diff --git a/pkgs/development/interpreters/php/8.1.nix b/pkgs/development/interpreters/php/8.1.nix
index 86d76fcbd76b..1be51b03f1f6 100644
--- a/pkgs/development/interpreters/php/8.1.nix
+++ b/pkgs/development/interpreters/php/8.1.nix
@@ -2,8 +2,8 @@
 
 let
   base = callPackage ./generic.nix (_args // {
-    version = "8.1.20";
-    hash = "sha256-VVeFh1FKJwdQD4UxnlfA1N+biAPNsmVmWVrEv0WdxN0=";
+    version = "8.1.21";
+    hash = "sha256-bqSegzXWMhd/VrUHFgqhUcewIBhXianBSFn85dSgd20=";
   });
 
 in