diff --git a/hmm.json b/hmm.json
index b07f8c50a..89aa6acc7 100644
--- a/hmm.json
+++ b/hmm.json
@@ -68,7 +68,7 @@
       "name": "hxcodec",
       "type": "git",
       "dir": null,
-      "ref": "91adeec",
+      "ref": "c42ab99",
       "url": "https://github.com/polybiusproxy/hxCodec"
     },
     {