diff --git a/lib/gds_api/publishing_api.rb b/lib/gds_api/publishing_api.rb
index 7fa460b8..e7c71a0c 100644
--- a/lib/gds_api/publishing_api.rb
+++ b/lib/gds_api/publishing_api.rb
@@ -562,9 +562,9 @@ def get_schema(schema_name)
   #
   # @param query [String]
   #
-  # @return [Hash] A response with the result of the GraphQL query.
+  # @return [GdsApi::Response] A response with the result of the GraphQL query.
   def graphql_query(query)
-    post_json("#{endpoint}/graphql", query:).to_hash
+    post_json("#{endpoint}/graphql", query:)
   end
 
 private
diff --git a/test/test_helpers/publishing_api_test.rb b/test/test_helpers/publishing_api_test.rb
index 68085a7f..bcbb7a9e 100644
--- a/test/test_helpers/publishing_api_test.rb
+++ b/test/test_helpers/publishing_api_test.rb
@@ -632,7 +632,7 @@
 
       assert_equal(
         stubbed_response.to_json,
-        api_response.to_json,
+        api_response.raw_response_body,
       )
     end
   end