diff --git a/build01/nixpkgs-update.nix b/build01/nixpkgs-update.nix
index 41f9568..731efbb 100644
--- a/build01/nixpkgs-update.nix
+++ b/build01/nixpkgs-update.nix
@@ -62,10 +62,10 @@ in
     script = ''
       ${nixpkgs-update}/bin/nixpkgs-update delete-done
       ${nixpkgs-update-github-releases} > /var/lib/nixpkgs-update/packages-to-update.txt
-      ${nixpkgs-update}/bin/nixpkgs-update update-list
+      ${nixpkgs-update}/bin/nixpkgs-update update-list --cachix
       ${nixpkgs-update}/bin/nixpkgs-update delete-done
       ${nixpkgs-update}/bin/nixpkgs-update fetch-repology > /var/lib/nixpkgs-update/packages-to-update.txt
-      ${nixpkgs-update}/bin/nixpkgs-update update-list
+      ${nixpkgs-update}/bin/nixpkgs-update update-list --cachix
     '';
   };
 
diff --git a/nix/sources.json b/nix/sources.json
index eedb1b3..d817251 100644
--- a/nix/sources.json
+++ b/nix/sources.json
@@ -17,10 +17,10 @@
         "homepage": "",
         "owner": "ryantm",
         "repo": "nixpkgs-update",
-        "rev": "d1f4c1327f60bd8d2868f7b79b93ed5b6abcb766",
-        "sha256": "1dhw751z38rcm4gvw3hi3hgshfrrbbvxmh4k8c7j45g8ki8v102w",
+        "rev": "3c15ad14cf4dac2c2d3bb8cd4bb326efa4beed6e",
+        "sha256": "03b5j67fazii03ym70f7js97gcl01blwh484nxf6561x24jwg2d3",
         "type": "tarball",
-        "url": "https://github.com/ryantm/nixpkgs-update/archive/d1f4c1327f60bd8d2868f7b79b93ed5b6abcb766.tar.gz",
+        "url": "https://github.com/ryantm/nixpkgs-update/archive/3c15ad14cf4dac2c2d3bb8cd4bb326efa4beed6e.tar.gz",
         "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
     },
     "nixpkgs-update-github-releases": {