diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/InlineModelResolver.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/InlineModelResolver.java
index 30ac18c43e35..40ab769081de 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/InlineModelResolver.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/InlineModelResolver.java
@@ -472,14 +472,22 @@ private void flattenComponents(OpenAPI openAPI) {
      * @param m Schema implementation
      */
     private void fixStringModel(Schema m) {
-        if (m.getType() != null && m.getType().equals("string") && m.getExample() != null) {
+        if (schemaIsOfType(m, "string") && schemaContainsExample(m)) {
             String example = m.getExample().toString();
-            if (example.substring(0, 1).equals("\"") && example.substring(example.length() - 1).equals("\"")) {
+            if (example.startsWith("\"") && example.endsWith("\"")) {
                 m.setExample(example.substring(1, example.length() - 1));
             }
         }
     }
 
+    private boolean schemaIsOfType(Schema m, String type) {
+        return m.getType() != null && m.getType().equals(type);
+    }
+
+    private boolean schemaContainsExample(Schema m) {
+        return m.getExample() != null && m.getExample() != "";
+    }
+
     /**
      * Generates a unique model name. Non-alphanumeric characters will be replaced
      * with underscores
diff --git a/modules/openapi-generator/src/test/java/org/openapitools/codegen/InlineModelResolverTest.java b/modules/openapi-generator/src/test/java/org/openapitools/codegen/InlineModelResolverTest.java
index e612f985de3c..2ebc0d52143d 100644
--- a/modules/openapi-generator/src/test/java/org/openapitools/codegen/InlineModelResolverTest.java
+++ b/modules/openapi-generator/src/test/java/org/openapitools/codegen/InlineModelResolverTest.java
@@ -28,6 +28,7 @@
 import io.swagger.v3.oas.models.responses.ApiResponses;
 import io.swagger.v3.parser.core.models.ParseOptions;
 import org.openapitools.codegen.utils.ModelUtils;
+import org.testng.Assert;
 import org.testng.annotations.Test;
 
 import java.util.HashMap;
@@ -927,7 +928,7 @@ public void emptyExampleOnStringTypeModels() {
         assertEquals("#/components/schemas/EmptyExampleOnStringTypeModels", schema.getItems().get$ref());
 
         assertTrue(ModelUtils.getReferencedSchema(openAPI, schema.getItems()) instanceof StringSchema);
-        assertNull(ModelUtils.getReferencedSchema(openAPI, schema.getItems()).getExample());
+        Assert.assertSame(ModelUtils.getReferencedSchema(openAPI, schema.getItems()).getExample(), "");
     }
 
     @Test
diff --git a/pom.xml b/pom.xml
index 79ff6da7d47b..2359a785cf57 100644
--- a/pom.xml
+++ b/pom.xml
@@ -1516,7 +1516,7 @@
         <maven.compiler.target>1.8</maven.compiler.target>
         <swagger-core-version>2.1.2</swagger-core-version>
         <swagger-parser-groupid>io.swagger.parser.v3</swagger-parser-groupid>
-        <swagger-parser-version>2.0.20</swagger-parser-version>
+        <swagger-parser-version>2.0.22</swagger-parser-version>
         <felix-version>3.3.1</felix-version>
         <commons-io-version>2.4</commons-io-version>
         <commons-cli-version>1.2</commons-cli-version>
diff --git a/samples/client/petstore/go/go-petstore/api/openapi.yaml b/samples/client/petstore/go/go-petstore/api/openapi.yaml
index 2fe0565e0a54..4c7dda7a3b82 100644
--- a/samples/client/petstore/go/go-petstore/api/openapi.yaml
+++ b/samples/client/petstore/go/go-petstore/api/openapi.yaml
@@ -2126,3 +2126,4 @@ components:
     http_basic_test:
       scheme: basic
       type: http
+x-original-swagger-version: "2.0"
diff --git a/samples/client/petstore/haskell-http-client/openapi.yaml b/samples/client/petstore/haskell-http-client/openapi.yaml
index 2fe0565e0a54..4c7dda7a3b82 100644
--- a/samples/client/petstore/haskell-http-client/openapi.yaml
+++ b/samples/client/petstore/haskell-http-client/openapi.yaml
@@ -2126,3 +2126,4 @@ components:
     http_basic_test:
       scheme: basic
       type: http
+x-original-swagger-version: "2.0"
diff --git a/samples/client/petstore/java/feign-no-nullable/api/openapi.yaml b/samples/client/petstore/java/feign-no-nullable/api/openapi.yaml
index 00cc0f2f4c26..0b3ef3a11c93 100644
--- a/samples/client/petstore/java/feign-no-nullable/api/openapi.yaml
+++ b/samples/client/petstore/java/feign-no-nullable/api/openapi.yaml
@@ -2187,4 +2187,5 @@ components:
     http_basic_test:
       scheme: basic
       type: http
+x-original-swagger-version: "2.0"
 
