diff --git a/pkgs/by-name/pi/pixelfed/package.nix b/pkgs/by-name/pi/pixelfed/package.nix
index 5e648c685be7..7e057978954f 100644
--- a/pkgs/by-name/pi/pixelfed/package.nix
+++ b/pkgs/by-name/pi/pixelfed/package.nix
@@ -7,7 +7,7 @@
 , runtimeDir ? "/run/pixelfed"
 }:
 
-php.buildComposerProject (finalAttrs: {
+php.buildComposerProject2 (finalAttrs: {
   pname = "pixelfed";
   version = "0.12.4";
 
@@ -18,9 +18,10 @@ php.buildComposerProject (finalAttrs: {
     hash = "sha256-HEo0BOC/AEWhCApibxo2TBQF4kbLrbPEXqDygVQlVic=";
   };
 
-  vendorHash = "sha256-QkkSnQb9haH8SiXyLSS58VXSD4op7Hr4Z6vUAAYLIic=";
+  vendorHash = "sha256-aMKuuBTavNTIfYkuAn2vBFeh5xJd3BY8C+IVfglnS+g=";
 
   postInstall = ''
+    chmod -R u+w $out/share
     mv "$out/share/php/${finalAttrs.pname}"/* $out
     rm -R $out/bootstrap/cache
     # Move static contents for the NixOS module to pick it up, if needed.