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 2737881bda1..c5557a92c47 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
@@ -488,7 +488,9 @@ public class TestBackwardsCompatibility extends LuceneTestCase {
       "7.5.0-cfs",
       "7.5.0-nocfs",
       "7.6.0-cfs",
-      "7.6.0-nocfs"
+      "7.6.0-nocfs",
+      "7.7.0-cfs",
+      "7.7.0-nocfs"
   };
 
   // TODO: on 6.0.0 release, gen the single segment indices and add here:
diff --git a/lucene/backward-codecs/src/test/org/apache/lucene/index/unsupported.7.7.0-cfs.zip b/lucene/backward-codecs/src/test/org/apache/lucene/index/unsupported.7.7.0-cfs.zip
new file mode 100644
index 00000000000..358ae9e12dd
Binary files /dev/null and b/lucene/backward-codecs/src/test/org/apache/lucene/index/unsupported.7.7.0-cfs.zip differ
diff --git a/lucene/backward-codecs/src/test/org/apache/lucene/index/unsupported.7.7.0-nocfs.zip b/lucene/backward-codecs/src/test/org/apache/lucene/index/unsupported.7.7.0-nocfs.zip
new file mode 100644
index 00000000000..a030f266926
Binary files /dev/null and b/lucene/backward-codecs/src/test/org/apache/lucene/index/unsupported.7.7.0-nocfs.zip differ