diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/DefaultGenerator.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/DefaultGenerator.java
index fe4d15461ffe..4219b8708d6e 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/DefaultGenerator.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/DefaultGenerator.java
@@ -22,6 +22,7 @@
 import io.swagger.v3.oas.models.Operation;
 import io.swagger.v3.oas.models.PathItem;
 import io.swagger.v3.oas.models.Paths;
+import io.swagger.v3.oas.models.SpecVersion;
 import io.swagger.v3.oas.models.info.Contact;
 import io.swagger.v3.oas.models.info.Info;
 import io.swagger.v3.oas.models.info.License;
@@ -343,6 +344,12 @@ private void configureOpenAPIInfo() {
             config.additionalProperties().put("unescapedAppDescription", info.getDescription());
         }
 
+        if (this.openAPI.getSpecVersion().equals(SpecVersion.V31) && !StringUtils.isEmpty(info.getSummary())) {
+            config.additionalProperties().put("appSummary", config.escapeText(info.getSummary()));
+            config.additionalProperties().put("appSummaryWithNewLines", config.escapeTextWhileAllowingNewLines(info.getSummary()));
+            config.additionalProperties().put("unescapedAppSummary", info.getSummary());
+        }
+
         if (info.getContact() != null) {
             Contact contact = info.getContact();
             if (contact.getEmail() != null) {