diff --git a/samples/client/petstore/java/feign/api/openapi.yaml b/samples/client/petstore/java/feign/api/openapi.yaml
index 00cc0f2f4c26..0b3ef3a11c93 100644
--- a/samples/client/petstore/java/feign/api/openapi.yaml
+++ b/samples/client/petstore/java/feign/api/openapi.yaml
@@ -2187,4 +2187,5 @@ components:
     http_basic_test:
       scheme: basic
       type: http
+x-original-swagger-version: "2.0"
 
diff --git a/samples/client/petstore/java/google-api-client/api/openapi.yaml b/samples/client/petstore/java/google-api-client/api/openapi.yaml
index 00cc0f2f4c26..0b3ef3a11c93 100644
--- a/samples/client/petstore/java/google-api-client/api/openapi.yaml
+++ b/samples/client/petstore/java/google-api-client/api/openapi.yaml
@@ -2187,4 +2187,5 @@ components:
     http_basic_test:
       scheme: basic
       type: http
+x-original-swagger-version: "2.0"
 
diff --git a/samples/client/petstore/java/jersey1/api/openapi.yaml b/samples/client/petstore/java/jersey1/api/openapi.yaml
index 00cc0f2f4c26..0b3ef3a11c93 100644
--- a/samples/client/petstore/java/jersey1/api/openapi.yaml
+++ b/samples/client/petstore/java/jersey1/api/openapi.yaml
@@ -2187,4 +2187,5 @@ components:
     http_basic_test:
       scheme: basic
       type: http
+x-original-swagger-version: "2.0"
 
diff --git a/samples/client/petstore/java/jersey2-java8/api/openapi.yaml b/samples/client/petstore/java/jersey2-java8/api/openapi.yaml
index 00cc0f2f4c26..0b3ef3a11c93 100644
--- a/samples/client/petstore/java/jersey2-java8/api/openapi.yaml
+++ b/samples/client/petstore/java/jersey2-java8/api/openapi.yaml
@@ -2187,4 +2187,5 @@ components:
     http_basic_test:
       scheme: basic
       type: http
+x-original-swagger-version: "2.0"
 
diff --git a/samples/client/petstore/java/native-async/api/openapi.yaml b/samples/client/petstore/java/native-async/api/openapi.yaml
index 00cc0f2f4c26..0b3ef3a11c93 100644
--- a/samples/client/petstore/java/native-async/api/openapi.yaml
+++ b/samples/client/petstore/java/native-async/api/openapi.yaml
@@ -2187,4 +2187,5 @@ components:
     http_basic_test:
       scheme: basic
       type: http
+x-original-swagger-version: "2.0"
 
diff --git a/samples/client/petstore/java/native/api/openapi.yaml b/samples/client/petstore/java/native/api/openapi.yaml
index 00cc0f2f4c26..0b3ef3a11c93 100644
--- a/samples/client/petstore/java/native/api/openapi.yaml
+++ b/samples/client/petstore/java/native/api/openapi.yaml
@@ -2187,4 +2187,5 @@ components:
     http_basic_test:
       scheme: basic
       type: http
+x-original-swagger-version: "2.0"
 
diff --git a/samples/client/petstore/java/okhttp-gson-parcelableModel/api/openapi.yaml b/samples/client/petstore/java/okhttp-gson-parcelableModel/api/openapi.yaml
index 00cc0f2f4c26..0b3ef3a11c93 100644
--- a/samples/client/petstore/java/okhttp-gson-parcelableModel/api/openapi.yaml
+++ b/samples/client/petstore/java/okhttp-gson-parcelableModel/api/openapi.yaml
@@ -2187,4 +2187,5 @@ components:
     http_basic_test:
       scheme: basic
       type: http
+x-original-swagger-version: "2.0"
 
diff --git a/samples/client/petstore/java/okhttp-gson/api/openapi.yaml b/samples/client/petstore/java/okhttp-gson/api/openapi.yaml
index 00cc0f2f4c26..0b3ef3a11c93 100644
--- a/samples/client/petstore/java/okhttp-gson/api/openapi.yaml
+++ b/samples/client/petstore/java/okhttp-gson/api/openapi.yaml
@@ -2187,4 +2187,5 @@ components:
     http_basic_test:
       scheme: basic
       type: http
+x-original-swagger-version: "2.0"
 
