diff --git a/lucene/backward-codecs/src/test/org/apache/lucene/index/TestBackwardsCompatibility.java b/lucene/backward-codecs/src/test/org/apache/lucene/index/TestBackwardsCompatibility.java
index 6121bca6e5c..8e04143a4f0 100644
--- a/lucene/backward-codecs/src/test/org/apache/lucene/index/TestBackwardsCompatibility.java
+++ b/lucene/backward-codecs/src/test/org/apache/lucene/index/TestBackwardsCompatibility.java
@@ -235,7 +235,9 @@ public class TestBackwardsCompatibility extends LuceneTestCase {
       "5.4.1-cfs",
       "5.4.1-nocfs",
       "5.5.0-cfs",
-      "5.5.0-nocfs"
+      "5.5.0-nocfs",
+      "6.0.0-cfs",
+      "6.0.0-nocfs"
   };
   
   final String[] unsupportedNames = {
diff --git a/lucene/backward-codecs/src/test/org/apache/lucene/index/index.6.0.0-cfs.zip b/lucene/backward-codecs/src/test/org/apache/lucene/index/index.6.0.0-cfs.zip
new file mode 100644
index 00000000000..29939705f00
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diff --git a/lucene/backward-codecs/src/test/org/apache/lucene/index/index.6.0.0-nocfs.zip b/lucene/backward-codecs/src/test/org/apache/lucene/index/index.6.0.0-nocfs.zip
new file mode 100644
index 00000000000..55b5cc1d104
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