diff --git a/Gemfile b/Gemfile
index 08d8ba0..5c1022a 100644
--- a/Gemfile
+++ b/Gemfile
@@ -11,4 +11,7 @@ gem 'rubocop', '1.44.1'
 
 gem 'simplecov', '~> 0.22.0'
 gem 'simplecov-lcov', '~> 0.8.0'
-gem 'redis', '>= 5.0.0'
\ No newline at end of file
+
+# added gems
+# gem 'pry'
+gem 'redis', '>= 5.0.0'
diff --git a/lib/mock_redis/set_methods.rb b/lib/mock_redis/set_methods.rb
index 6318c9a..7dbb6ea 100644
--- a/lib/mock_redis/set_methods.rb
+++ b/lib/mock_redis/set_methods.rb
@@ -119,13 +119,15 @@ def srandmember(key, count = nil)
     end
 
     def srem(key, members)
-      members = Array(members).map(&:to_s)
-
       with_set_at(key) do |s|
-        if members.size > 1 || redis_gem_v5?
-          size_after(s) { s.delete_if { |m| members.include?(m) } }
+        if members.is_a?(Array)
+          orig_size = s.size
+          members = members.map(&:to_s)
+          s.delete_if { |m| members.include?(m) }
+          orig_size - s.size
         else
-          !!s.delete?(members.first)
+          # !!s.delete?(members.to_s)
+          s.delete?(members.to_s) ? 1 : 0
         end
       end
     end
diff --git a/spec/commands/sadd_spec.rb b/spec/commands/sadd_spec.rb
index 696d3bb..2dc4cc3 100644
--- a/spec/commands/sadd_spec.rb
+++ b/spec/commands/sadd_spec.rb
@@ -4,13 +4,19 @@
   before { @key = 'mock-redis-test:sadd' }
 
   context 'sadd' do
-    it 'returns true if the set did not already contain member' do
-      expect(@redises.sadd(@key, 1)).to eq(true)
-    end
+    context "adapts to redis-rd version 4 and 5 outputs" do
+      include MockRedis::UtilityMethods
 
-    it 'returns false if the set did already contain member' do
-      @redises.sadd(@key, 1)
-      expect(@redises.sadd(@key, 1)).to eq(false)
+      let(:positive_response) { redis_gem_v5? ? 1 : true }
+      let(:negative_response) { redis_gem_v5? ? 0 : false }
+      it 'returns true if the set did not already contain member' do
+        expect(@redises.sadd(@key, 1)).to eq(positive_response)
+      end
+
+      it 'returns false if the set did already contain member' do
+        @redises.sadd(@key, 1)
+        expect(@redises.sadd(@key, 1)).to eq(negative_response)
+      end
     end
 
     it 'adds member to the set' do
diff --git a/spec/support/shared_examples/does_not_cleanup_empty_strings.rb b/spec/support/shared_examples/does_not_cleanup_empty_strings.rb
index cf14c5f..d8c627f 100644
--- a/spec/support/shared_examples/does_not_cleanup_empty_strings.rb
+++ b/spec/support/shared_examples/does_not_cleanup_empty_strings.rb
@@ -3,7 +3,7 @@
     key = 'mock-redis-test:not-a-string'
 
     method = method_from_description(example)
-    args = [key, args_for_method(method)]
+    args = args_for_method(method).unshift(key)
 
     @redises.set(key, '')
     expect do
diff --git a/spec/support/shared_examples/only_operates_on_sets.rb b/spec/support/shared_examples/only_operates_on_sets.rb
index d20d977..4c0f26b 100644
--- a/spec/support/shared_examples/only_operates_on_sets.rb
+++ b/spec/support/shared_examples/only_operates_on_sets.rb
@@ -3,7 +3,7 @@
     key = 'mock-redis-test:set-only'
 
     method = method_from_description(example)
-    args = [key, args_for_method(method)]
+    args = args_for_method(method).unshift(key)
 
     @redises.set(key, 1)
     expect do