diff --git a/pkgs/by-name/up/upsun/package.nix b/pkgs/by-name/up/upsun/package.nix
index d47aaa1418bd..ab0bf8c85594 100644
--- a/pkgs/by-name/up/upsun/package.nix
+++ b/pkgs/by-name/up/upsun/package.nix
@@ -1,27 +1,27 @@
 { stdenvNoCC, lib, fetchurl }:
 
-stdenvNoCC.mkDerivation rec {
+stdenvNoCC.mkDerivation (finalAttrs: {
   pname = "upsun";
   version = "5.0.12";
 
   src = {
-    x86_64-darwin = (fetchurl {
-      url = "https://github.com/platformsh/cli/releases/download/${version}/upsun_${version}_darwin_all.tar.gz";
+    x86_64-darwin = fetchurl {
+      url = "https://github.com/platformsh/cli/releases/download/${finalAttrs.version}/upsun_${finalAttrs.version}_darwin_all.tar.gz";
       hash = "sha256-RwTMJwvkuX/okHSyxzpvaD6uD8fheVbr7bgBC2eMQOo=";
-    });
-    aarch64-darwin = (fetchurl {
-      url = "https://github.com/platformsh/cli/releases/download/${version}/upsun_${version}_darwin_all.tar.gz";
+    };
+    aarch64-darwin = fetchurl {
+      url = "https://github.com/platformsh/cli/releases/download/${finalAttrs.version}/upsun_${finalAttrs.version}_darwin_all.tar.gz";
       hash = "sha256-RwTMJwvkuX/okHSyxzpvaD6uD8fheVbr7bgBC2eMQOo=";
-    });
-    x86_64-linux = (fetchurl {
-      url = "https://github.com/platformsh/cli/releases/download/${version}/upsun_${version}_linux_amd64.tar.gz";
+    };
+    x86_64-linux = fetchurl {
+      url = "https://github.com/platformsh/cli/releases/download/${finalAttrs.version}/upsun_${finalAttrs.version}_linux_amd64.tar.gz";
       hash = "sha256-svEPMVY7r7pAoXwFIMYqCEduqR3Nkocaguf2nIGt+G8=";
-    });
-    aarch64-linux = (fetchurl {
-      url = "https://github.com/platformsh/cli/releases/download/${version}/upsun_${version}_linux_arm64.tar.gz";
+    };
+    aarch64-linux = fetchurl {
+      url = "https://github.com/platformsh/cli/releases/download/${finalAttrs.version}/upsun_${finalAttrs.version}_linux_arm64.tar.gz";
       hash = "sha256-ZraS/PqSPL/kcj5o6hzDdL70IV2IWXOma6OHCiXIDQc=";
-    });
-  }.${stdenvNoCC.system} or (throw "${pname}-${version}: ${stdenvNoCC.system} is unsupported.");
+    };
+  }.${stdenvNoCC.system} or (throw "${finalAttrs.pname}-${finalAttrs.version}: ${stdenvNoCC.system} is unsupported.");
 
   dontConfigure = true;
   dontBuild = true;
@@ -44,4 +44,4 @@ stdenvNoCC.mkDerivation rec {
     platforms = [ "x86_64-linux" "aarch64-linux" "x86_64-darwin" "aarch64-darwin" ];
     sourceProvenance = with lib.sourceTypes; [ binaryNativeCode ];
   };
-}
+})