diff --git a/nixos/tests/php/default.nix b/nixos/tests/php/default.nix
index 6ecaed24604..cf78c9db53b 100644
--- a/nixos/tests/php/default.nix
+++ b/nixos/tests/php/default.nix
@@ -2,8 +2,14 @@
 , config ? {}
 , pkgs ? import ../../.. { inherit system config; }
 , php ? pkgs.php
-}: {
-  fpm = import ./fpm.nix { inherit system pkgs php; };
-  httpd = import ./httpd.nix { inherit system pkgs php; };
-  pcre = import ./pcre.nix { inherit system pkgs php; };
+}:
+
+let
+  php' = php.buildEnv {
+    extensions = { enabled, all }: with all; enabled ++ [ apcu ];
+  };
+in {
+  fpm = import ./fpm.nix { inherit system pkgs; php = php'; };
+  httpd = import ./httpd.nix { inherit system pkgs; php = php'; };
+  pcre = import ./pcre.nix { inherit system pkgs; php = php'; };
 }
diff --git a/nixos/tests/php/fpm.nix b/nixos/tests/php/fpm.nix
index 3550116a201..b11f85d39cb 100644
--- a/nixos/tests/php/fpm.nix
+++ b/nixos/tests/php/fpm.nix
@@ -50,7 +50,7 @@ import ../make-test-python.nix ({pkgs, lib, php, ...}: {
     assert "PHP Version ${php.version}" in response, "PHP version not detected"
 
     # Check so we have database and some other extensions loaded
-    for ext in ["json", "opcache", "pdo_mysql", "pdo_pgsql", "pdo_sqlite"]:
+    for ext in ["json", "opcache", "pdo_mysql", "pdo_pgsql", "pdo_sqlite", "apcu"]:
         assert ext in response, f"Missing {ext} extension"
         machine.succeed(f'test -n "$(php -m | grep -i {ext})"')
   '';