diff --git a/Gemfile b/Gemfile
index f095a60..fbef39b 100644
--- a/Gemfile
+++ b/Gemfile
@@ -6,13 +6,13 @@ gemspec
 # Run all pre-commit hooks via Overcommit during CI runs
 gem 'overcommit', '0.61.0'
 
+# Pin redis-rb version since v5 introduced breaking changes
+gem 'redis', '>= 5.0.0'
 # Pin tool versions (which are executed by Overcommit) for CI builds
 gem 'rubocop', '1.44.1'
 
 gem 'simplecov', '~> 0.22.0'
 gem 'simplecov-lcov', '~> 0.8.0'
-gem 'redis', '>= 5.0.0'
 
 # TODO: gems added for development, remove before merge
 # gem 'pry'
-
diff --git a/lib/mock_redis/utility_methods.rb b/lib/mock_redis/utility_methods.rb
index 037999b..0a9d439 100644
--- a/lib/mock_redis/utility_methods.rb
+++ b/lib/mock_redis/utility_methods.rb
@@ -79,7 +79,7 @@ def redis_gem_v5?
       Redis::VERSION.to_i == 5
     end
 
-    def size_after(obj, &blk)
+    def size_after(obj, &_blk)
       size_before = obj.size
       yield
       (obj.size - size_before).abs
diff --git a/spec/commands/sadd_spec.rb b/spec/commands/sadd_spec.rb
index 2dc4cc3..4819dfb 100644
--- a/spec/commands/sadd_spec.rb
+++ b/spec/commands/sadd_spec.rb
@@ -4,7 +4,7 @@
   before { @key = 'mock-redis-test:sadd' }
 
   context 'sadd' do
-    context "adapts to redis-rd version 4 and 5 outputs" do
+    context 'adapts to redis-rd version 4 and 5 outputs' do
       include MockRedis::UtilityMethods
 
       let(:positive_response) { redis_gem_v5? ? 1 : true }
diff --git a/spec/commands/srem_spec.rb b/spec/commands/srem_spec.rb
index 598cebc..51a7f02 100644
--- a/spec/commands/srem_spec.rb
+++ b/spec/commands/srem_spec.rb
@@ -8,7 +8,7 @@
     @redises.sadd(@key, 'ernie')
   end
 
-  context "adapts to redis-rd version 4 and 5 outputs" do
+  context 'adapts to redis-rd version 4 and 5 outputs' do
     include MockRedis::UtilityMethods
 
     let(:positive_response) { redis_gem_v5? ? 1 : true }