diff --git a/hosts/vm/mediakiwi/mediawiki.nix b/hosts/vm/mediakiwi/mediawiki.nix
index f3c2ec7..4933a2c 100644
--- a/hosts/vm/mediakiwi/mediawiki.nix
+++ b/hosts/vm/mediakiwi/mediawiki.nix
@@ -35,8 +35,8 @@ in
     max_execution_time = 1000
     max_input_time = 2000
     default_socket_timeout = 2000
-    extension = ${pkgs.phpExtensions.mbstring}/lib/php/extensions/mbstring.so
-    extension = ${pkgs.phpExtensions.luasandbox}/lib/php/extensions/luasandbox.so
+    extension = ${pkgs.php85Extensions.mbstring}/lib/php/extensions/mbstring.so
+    extension = ${pkgs.php85Extensions.luasandbox}/lib/php/extensions/luasandbox.so
   '';
 
   services.nginx.clientMaxBodySize = "512M";