--- a/test/jdk/TEST.ROOT	Thu Dec 13 17:01:15 2018 +0100
+++ b/test/jdk/TEST.ROOT	Thu Dec 13 19:06:11 2018 +0100
@@ -49,7 +49,7 @@
     release.implementor
 
 # Minimum jtreg version
-requiredVersion=4.2 b12
+requiredVersion=4.2 b13
 
 # Path to libraries in the topmost test directory. This is needed so @library
 # does not need ../../ notation to reach them