diff --git a/pkgs/by-name/bu/bukubrow/package.nix b/pkgs/by-name/bu/bukubrow/package.nix
index 098cebca5692..fd9070899d38 100644
--- a/pkgs/by-name/bu/bukubrow/package.nix
+++ b/pkgs/by-name/bu/bukubrow/package.nix
@@ -21,18 +21,14 @@ rustPlatform.buildRustPackage (finalAttrs: {
   src = fetchFromGitHub {
     owner = "SamHH";
     repo = "bukubrow-host";
-    rev = "v${finalAttrs.version}";
-    sha256 = "sha256-xz5Agsm+ATQXXgpPGN4EQ00i1t8qUlrviNHauVdCu4U=";
+    tag = "v${finalAttrs.version}";
+    hash = "sha256-xz5Agsm+ATQXXgpPGN4EQ00i1t8qUlrviNHauVdCu4U=";
   };
 
   cargoHash = "sha256-mCPJE9WW14NtahbMnDcE+0xXl5w25dzerPy3wv78l20=";
 
   buildInputs = [ sqlite ];
 
-  passAsFile = [
-    "firefoxManifest"
-    "chromeManifest"
-  ];
   firefoxManifest = builtins.toJSON (
     manifest
     // {
@@ -46,14 +42,20 @@ rustPlatform.buildRustPackage (finalAttrs: {
     }
   );
   postBuild = ''
-    substituteAll $firefoxManifestPath firefox.json
-    substituteAll $chromeManifestPath chrome.json
+    printf "%s" "$firefoxManifest" > firefox.json
+    substituteInPlace firefox.json \
+      --replace-fail "@out@" "$out"
+    printf "%s" "$chromeManifest" > chrome.json
+    substituteInPlace chrome.json \
+      --replace-fail "@out@" "$out"
   '';
   postInstall = ''
     install -Dm0644 firefox.json $out/lib/mozilla/native-messaging-hosts/com.samhh.bukubrow.json
     install -Dm0644 chrome.json $out/etc/chromium/native-messaging-hosts/com.samhh.bukubrow.json
   '';
 
+  __structuredAttrs = true;
+
   meta = {
     description = "WebExtension for Buku, a command-line bookmark manager";
     homepage = "https://github.com/SamHH/bukubrow-host";