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 ae45eb7ae90..96b187d1f6a 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
@@ -288,7 +288,9 @@ public class TestBackwardsCompatibility extends LuceneTestCase {
 
   final static String[] oldNames = {
     "8.0.0-cfs",
-    "8.0.0-nocfs"
+    "8.0.0-nocfs",
+    "8.1.0-cfs",
+    "8.1.0-nocfs"
   };
 
   public static String[] getOldNames() {
@@ -296,7 +298,8 @@ public class TestBackwardsCompatibility extends LuceneTestCase {
   }
   
   final static String[] oldSortedNames = {
-    "sorted.8.0.0"
+    "sorted.8.0.0",
+    "sorted.8.1.0"
   };
 
   public static String[] getOldSortedNames() {
diff --git a/lucene/backward-codecs/src/test/org/apache/lucene/index/index.8.1.0-cfs.zip b/lucene/backward-codecs/src/test/org/apache/lucene/index/index.8.1.0-cfs.zip
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diff --git a/lucene/backward-codecs/src/test/org/apache/lucene/index/index.8.1.0-nocfs.zip b/lucene/backward-codecs/src/test/org/apache/lucene/index/index.8.1.0-nocfs.zip
new file mode 100644
index 00000000000..7cdb0f9f336
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diff --git a/lucene/backward-codecs/src/test/org/apache/lucene/index/sorted.8.1.0.zip b/lucene/backward-codecs/src/test/org/apache/lucene/index/sorted.8.1.0.zip
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index 00000000000..ebb0de68bb9
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