diff --git a/pkgs/by-name/fl/flarum/package.nix b/pkgs/by-name/fl/flarum/package.nix
index 489d335f038b..ab8daa790b82 100644
--- a/pkgs/by-name/fl/flarum/package.nix
+++ b/pkgs/by-name/fl/flarum/package.nix
@@ -3,20 +3,20 @@
 , fetchFromGitHub
 }:
 
-php.buildComposerProject (finalAttrs: {
+php.buildComposerProject2 (finalAttrs: {
   pname = "flarum";
   version = "1.8.1";
 
   src = fetchFromGitHub {
     owner = "flarum";
     repo = "flarum";
-    rev = "v${finalAttrs.version}";
+    tag = "v${finalAttrs.version}";
     hash = "sha256-kigUZpiHTM24XSz33VQYdeulG1YI5s/M02V7xue72VM=";
   };
 
   composerLock = ./composer.lock;
   composerStrictValidation = false;
-  vendorHash = "sha256-m+x/4A/DcMv7mMfQjpH1vsVqXuMHhSHeX3sgI43uJLI=";
+  vendorHash = "sha256-pup+ZfPEnqoA3wEXQNn4pWTYXri6d4XzMfuc8k1SeQk=";
 
   meta = with lib; {
     changelog = "https://github.com/flarum/framework/blob/main/CHANGELOG.md";