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 26d08699d43..4dc75002d23 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
@@ -245,6 +245,8 @@ public class TestBackwardsCompatibility extends LuceneTestCase {
       "5.5.1-nocfs",
       "5.5.2-cfs",
       "5.5.2-nocfs",
+      "5.5.3-cfs",
+      "5.5.3-nocfs",
       "6.0.0-cfs",
       "6.0.0-nocfs",
       "6.0.1-cfs",
diff --git a/lucene/backward-codecs/src/test/org/apache/lucene/index/index.5.5.3-cfs.zip b/lucene/backward-codecs/src/test/org/apache/lucene/index/index.5.5.3-cfs.zip
new file mode 100644
index 00000000000..4d8999c2639
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diff --git a/lucene/backward-codecs/src/test/org/apache/lucene/index/index.5.5.3-nocfs.zip b/lucene/backward-codecs/src/test/org/apache/lucene/index/index.5.5.3-nocfs.zip
new file mode 100644
index 00000000000..d83a12ecd56
Binary files /dev/null and b/lucene/backward-codecs/src/test/org/apache/lucene/index/index.5.5.3-nocfs.zip differ