diff --git a/pkgs/by-name/fo/foomatic-db-nonfree/package.nix b/pkgs/by-name/fo/foomatic-db-nonfree/package.nix
index a9ce7228f45f..a433b58a0ac9 100644
--- a/pkgs/by-name/fo/foomatic-db-nonfree/package.nix
+++ b/pkgs/by-name/fo/foomatic-db-nonfree/package.nix
@@ -6,7 +6,7 @@
 , perl
 }:
 
-stdenv.mkDerivation rec {
+stdenv.mkDerivation (finalAttrs: {
   pname = "foomatic-db-nonfree";
   version = "unstable-2015-06-05";
 
@@ -60,7 +60,7 @@ stdenv.mkDerivation rec {
   '';
 
   meta = {
-    changelog = "https://github.com/OpenPrinting/foomatic-db-nonfree/blob/${src.rev}/ChangeLog";
+    changelog = "https://github.com/OpenPrinting/foomatic-db-nonfree/blob/${finalAttrs.src.rev}/ChangeLog";
     description = "OpenPrinting printer support database (unfree content)";
     downloadPage = "https://www.openprinting.org/download/foomatic/";
     homepage = "https://openprinting.github.io/projects/02-foomatic/";
@@ -84,4 +84,4 @@ stdenv.mkDerivation rec {
       Dell, Genicom, Lexmark, Oce and Xerox.
     '';
   };
-}
+})
diff --git a/pkgs/by-name/fo/foomatic-db/package.nix b/pkgs/by-name/fo/foomatic-db/package.nix
index b4be3a143604..deafbe5fc57d 100644
--- a/pkgs/by-name/fo/foomatic-db/package.nix
+++ b/pkgs/by-name/fo/foomatic-db/package.nix
@@ -11,7 +11,7 @@
 , patchPpdFilesHook
 }:
 
-stdenv.mkDerivation rec {
+stdenv.mkDerivation (finalAttrs: {
   pname = "foomatic-db";
   version = "unstable-2024-02-09";
 
@@ -79,7 +79,7 @@ stdenv.mkDerivation rec {
   '';
 
   meta = {
-    changelog = "https://github.com/OpenPrinting/foomatic-db/blob/${src.rev}/ChangeLog";
+    changelog = "https://github.com/OpenPrinting/foomatic-db/blob/${finalAttrs.src.rev}/ChangeLog";
     description = "OpenPrinting printer support database (free content)";
     downloadPage = "https://www.openprinting.org/download/foomatic/";
     homepage = "https://openprinting.github.io/projects/02-foomatic/";
@@ -100,4 +100,4 @@ stdenv.mkDerivation rec {
       Oce, Oki, Ricoh, Samsung, Savin, Sharp, Toshiba and Utax.
     '';
   };
-}
+})