--- old/src/java.security.jgss/share/classes/sun/security/jgss/krb5/Krb5Context.java	2019-09-23 17:10:24.036454680 -0700
+++ new/src/java.security.jgss/share/classes/sun/security/jgss/krb5/Krb5Context.java	2019-09-23 17:10:23.848454680 -0700
@@ -1391,6 +1391,7 @@
     static class KerberosSessionKey implements Key {
         private static final long serialVersionUID = 699307378954123869L;
 
+        @SuppressWarnings("serial") // Not statically typed as Serializable
         private final EncryptionKey key;
 
         KerberosSessionKey(EncryptionKey key) {