diff --git a/hmm.json b/hmm.json
index c8ad32c25..d2f8bb220 100644
--- a/hmm.json
+++ b/hmm.json
@@ -197,7 +197,7 @@
       "name": "polymod",
       "type": "git",
       "dir": null,
-      "ref": "9824bf4f00863c152d5afe3ac4bbcac173d80684",
+      "ref": "b1108c0b5cccf4aceb92935866ef7b9a0fc81aec",
       "url": "https://github.com/larsiusprime/polymod"
     },
     {