diff --git a/lib/rspec/sidekiq/matchers/be_unique.rb b/lib/rspec/sidekiq/matchers/be_unique.rb
index 97bc292..96f1c25 100644
--- a/lib/rspec/sidekiq/matchers/be_unique.rb
+++ b/lib/rspec/sidekiq/matchers/be_unique.rb
@@ -25,6 +25,9 @@ def failure_message
             if !interval_matches? && @expected_interval
               "expected #{@klass} to be unique for #{@expected_interval} seconds, "\
               "but its interval was #{actual_interval} seconds"
+            elsif !expiration_matches?
+              "expected #{@klass} to be unique until #{@expected_expiration}, "\
+              "but its unique_until was #{actual_expiration || 'not specified'}"
             else
               "expected #{@klass} to be unique in the queue"
             end
@@ -33,7 +36,7 @@ def failure_message
           def matches?(job)
             @klass = job.is_a?(Class) ? job : job.class
             @actual = @klass.get_sidekiq_options[unique_key]
-            !!(value_matches? && interval_matches?)
+            !!(value_matches? && interval_matches? && expiration_matches?)
           end
 
           def for(interval)
@@ -41,6 +44,11 @@ def for(interval)
             self
           end
 
+          def until(expiration)
+            @expected_expiration = expiration
+            self
+          end
+
           def interval_specified?
             @expected_interval
           end
@@ -49,6 +57,10 @@ def interval_matches?
             !interval_specified? || actual_interval == @expected_interval
           end
 
+          def expiration_matches?
+            @expected_expiration.nil? || actual_expiration ==  @expected_expiration
+          end
+
           def failure_message_when_negated
             "expected #{@klass} to not be unique in the queue"
           end
@@ -59,6 +71,10 @@ def actual_interval
             @klass.get_sidekiq_options['unique_job_expiration']
           end
 
+          def actual_expiration
+            fail 'until is not supported for SidekiqUniqueJobs'
+          end
+
           def value_matches?
             [true, :all].include?(@actual)
           end
@@ -73,6 +89,10 @@ def actual_interval
             @actual
           end
 
+          def actual_expiration
+            @klass.get_sidekiq_options['unique_until']
+          end
+
           def value_matches?
             @actual && @actual > 0
           end
diff --git a/spec/rspec/sidekiq/matchers/be_unique_spec.rb b/spec/rspec/sidekiq/matchers/be_unique_spec.rb
index b998d32..72f83d5 100644
--- a/spec/rspec/sidekiq/matchers/be_unique_spec.rb
+++ b/spec/rspec/sidekiq/matchers/be_unique_spec.rb
@@ -53,6 +53,57 @@
     include_context 'a unique worker'
   end
 
+  context '.until' do
+    let(:module_constant) { "Sidekiq::Enterprise" }
+    let(:expiration) { :success }
+    let(:interval) { 3.hours }
+    let(:sidekiq_options) { { unique_for: interval, unique_until: expiration } }
+    let(:worker) do
+      options = sidekiq_options
+      Class.new do
+        include ::Sidekiq::Worker
+        sidekiq_options options
+        def perform; end
+      end
+    end
+
+    before { stub_const(module_constant, true) }
+
+    subject do
+      stub_const('MuhWorker', worker)
+      MuhWorker
+    end
+
+    it { should be_unique.for(interval).until(:success) }
+
+    context 'errors' do
+      subject { expect(super()).to be_unique.until(:started) }
+
+      context 'when there is a mismatch' do
+        it do
+          expect { subject }.to raise_error RSpec::Expectations::ExpectationNotMetError,
+            'expected MuhWorker to be unique until started, but its unique_until was success'
+        end
+      end
+
+      context 'when not specified' do
+        let(:expiration) { nil }
+
+        it do
+          expect { subject }.to raise_error RSpec::Expectations::ExpectationNotMetError,
+            'expected MuhWorker to be unique until started, but its unique_until was not specified'
+        end
+      end
+
+      context 'when unique_until is not supported' do
+        let(:module_constant) { "SidekiqUniqueJobs" }
+        let(:sidekiq_options) { { unique: interval } }
+
+        it { expect { subject }.to raise_error 'until is not supported for SidekiqUniqueJobs' }
+      end
+    end
+  end
+
   context 'a sidekiq-unique-jobs scheduled worker' do
     let(:module_constant) { "SidekiqUniqueJobs" }
     before { @worker = create_worker unique: :all }