diff --git a/pkgs/development/php-packages/redis/default.nix b/pkgs/development/php-packages/redis/default.nix
index b5219da07da3..f36568aaed17 100644
--- a/pkgs/development/php-packages/redis/default.nix
+++ b/pkgs/development/php-packages/redis/default.nix
@@ -3,6 +3,7 @@
   lib,
   php,
   fetchFromGitHub,
+  fetchpatch,
 }:
 
 let
@@ -19,6 +20,14 @@ buildPecl {
     hash = "sha256-Ie31zak6Rqxm2+jGXWg6KN4czHe9e+190jZRQ5VoB+M=";
   };
 
+  patches = [
+    # Fix build with PHP 8.4.
+    (fetchpatch {
+      url = "https://github.com/phpredis/phpredis/commit/a51215ce2b22bcd1f506780c35b6833471e0b8cb.patch";
+      hash = "sha256-DoGPMyuI/IZdF+8jG5faoyG2aM+WDz0obH6S7HoOMX8=";
+    })
+  ];
+
   internalDeps = with php.extensions; [ session ];
 
   meta = with lib; {