diff --git a/nix/packages/by-name/hategroup_blocklist/package.nix b/nix/packages/by-name/hategroup_blocklist/package.nix
index 3dc813bb..e6714157 100644
--- a/nix/packages/by-name/hategroup_blocklist/package.nix
+++ b/nix/packages/by-name/hategroup_blocklist/package.nix
@@ -3,17 +3,14 @@
   stdenvNoCC,
   lib,
 }:
-let
-  rev = "cc19c050997d5f54014bb20c764b131e003dfb17";
-in
-stdenvNoCC.mkDerivation {
+stdenvNoCC.mkDerivation (finalAttrs: {
   pname = "hategroup_blocklist";
-  version = "unstable-" + lib.substring 0 8 rev;
+  version = "unstable-" + lib.substring 0 8 finalAttrs.src.rev;
 
   src = fetchFromGitHub {
     owner = "chigh";
     repo = "hategroup-dnsbl";
-    inherit rev;
+    rev = "cc19c050997d5f54014bb20c764b131e003dfb17";
     hash = "sha256-SZBrjIBUw687MdrbOV7WrP5IhAAtKvPL2GqdcICHNvQ=";
   };
 
@@ -28,4 +25,4 @@ stdenvNoCC.mkDerivation {
     cat $out/share/domains.txt |
       sed 's/^\([^#].*\)$/0.0.0.0 \1/' > $out/share/hosts.txt
   '';
-}
+})