diff --git a/modules/swagger-codegen/src/main/resources/Java/libraries/resttemplate/auth/HttpBasicAuth.mustache b/modules/swagger-codegen/src/main/resources/Java/libraries/resttemplate/auth/HttpBasicAuth.mustache
index 5f535b3698a..b0bde6fff65 100644
--- a/modules/swagger-codegen/src/main/resources/Java/libraries/resttemplate/auth/HttpBasicAuth.mustache
+++ b/modules/swagger-codegen/src/main/resources/Java/libraries/resttemplate/auth/HttpBasicAuth.mustache
@@ -4,7 +4,7 @@ import java.io.UnsupportedEncodingException;
 import java.nio.charset.StandardCharsets;
 
 import org.springframework.http.HttpHeaders;
-import org.springframework.util.Base64Utils;
+import java.util.Base64;
 import org.springframework.util.MultiValueMap;
 
 {{>generatedAnnotation}}
@@ -34,6 +34,6 @@ public class HttpBasicAuth implements Authentication {
             return;
         }
         String str = (username == null ? "" : username) + ":" + (password == null ? "" : password);
-        headerParams.add(HttpHeaders.AUTHORIZATION, "Basic " + Base64Utils.encodeToString(str.getBytes(StandardCharsets.UTF_8)));
+        headerParams.add(HttpHeaders.AUTHORIZATION, "Basic " + Base64.getEncoder().encodeToString(str.getBytes(StandardCharsets.UTF_8)));
     }
 }