diff -r 14592d2b2795 src/jdk.jlink/share/classes/jdk/tools/jlink/internal/JlinkTask.java
--- a/src/jdk.jlink/share/classes/jdk/tools/jlink/internal/JlinkTask.java	Wed Apr 29 08:38:28 2020 +0100
+++ b/src/jdk.jlink/share/classes/jdk/tools/jlink/internal/JlinkTask.java	Wed Apr 29 10:02:14 2020 +0100
@@ -760,6 +760,7 @@
                 .orElse(Runtime.version());
 
             this.archives = modsPaths.entrySet().stream()
+                                .sorted(Map.Entry.comparingByKey())
                                 .map(e -> newArchive(e.getKey(), e.getValue()))
                                 .collect(Collectors.toSet());
         }