diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9c1a60d56..aff74b82b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -15,6 +15,8 @@
 * [#874](https://github.com/toptal/chewy/pull/874): Fix `chewy:journal:clean` task for ruby 3.x. ([@muk-ai](https://github.com/muk-ai))
 * [#882](https://github.com/toptal/chewy/pull/882): Fix memory leak during `chewy:reset` for ruby 3.2 ([@konalegi](https://github.com/konalegi))
 
+* [#861](https://github.com/toptal/chewy/pull/861): Fix bug in mock_elasticsearch_response_sources ([@lafeber](https://github.com/lafeber))
+
 ## 7.3.0 (2023-04-03)
 
 ### New Features
diff --git a/lib/chewy/minitest/helpers.rb b/lib/chewy/minitest/helpers.rb
index 26ff95e3f..e9fbd1362 100644
--- a/lib/chewy/minitest/helpers.rb
+++ b/lib/chewy/minitest/helpers.rb
@@ -97,7 +97,7 @@ def mock_elasticsearch_response_sources(index, hits, &block)
               {
                 '_index' => index.index_name,
                 '_type' => '_doc',
-                '_id' => (i + 1).to_s,
+                '_id' => hit[:id] || (i + 1).to_s,
                 '_score' => 3.14,
                 '_source' => hit
               }
diff --git a/spec/chewy/minitest/helpers_spec.rb b/spec/chewy/minitest/helpers_spec.rb
index 98fd0f08e..41353b928 100644
--- a/spec/chewy/minitest/helpers_spec.rb
+++ b/spec/chewy/minitest/helpers_spec.rb
@@ -32,14 +32,14 @@ def assert_equal(expected, actual, message)
         {
           '_index' => 'dummies',
           '_type' => '_doc',
-          '_id' => '1',
+          '_id' => '2',
           '_score' => 3.14,
           '_source' => source
         }
       ]
     end
 
-    let(:source) { {'name' => 'some_name'} }
+    let(:source) { {'name' => 'some_name', id: '2'} }
     let(:sources) { [source] }
 
     context 'mocks by raw response' do