diff --git a/lib/premailer/rails/css_loaders/network_loader.rb b/lib/premailer/rails/css_loaders/network_loader.rb
index 2ffa9e9..7359cd2 100644
--- a/lib/premailer/rails/css_loaders/network_loader.rb
+++ b/lib/premailer/rails/css_loaders/network_loader.rb
@@ -6,7 +6,10 @@ module NetworkLoader
 
         def load(url)
           uri = uri_for_url(url)
-          Net::HTTP.get(uri, { 'Accept' => 'text/css' }) if uri
+          if uri
+            response = Net::HTTP.get_response(uri, { 'Accept' => 'text/css' })
+            response.body if response.is_a?(Net::HTTPSuccess)
+          end
         end
 
         def uri_for_url(url)
diff --git a/spec/unit/css_loaders/network_loader_spec.rb b/spec/unit/css_loaders/network_loader_spec.rb
index 8fe1f79..b9b910c 100644
--- a/spec/unit/css_loaders/network_loader_spec.rb
+++ b/spec/unit/css_loaders/network_loader_spec.rb
@@ -55,4 +55,28 @@
       end
     end
   end
+
+  describe '#load' do
+    subject { described_class.load(url) }
+    let(:url) { 'https://example.com/style.css' }
+
+    context 'when resource exists' do
+      it 'returns the body' do
+        response = Net::HTTPSuccess.new('1.1', 200, nil)
+        allow(response).to receive(:body).and_return('BODY')
+        allow(Net::HTTP).to receive(:get_response).and_return(response)
+
+        expect(subject).to eq('BODY')
+      end
+    end
+
+    context 'when resource is not found' do
+      it 'returns the body' do
+        response = Net::HTTPNotFound.new('1.1', 404, 'Not Found')
+        allow(Net::HTTP).to receive(:get_response).and_return(response)
+
+        expect(subject).to be_nil
+      end
+    end
+  end
 end