcs (1.2.5)
     mime-types (1.25.1)
-    mini_portile2 (2.3.0)
-    nokogiri (1.8.4)
-      mini_portile2 (~> 2.3.0)
+    mini_portile2 (2.4.0)
+    nokogiri (1.10.4)
+      mini_portile2 (~> 2.4.0)
     path (1.3.3)
     rspec (2.14.1)
       rspec-core (~> 2.14.0)
@@ -25,10 +25,10 @@ GEM
     rspec-expectations (2.14.5)
       diff-lcs (>= 1.1.3, < 2.0)
     rspec-mocks (2.14.6)
-    rubyzip (1.2.1)
-    term-ansicolor (1.6.0)
+    rubyzip (1.2.4)
+    term-ansicolor (1.7.1)
       tins (~> 1.0)
-    tins (1.16.3)
+    tins (1.21.1)
     xmlrpc (0.3.0)
 
 PLATFORMS
diff --git a/suby.gemspec b/suby.gemspec
index 6064a19..150c610 100644
--- a/suby.gemspec
+++ b/suby.gemspec
@@ -12,7 +12,7 @@ Gem::Specification.new do |s|
 
   s.required_ruby_version = '>= 1.9.2'
   s.add_dependency 'path', '~> 1.3'
-  s.add_dependency 'nokogiri', '~> 1.8.2'
+  s.add_dependency 'nokogiri', '>= 1.8.2', '< 1.11.0'
   s.add_dependency 'rubyzip', '~> 1.2.1'
   s.add_dependency 'term-ansicolor', '~> 1.2'
   s.add_dependency 'mime-types', '~> 1.19'