diff --git a/hmm.json b/hmm.json
index c9dc959c7..a52055d03 100644
--- a/hmm.json
+++ b/hmm.json
@@ -109,7 +109,7 @@
       "name": "polymod",
       "type": "git",
       "dir": null,
-      "ref": "bb82bfe040965dd55c3b48cb8a3008afdc101ce7",
+      "ref": "4bcd614103469af79a320898b823d1df8a55c3de",
       "url": "https://github.com/larsiusprime/polymod"
     },
     {