diff --git a/samples/client/petstore/java/rest-assured-jackson/api/openapi.yaml b/samples/client/petstore/java/rest-assured-jackson/api/openapi.yaml
index 00cc0f2f4c26..0b3ef3a11c93 100644
--- a/samples/client/petstore/java/rest-assured-jackson/api/openapi.yaml
+++ b/samples/client/petstore/java/rest-assured-jackson/api/openapi.yaml
@@ -2187,4 +2187,5 @@ components:
     http_basic_test:
       scheme: basic
       type: http
+x-original-swagger-version: "2.0"
 
diff --git a/samples/client/petstore/java/rest-assured/api/openapi.yaml b/samples/client/petstore/java/rest-assured/api/openapi.yaml
index 00cc0f2f4c26..0b3ef3a11c93 100644
--- a/samples/client/petstore/java/rest-assured/api/openapi.yaml
+++ b/samples/client/petstore/java/rest-assured/api/openapi.yaml
@@ -2187,4 +2187,5 @@ components:
     http_basic_test:
       scheme: basic
       type: http
+x-original-swagger-version: "2.0"
 
diff --git a/samples/client/petstore/java/resteasy/api/openapi.yaml b/samples/client/petstore/java/resteasy/api/openapi.yaml
index 00cc0f2f4c26..0b3ef3a11c93 100644
--- a/samples/client/petstore/java/resteasy/api/openapi.yaml
+++ b/samples/client/petstore/java/resteasy/api/openapi.yaml
@@ -2187,4 +2187,5 @@ components:
     http_basic_test:
       scheme: basic
       type: http
+x-original-swagger-version: "2.0"
 
diff --git a/samples/client/petstore/java/resttemplate-withXml/api/openapi.yaml b/samples/client/petstore/java/resttemplate-withXml/api/openapi.yaml
index 00cc0f2f4c26..0b3ef3a11c93 100644
--- a/samples/client/petstore/java/resttemplate-withXml/api/openapi.yaml
+++ b/samples/client/petstore/java/resttemplate-withXml/api/openapi.yaml
@@ -2187,4 +2187,5 @@ components:
     http_basic_test:
       scheme: basic
       type: http
+x-original-swagger-version: "2.0"
 
diff --git a/samples/client/petstore/java/resttemplate/api/openapi.yaml b/samples/client/petstore/java/resttemplate/api/openapi.yaml
index 00cc0f2f4c26..0b3ef3a11c93 100644
--- a/samples/client/petstore/java/resttemplate/api/openapi.yaml
+++ b/samples/client/petstore/java/resttemplate/api/openapi.yaml
@@ -2187,4 +2187,5 @@ components:
     http_basic_test:
       scheme: basic
       type: http
+x-original-swagger-version: "2.0"
 
diff --git a/samples/client/petstore/java/retrofit2-play26/api/openapi.yaml b/samples/client/petstore/java/retrofit2-play26/api/openapi.yaml
index 00cc0f2f4c26..0b3ef3a11c93 100644
--- a/samples/client/petstore/java/retrofit2-play26/api/openapi.yaml
+++ b/samples/client/petstore/java/retrofit2-play26/api/openapi.yaml
@@ -2187,4 +2187,5 @@ components:
     http_basic_test:
       scheme: basic
       type: http
+x-original-swagger-version: "2.0"
 
diff --git a/samples/client/petstore/java/retrofit2/api/openapi.yaml b/samples/client/petstore/java/retrofit2/api/openapi.yaml
index 00cc0f2f4c26..0b3ef3a11c93 100644
--- a/samples/client/petstore/java/retrofit2/api/openapi.yaml
+++ b/samples/client/petstore/java/retrofit2/api/openapi.yaml
@@ -2187,4 +2187,5 @@ components:
     http_basic_test:
       scheme: basic
       type: http
+x-original-swagger-version: "2.0"
 
diff --git a/samples/client/petstore/java/retrofit2rx2/api/openapi.yaml b/samples/client/petstore/java/retrofit2rx2/api/openapi.yaml
index 00cc0f2f4c26..0b3ef3a11c93 100644
--- a/samples/client/petstore/java/retrofit2rx2/api/openapi.yaml
+++ b/samples/client/petstore/java/retrofit2rx2/api/openapi.yaml
@@ -2187,4 +2187,5 @@ components:
     http_basic_test:
       scheme: basic
       type: http
+x-original-swagger-version: "2.0"
 
