diff --git a/samples/server/petstore/springboot-petstore-with-api-response-examples/src/main/java/org/openapitools/model/Order.java b/samples/server/petstore/springboot-petstore-with-api-response-examples/src/main/java/org/openapitools/model/Order.java
index 72ad748e48a..c0b05835f45 100644
--- a/samples/server/petstore/springboot-petstore-with-api-response-examples/src/main/java/org/openapitools/model/Order.java
+++ b/samples/server/petstore/springboot-petstore-with-api-response-examples/src/main/java/org/openapitools/model/Order.java
@@ -45,7 +45,7 @@ public class Order {
     
     DELIVERED("delivered");
 
-    private String value;
+    private final String value;
 
     StatusEnum(String value) {
       this.value = value;
diff --git a/samples/server/petstore/springboot-petstore-with-api-response-examples/src/main/java/org/openapitools/model/Pet.java b/samples/server/petstore/springboot-petstore-with-api-response-examples/src/main/java/org/openapitools/model/Pet.java
index fb814bbb808..c9a1c172998 100644
--- a/samples/server/petstore/springboot-petstore-with-api-response-examples/src/main/java/org/openapitools/model/Pet.java
+++ b/samples/server/petstore/springboot-petstore-with-api-response-examples/src/main/java/org/openapitools/model/Pet.java
@@ -51,7 +51,7 @@ public class Pet {
     
     SOLD("sold");
 
-    private String value;
+    private final String value;
 
     StatusEnum(String value) {
       this.value = value;