diff --git a/resources/checkstyle.xml b/resources/checkstyle.xml
index e16edf8b63..e1d491e456 100644
--- a/resources/checkstyle.xml
+++ b/resources/checkstyle.xml
@@ -57,7 +57,7 @@
         </module>
         <module name="IllegalImport">
             <!-- Avoid importing AutoValue shaded packages such as Guava -->
-            <property name="illegalPkgs" value="sun,autovalue"/>
+            <property name="illegalPkgs" value="sun,autovalue,org.testng.internal"/>
         </module>
         <module name="WhitespaceAfter">
             <!-- TYPECAST disabled -->