diff --git a/lib/producer/core/remote/environment.rb b/lib/producer/core/remote/environment.rb
index 572924a..40e9ce2 100644
--- a/lib/producer/core/remote/environment.rb
+++ b/lib/producer/core/remote/environment.rb
@@ -15,7 +15,7 @@ module Producer
         require 'forwardable'
 
         extend Forwardable
-        def_delegator :@variables, :has_key?
+        def_delegator :@variables, :key?
 
         def initialize(variables)
           @variables = variables
diff --git a/lib/producer/core/tests/has_env.rb b/lib/producer/core/tests/has_env.rb
index fbdcc3f..bf18bc6 100644
--- a/lib/producer/core/tests/has_env.rb
+++ b/lib/producer/core/tests/has_env.rb
@@ -3,7 +3,7 @@ module Producer
     module Tests
       class HasEnv < Test
         def verify
-          env.remote.environment.has_key? arguments.first.to_s.upcase
+          env.remote.environment.key? arguments.first.to_s.upcase
         end
       end
     end
diff --git a/spec/producer/core/remote/environment_spec.rb b/spec/producer/core/remote/environment_spec.rb
index 4337dd4..8eea6de 100644
--- a/spec/producer/core/remote/environment_spec.rb
+++ b/spec/producer/core/remote/environment_spec.rb
@@ -33,13 +33,13 @@ module Producer::Core
       end
     end
 
-    describe '#has_key?' do
+    describe '#key?' do
       let(:key) { 'SOME_KEY' }
 
       it 'forwards the message to @variables' do
         expect(environment.instance_eval { @variables })
-          .to receive(:has_key?).with(key)
-        environment.has_key? key
+          .to receive(:key?).with(key)
+        environment.key? key
       end
     end
   end
diff --git a/spec/producer/core/tests/has_env_spec.rb b/spec/producer/core/tests/has_env_spec.rb
index dec0329..58ff1e0 100644
--- a/spec/producer/core/tests/has_env_spec.rb
+++ b/spec/producer/core/tests/has_env_spec.rb
@@ -18,22 +18,22 @@ module Producer::Core
       end
 
       it 'stringifies the queried variable name' do
-        expect(environment).to receive(:has_key?).with(kind_of(String))
+        expect(environment).to receive(:key?).with(kind_of(String))
         has_env.verify
       end
 
       it 'upcases the queried variable name' do
-        expect(environment).to receive(:has_key?).with('SOME_VARIABLE_NAME')
+        expect(environment).to receive(:key?).with('SOME_VARIABLE_NAME')
         has_env.verify
       end
 
       it 'returns true when remote environment var is defined' do
-        allow(environment).to receive(:has_key?) { true }
+        allow(environment).to receive(:key?) { true }
         expect(has_env.verify).to be true
       end
 
       it 'returns false when remote environment var is not defined' do
-        allow(environment).to receive(:has_key?) { false }
+        allow(environment).to receive(:key?) { false }
         expect(has_env.verify).to be false
       end
     end