diff --git a/nix/sources.json b/nix/sources.json
index 335e09c165a..d95ddaae1aa 100644
--- a/nix/sources.json
+++ b/nix/sources.json
@@ -22,7 +22,7 @@
     "ic-ref": {
         "ref": "release-0.11",
         "repo": "ssh://git@github.com/dfinity-lab/ic-ref",
-        "rev": "ad6ea9e56295342e3eb4cdd8c46e2b27796cb2a1",
+        "rev": "9edd0fdda006519118ed40515b84c74f69c59bc1",
         "type": "git"
     },
     "libtommath": {