diff --git a/lib/resque/integration/unique.rb b/lib/resque/integration/unique.rb
index 9e87600..542ccdc 100644
--- a/lib/resque/integration/unique.rb
+++ b/lib/resque/integration/unique.rb
@@ -3,6 +3,7 @@
 require 'digest/sha1'
 
 require 'active_support/core_ext/module/aliasing'
+require 'active_support/core_ext/hash'
 
 require 'resque/plugins/lock'
 require 'resque/plugins/progress'
@@ -66,6 +67,8 @@ def lock_on(&block)
         # LockID should be independent from MetaID
         # @api private
         def lock(meta_id, *args)
+          args = [*args[0..-2], args.last.with_indifferent_access] if args.last.is_a?(Hash)
+
           "lock:#{name}-#{Digest::SHA1.hexdigest(obj_to_string(lock_on[*args]))}"
         end
 
diff --git a/resque-integration.gemspec b/resque-integration.gemspec
index fc8e621..d7dfe39 100644
--- a/resque-integration.gemspec
+++ b/resque-integration.gemspec
@@ -22,6 +22,7 @@ Gem::Specification.new do |gem|
   gem.add_runtime_dependency 'railties', '>= 3.0.0'
   gem.add_runtime_dependency 'activerecord', '>= 3.0.0'
   gem.add_runtime_dependency 'actionpack', '>= 3.0.0'
+  gem.add_runtime_dependency 'activesupport', '>= 3.0.0'
   gem.add_runtime_dependency 'resque-lock', '~> 1.1.0'
   gem.add_runtime_dependency 'resque-meta', '>= 2.0.0'
   gem.add_runtime_dependency 'resque-progress', '~> 1.0.1'
diff --git a/spec/resque/integration_spec.rb b/spec/resque/integration_spec.rb
index f749d54..905197b 100644
--- a/spec/resque/integration_spec.rb
+++ b/spec/resque/integration_spec.rb
@@ -21,42 +21,92 @@
 
   describe 'enqueue' do
     context 'when job is uniq' do
+      class DummyService
+        def self.call
+          # no-op
+        end
+      end
+
       class UniqueJob
         include Resque::Integration
 
         queue :test
         unique
+
+        def self.execute(id, params)
+          DummyService.call
+        end
       end
 
       it 'enqueues only one job' do
-        UniqueJob.enqueue(param: 'one')
+        UniqueJob.enqueue(1, param: 'one')
 
         Timecop.travel(10.hours.since) do
-          UniqueJob.enqueue(param: 'one')
+          UniqueJob.enqueue(1, param: 'one')
 
           expect(Resque.peek(:test, 0, 100).size).to eq(1)
         end
       end
 
       it 'enqueues two jobs with differ args' do
-        UniqueJob.enqueue(param: 'one')
+        UniqueJob.enqueue(1, param: 'one')
 
         Timecop.travel(10.hours.since) do
-          UniqueJob.enqueue(param: 'two')
+          UniqueJob.enqueue(1, param: 'two')
 
           expect(Resque.peek(:test, 0, 100).size).to eq(2)
         end
       end
 
       it 'enqueues two jobs after expire lock timeout' do
-        UniqueJob.enqueue(param: 'one')
+        UniqueJob.enqueue(1, param: 'one')
 
         Timecop.travel(4.days.since) do
-          UniqueJob.enqueue(param: 'one')
+          UniqueJob.enqueue(1, param: 'one')
 
           expect(Resque.peek(:test, 0, 100).size).to eq(2)
         end
       end
+
+      describe 'unlock' do
+        class UniqueJobWithBlock
+          include Resque::Integration
+
+          queue :test_with_block
+          unique { |id, params| [id, params[:one], params[:two]] }
+
+          def self.execute(id, params)
+            DummyService.call
+          end
+        end
+
+        around do |example|
+          inline = Resque.inline
+          Resque.inline = true
+
+          example.run
+
+          Resque.inline = inline
+        end
+
+        it 'unlocks uniq job with args and without block' do
+          expect(DummyService).to receive(:call).twice
+
+          UniqueJob.enqueue(1, one: 1, two: 2)
+          UniqueJob.enqueue(1, one: 1, two: 2)
+
+          expect(UniqueJob.locked?(1, one: 1, two: 2)).to eq(false)
+        end
+
+        it 'unlocks uniq job with args and block' do
+          expect(DummyService).to receive(:call).twice
+
+          UniqueJobWithBlock.enqueue(1, one: 1, two: 2)
+          UniqueJobWithBlock.enqueue(1, one: 1, two: 2)
+
+          expect(UniqueJobWithBlock.locked?(1, one: 1, two: 2)).to eq(false)
+        end
+      end
     end
   end
 end