diff --git a/Gemfile.lock b/Gemfile.lock
index ab3d3d9..743a6f0 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -3,7 +3,7 @@ PATH
   specs:
     gitlab_omniauth-ldap (1.2.1)
       net-ldap (~> 0.9)
-      omniauth (~> 1.0)
+      omniauth (>= 1, < 3)
       pyu-ruby-sasl (~> 0.0.3.1)
       rubyntlm (~> 0.3)
 
@@ -12,18 +12,21 @@ GEM
   specs:
     coderay (1.0.8)
     diff-lcs (1.1.3)
-    hashie (3.4.0)
+    hashie (4.1.0)
     method_source (0.8.1)
-    net-ldap (0.11)
-    omniauth (1.2.2)
-      hashie (>= 1.2, < 4)
-      rack (~> 1.0)
+    net-ldap (0.17.0)
+    omniauth (2.0.1)
+      hashie (>= 3.4.6)
+      rack (>= 1.6.2, < 3)
+      rack-protection
     pry (0.9.10)
       coderay (~> 1.0.5)
       method_source (~> 0.8)
       slop (~> 3.3.1)
     pyu-ruby-sasl (0.0.3.3)
-    rack (1.4.1)
+    rack (2.2.3)
+    rack-protection (2.1.0)
+      rack
     rack-test (0.6.2)
       rack (>= 1.0)
     rake (10.0.3)
@@ -35,7 +38,7 @@ GEM
     rspec-expectations (2.12.1)
       diff-lcs (~> 1.1.3)
     rspec-mocks (2.12.1)
-    rubyntlm (0.5.0)
+    rubyntlm (0.6.2)
     slop (3.3.3)
 
 PLATFORMS
diff --git a/gitlab_omniauth-ldap.gemspec b/gitlab_omniauth-ldap.gemspec
index 940512d..ac01c02 100644
--- a/gitlab_omniauth-ldap.gemspec
+++ b/gitlab_omniauth-ldap.gemspec
@@ -9,7 +9,7 @@ Gem::Specification.new do |gem|
   gem.homepage      = "https://github.com/gitlabhq/omniauth-ldap"
   gem.license       = "MIT"
 
-  gem.add_runtime_dependency     'omniauth', '~> 1.0'
+  gem.add_runtime_dependency     'omniauth', '>= 1', '< 3'
   gem.add_runtime_dependency     'net-ldap', '~> 0.9'
   gem.add_runtime_dependency     'pyu-ruby-sasl', '~> 0.0.3.1'
   gem.add_runtime_dependency     'rubyntlm', '~> 0.3'