diff --git a/samples/client/petstore/java/retrofit2rx3/api/openapi.yaml b/samples/client/petstore/java/retrofit2rx3/api/openapi.yaml
index 00cc0f2f4c26..0b3ef3a11c93 100644
--- a/samples/client/petstore/java/retrofit2rx3/api/openapi.yaml
+++ b/samples/client/petstore/java/retrofit2rx3/api/openapi.yaml
@@ -2187,4 +2187,5 @@ components:
     http_basic_test:
       scheme: basic
       type: http
+x-original-swagger-version: "2.0"
 
diff --git a/samples/client/petstore/java/vertx-no-nullable/api/openapi.yaml b/samples/client/petstore/java/vertx-no-nullable/api/openapi.yaml
index 00cc0f2f4c26..0b3ef3a11c93 100644
--- a/samples/client/petstore/java/vertx-no-nullable/api/openapi.yaml
+++ b/samples/client/petstore/java/vertx-no-nullable/api/openapi.yaml
@@ -2187,4 +2187,5 @@ components:
     http_basic_test:
       scheme: basic
       type: http
+x-original-swagger-version: "2.0"
 
diff --git a/samples/client/petstore/java/vertx/api/openapi.yaml b/samples/client/petstore/java/vertx/api/openapi.yaml
index 00cc0f2f4c26..0b3ef3a11c93 100644
--- a/samples/client/petstore/java/vertx/api/openapi.yaml
+++ b/samples/client/petstore/java/vertx/api/openapi.yaml
@@ -2187,4 +2187,5 @@ components:
     http_basic_test:
       scheme: basic
       type: http
+x-original-swagger-version: "2.0"
 
diff --git a/samples/client/petstore/java/webclient/api/openapi.yaml b/samples/client/petstore/java/webclient/api/openapi.yaml
index 00cc0f2f4c26..0b3ef3a11c93 100644
--- a/samples/client/petstore/java/webclient/api/openapi.yaml
+++ b/samples/client/petstore/java/webclient/api/openapi.yaml
@@ -2187,4 +2187,5 @@ components:
     http_basic_test:
       scheme: basic
       type: http
+x-original-swagger-version: "2.0"
 
