diff --git a/.simplecov b/.simplecov
index a1e3bd9..2b29bd2 100644
--- a/.simplecov
+++ b/.simplecov
@@ -2,7 +2,7 @@
 
 SimpleCov.start do
   enable_coverage :branch
-  minimum_coverage line: 95.17, branch: 85.13
+  minimum_coverage line: 100, branch: 100
   add_filter '/spec/'
   add_filter '/vendor/bundle/'
 end
diff --git a/lib/rubocop/cop/rspec_rails/http_status.rb b/lib/rubocop/cop/rspec_rails/http_status.rb
index 4a7766a..148f7be 100644
--- a/lib/rubocop/cop/rspec_rails/http_status.rb
+++ b/lib/rubocop/cop/rspec_rails/http_status.rb
@@ -102,6 +102,10 @@ def checker_class
             NumericStyleChecker
           when :be_status
             BeStatusStyleChecker
+          else
+            # :nocov:
+            :noop
+            # :nocov:
           end
         end
 
@@ -126,10 +130,6 @@ def message
             end
           end
 
-          def autocorrectable?
-            true
-          end
-
           def current
             offense_range.source
           end
diff --git a/lib/rubocop/cop/rspec_rails/inferred_spec_type.rb b/lib/rubocop/cop/rspec_rails/inferred_spec_type.rb
index 6eff7f0..d21f9e1 100644
--- a/lib/rubocop/cop/rspec_rails/inferred_spec_type.rb
+++ b/lib/rubocop/cop/rspec_rails/inferred_spec_type.rb
@@ -93,6 +93,7 @@ def autocorrect(corrector, node)
 
         # @param [RuboCop::AST::Node] node
         # @return [Parser::Source::Range]
+        # rubocop:disable Metrics/MethodLength
         def remove_range(node)
           if node.left_sibling
             node.source_range.with(
@@ -102,8 +103,13 @@ def remove_range(node)
             node.source_range.with(
               end_pos: node.right_sibling.source_range.begin_pos
             )
+          else
+            # :nocov:
+            :noop
+            # :nocov:
           end
         end
+        # rubocop:enable Metrics/MethodLength
 
         # @param [RuboCop::AST::PairNode] node
         # @return [RuboCop::AST::Node]
diff --git a/lib/rubocop/cop/rspec_rails/minitest_assertions.rb b/lib/rubocop/cop/rspec_rails/minitest_assertions.rb
index 7bdb220..05a5522 100644
--- a/lib/rubocop/cop/rspec_rails/minitest_assertions.rb
+++ b/lib/rubocop/cop/rspec_rails/minitest_assertions.rb
@@ -39,7 +39,9 @@ class BasicAssertion
           attr_reader :expected, :actual, :failure_message
 
           def self.minitest_assertion
+            # :nocov:
             raise NotImplementedError
+            # :nocov:
           end
 
           def initialize(expected, actual, failure_message)
@@ -62,7 +64,9 @@ def negated?(node)
           end
 
           def assertion
+            # :nocov:
             raise NotImplementedError
+            # :nocov:
           end
         end
 
diff --git a/lib/rubocop/cop/rspec_rails/negation_be_valid.rb b/lib/rubocop/cop/rspec_rails/negation_be_valid.rb
index 37dba08..c57b228 100644
--- a/lib/rubocop/cop/rspec_rails/negation_be_valid.rb
+++ b/lib/rubocop/cop/rspec_rails/negation_be_valid.rb
@@ -64,6 +64,10 @@ def offense?(node)
             be_invalid?(node)
           when :be_invalid
             not_to?(node)
+          else
+            # :nocov:
+            :noop
+            # :nocov:
           end
         end
 
@@ -81,6 +85,10 @@ def replaced_runner
             'not_to'
           when :be_invalid
             'to'
+          else
+            # :nocov:
+            :noop
+            # :nocov:
           end
         end
 
@@ -90,6 +98,10 @@ def replaced_matcher
             'be_valid'
           when :be_invalid
             'be_invalid'
+          else
+            # :nocov:
+            :noop
+            # :nocov:
           end
         end
       end
diff --git a/spec/rubocop/cop/rspec_rails/http_status_spec.rb b/spec/rubocop/cop/rspec_rails/http_status_spec.rb
index 2b8b988..0aabde8 100644
--- a/spec/rubocop/cop/rspec_rails/http_status_spec.rb
+++ b/spec/rubocop/cop/rspec_rails/http_status_spec.rb
@@ -89,6 +89,14 @@
 
       expect_no_corrections
     end
+
+    it 'registers no offense when Rack is not loaded' do
+      hide_const('Rack')
+
+      expect_no_offenses(<<~RUBY)
+        it { is_expected.to have_http_status(404) }
+      RUBY
+    end
   end
 
   context 'when EnforcedStyle is `numeric`' do
@@ -163,6 +171,14 @@
         RUBY
       end
     end
+
+    it 'registers no offense when Rack is not loaded' do
+      hide_const('Rack')
+
+      expect_no_offenses(<<~RUBY)
+        it { is_expected.to have_http_status(:not_found) }
+      RUBY
+    end
   end
 
   context 'when EnforcedStyle is `be_status`' do
@@ -287,5 +303,13 @@
         RUBY
       end
     end
+
+    it 'registers no offense when Rack is not loaded' do
+      hide_const('Rack')
+
+      expect_no_offenses(<<~RUBY)
+        it { is_expected.to have_http_status(:not_found) }
+      RUBY
+    end
   end
 end