diff --git a/lucene/tools/junit4/solr-tests.policy b/lucene/tools/junit4/solr-tests.policy
index 4d60f13ddeb..88beda03dbd 100644
--- a/lucene/tools/junit4/solr-tests.policy
+++ b/lucene/tools/junit4/solr-tests.policy
@@ -141,6 +141,7 @@ grant {
   permission javax.security.auth.AuthPermission "getLoginConfiguration";
   permission javax.security.auth.AuthPermission "setLoginConfiguration";
   permission javax.security.auth.AuthPermission "modifyPrivateCredentials";
+  permission javax.security.auth.AuthPermission "modifyPublicCredentials";
   permission javax.security.auth.PrivateCredentialPermission "org.apache.hadoop.security.Credentials * \"*\"", "read";
 
   // needed by hadoop security