diff --git a/samples/server/petstore/java-play-framework-api-package-override/public/openapi.json b/samples/server/petstore/java-play-framework-api-package-override/public/openapi.json
index 1a863721712a..e1554af7b8ff 100644
--- a/samples/server/petstore/java-play-framework-api-package-override/public/openapi.json
+++ b/samples/server/petstore/java-play-framework-api-package-override/public/openapi.json
@@ -1037,5 +1037,6 @@
         "type" : "apiKey"
       }
     }
-  }
+  },
+  "x-original-swagger-version" : "2.0"
 }
\ No newline at end of file
diff --git a/samples/server/petstore/java-play-framework-async/public/openapi.json b/samples/server/petstore/java-play-framework-async/public/openapi.json
index 1a863721712a..e1554af7b8ff 100644
--- a/samples/server/petstore/java-play-framework-async/public/openapi.json
+++ b/samples/server/petstore/java-play-framework-async/public/openapi.json
@@ -1037,5 +1037,6 @@
         "type" : "apiKey"
       }
     }
-  }
+  },
+  "x-original-swagger-version" : "2.0"
 }
\ No newline at end of file
diff --git a/samples/server/petstore/java-play-framework-controller-only/public/openapi.json b/samples/server/petstore/java-play-framework-controller-only/public/openapi.json
index 1a863721712a..e1554af7b8ff 100644
--- a/samples/server/petstore/java-play-framework-controller-only/public/openapi.json
+++ b/samples/server/petstore/java-play-framework-controller-only/public/openapi.json
@@ -1037,5 +1037,6 @@
         "type" : "apiKey"
       }
     }
-  }
+  },
+  "x-original-swagger-version" : "2.0"
 }
\ No newline at end of file
diff --git a/samples/server/petstore/java-play-framework-fake-endpoints/public/openapi.json b/samples/server/petstore/java-play-framework-fake-endpoints/public/openapi.json
index f5f2da4a9437..25825c7a17da 100644
--- a/samples/server/petstore/java-play-framework-fake-endpoints/public/openapi.json
+++ b/samples/server/petstore/java-play-framework-fake-endpoints/public/openapi.json
@@ -2880,5 +2880,6 @@
         "type" : "http"
       }
     }
-  }
+  },
+  "x-original-swagger-version" : "2.0"
 }
\ No newline at end of file
diff --git a/samples/server/petstore/java-play-framework-no-bean-validation/public/openapi.json b/samples/server/petstore/java-play-framework-no-bean-validation/public/openapi.json
index 1a863721712a..e1554af7b8ff 100644
--- a/samples/server/petstore/java-play-framework-no-bean-validation/public/openapi.json
+++ b/samples/server/petstore/java-play-framework-no-bean-validation/public/openapi.json
@@ -1037,5 +1037,6 @@
         "type" : "apiKey"
       }
     }
-  }
+  },
+  "x-original-swagger-version" : "2.0"
 }
\ No newline at end of file
diff --git a/samples/server/petstore/java-play-framework-no-exception-handling/public/openapi.json b/samples/server/petstore/java-play-framework-no-exception-handling/public/openapi.json
index 1a863721712a..e1554af7b8ff 100644
--- a/samples/server/petstore/java-play-framework-no-exception-handling/public/openapi.json
+++ b/samples/server/petstore/java-play-framework-no-exception-handling/public/openapi.json
@@ -1037,5 +1037,6 @@
         "type" : "apiKey"
       }
     }
-  }
+  },
+  "x-original-swagger-version" : "2.0"
 }
\ No newline at end of file
diff --git a/samples/server/petstore/java-play-framework-no-interface/public/openapi.json b/samples/server/petstore/java-play-framework-no-interface/public/openapi.json
index 1a863721712a..e1554af7b8ff 100644
--- a/samples/server/petstore/java-play-framework-no-interface/public/openapi.json
+++ b/samples/server/petstore/java-play-framework-no-interface/public/openapi.json
@@ -1037,5 +1037,6 @@
         "type" : "apiKey"
       }
     }
-  }
+  },
+  "x-original-swagger-version" : "2.0"
 }
\ No newline at end of file
diff --git a/samples/server/petstore/java-play-framework-no-nullable/public/openapi.json b/samples/server/petstore/java-play-framework-no-nullable/public/openapi.json
index 1a863721712a..e1554af7b8ff 100644
--- a/samples/server/petstore/java-play-framework-no-nullable/public/openapi.json
+++ b/samples/server/petstore/java-play-framework-no-nullable/public/openapi.json
@@ -1037,5 +1037,6 @@
         "type" : "apiKey"
       }
     }
-  }
+  },
+  "x-original-swagger-version" : "2.0"
 }
\ No newline at end of file
diff --git a/samples/server/petstore/java-play-framework-no-wrap-calls/public/openapi.json b/samples/server/petstore/java-play-framework-no-wrap-calls/public/openapi.json
index 1a863721712a..e1554af7b8ff 100644
--- a/samples/server/petstore/java-play-framework-no-wrap-calls/public/openapi.json
+++ b/samples/server/petstore/java-play-framework-no-wrap-calls/public/openapi.json
@@ -1037,5 +1037,6 @@
         "type" : "apiKey"
       }
     }
-  }
+  },
+  "x-original-swagger-version" : "2.0"
 }
\ No newline at end of file
