diff --git a/nix/sources.json b/nix/sources.json
index fcbbf88e100..6db8ab7e03b 100644
--- a/nix/sources.json
+++ b/nix/sources.json
@@ -26,10 +26,10 @@
         "homepage": "",
         "owner": "dfinity",
         "repo": "ic",
-        "rev": "930934221d30c365e291874eec3fd93d6b06683a",
-        "sha256": "0582dr0206i35wxdx41k1laglwlxxjdr5s6xxg390xwvb217471a",
+        "rev": "ac191be684355906ca28c07584401dae47b79b8b",
+        "sha256": "0y5x1yiqilavg171ani1nj56slin3idabxf8849k3vzg2j7ysdf5",
         "type": "tarball",
-        "url": "https://github.com/dfinity/ic/archive/930934221d30c365e291874eec3fd93d6b06683a.tar.gz",
+        "url": "https://github.com/dfinity/ic/archive/ac191be684355906ca28c07584401dae47b79b8b.tar.gz",
         "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
     },
     "ic-hs": {