diff --git a/pkgs/by-name/ph/phpactor/package.nix b/pkgs/by-name/ph/phpactor/package.nix
index 1ca6d5454213..dc21ef689e72 100644
--- a/pkgs/by-name/ph/phpactor/package.nix
+++ b/pkgs/by-name/ph/phpactor/package.nix
@@ -21,7 +21,14 @@ php.buildComposerProject2 (finalAttrs: {
 
   nativeBuildInputs = [ installShellFiles ];
 
-  php = php.withExtensions ({ all, ... }: with all; [ mbstring ]);
+  php = php.withExtensions (
+    { all, ... }:
+    with all;
+    [
+      mbstring
+      tokenizer
+    ]
+  );
 
   postInstall = ''
     installShellCompletion --cmd phpactor \