diff --git a/samples/server/petstore/java-play-framework/public/openapi.json b/samples/server/petstore/java-play-framework/public/openapi.json
index 1a863721712a..e1554af7b8ff 100644
--- a/samples/server/petstore/java-play-framework/public/openapi.json
+++ b/samples/server/petstore/java-play-framework/public/openapi.json
@@ -1037,5 +1037,6 @@
         "type" : "apiKey"
       }
     }
-  }
+  },
+  "x-original-swagger-version" : "2.0"
 }
\ No newline at end of file
diff --git a/samples/server/petstore/jaxrs-spec-interface/src/main/openapi/openapi.yaml b/samples/server/petstore/jaxrs-spec-interface/src/main/openapi/openapi.yaml
index 7d1bd12ec826..7d2de524fc6e 100644
--- a/samples/server/petstore/jaxrs-spec-interface/src/main/openapi/openapi.yaml
+++ b/samples/server/petstore/jaxrs-spec-interface/src/main/openapi/openapi.yaml
@@ -2261,3 +2261,4 @@ components:
     http_basic_test:
       scheme: basic
       type: http
+x-original-swagger-version: "2.0"
diff --git a/samples/server/petstore/jaxrs-spec/src/main/openapi/openapi.yaml b/samples/server/petstore/jaxrs-spec/src/main/openapi/openapi.yaml
index 7d1bd12ec826..7d2de524fc6e 100644
--- a/samples/server/petstore/jaxrs-spec/src/main/openapi/openapi.yaml
+++ b/samples/server/petstore/jaxrs-spec/src/main/openapi/openapi.yaml
@@ -2261,3 +2261,4 @@ components:
     http_basic_test:
       scheme: basic
       type: http
+x-original-swagger-version: "2.0"
diff --git a/samples/server/petstore/python-aiohttp-srclayout/src/openapi_server/openapi/openapi.yaml b/samples/server/petstore/python-aiohttp-srclayout/src/openapi_server/openapi/openapi.yaml
index 030b84f7402c..1e68be278ed1 100644
--- a/samples/server/petstore/python-aiohttp-srclayout/src/openapi_server/openapi/openapi.yaml
+++ b/samples/server/petstore/python-aiohttp-srclayout/src/openapi_server/openapi/openapi.yaml
@@ -794,3 +794,4 @@ components:
       name: api_key
       type: apiKey
       x-apikeyInfoFunc: openapi_server.controllers.security_controller_.info_from_api_key
+x-original-swagger-version: "2.0"
diff --git a/samples/server/petstore/python-aiohttp/openapi_server/openapi/openapi.yaml b/samples/server/petstore/python-aiohttp/openapi_server/openapi/openapi.yaml
index 030b84f7402c..1e68be278ed1 100644
--- a/samples/server/petstore/python-aiohttp/openapi_server/openapi/openapi.yaml
+++ b/samples/server/petstore/python-aiohttp/openapi_server/openapi/openapi.yaml
@@ -794,3 +794,4 @@ components:
       name: api_key
       type: apiKey
       x-apikeyInfoFunc: openapi_server.controllers.security_controller_.info_from_api_key
+x-original-swagger-version: "2.0"
diff --git a/samples/server/petstore/python-flask/openapi_server/openapi/openapi.yaml b/samples/server/petstore/python-flask/openapi_server/openapi/openapi.yaml
index 69c15a8f11a3..0edb89eac95b 100644
--- a/samples/server/petstore/python-flask/openapi_server/openapi/openapi.yaml
+++ b/samples/server/petstore/python-flask/openapi_server/openapi/openapi.yaml
@@ -783,3 +783,4 @@ components:
       name: api_key
       type: apiKey
       x-apikeyInfoFunc: openapi_server.controllers.security_controller_.info_from_api_key
+x-original-swagger-version: "2.0"
diff --git a/samples/server/petstore/rust-server/output/petstore-with-fake-endpoints-models-for-testing/api/openapi.yaml b/samples/server/petstore/rust-server/output/petstore-with-fake-endpoints-models-for-testing/api/openapi.yaml
index 02f3dc603a4b..0885080f5fdc 100644
--- a/samples/server/petstore/rust-server/output/petstore-with-fake-endpoints-models-for-testing/api/openapi.yaml
+++ b/samples/server/petstore/rust-server/output/petstore-with-fake-endpoints-models-for-testing/api/openapi.yaml
@@ -1591,4 +1591,5 @@ components:
     http_basic_test:
       scheme: basic
       type: http
+x-original-swagger-version: "2.0"
 
diff --git a/samples/server/petstore/rust-server/output/rust-server-test/api/openapi.yaml b/samples/server/petstore/rust-server/output/rust-server-test/api/openapi.yaml
index 59a9a76b8877..e7cef9a3cf2a 100644
--- a/samples/server/petstore/rust-server/output/rust-server-test/api/openapi.yaml
+++ b/samples/server/petstore/rust-server/output/rust-server-test/api/openapi.yaml
@@ -212,4 +212,5 @@ components:
       required:
       - required_thing
       type: object
+x-original-swagger-version: "2.0"
 
diff --git a/samples/server/petstore/springboot-reactive/src/main/resources/openapi.yaml b/samples/server/petstore/springboot-reactive/src/main/resources/openapi.yaml
index 7d1bd12ec826..7d2de524fc6e 100644
--- a/samples/server/petstore/springboot-reactive/src/main/resources/openapi.yaml
+++ b/samples/server/petstore/springboot-reactive/src/main/resources/openapi.yaml
@@ -2261,3 +2261,4 @@ components:
     http_basic_test:
       scheme: basic
       type: http
+x-original-swagger-version: "2.0"