diff --git a/pkgs/servers/web-apps/mediawiki/default.nix b/pkgs/servers/web-apps/mediawiki/default.nix
index 490459f2e250..d16d59af6b90 100644
--- a/pkgs/servers/web-apps/mediawiki/default.nix
+++ b/pkgs/servers/web-apps/mediawiki/default.nix
@@ -2,11 +2,11 @@
 
 stdenv.mkDerivation rec {
   pname = "mediawiki";
-  version = "1.33.1";
+  version = "1.34.0";
 
   src = with stdenv.lib; fetchurl {
     url = "https://releases.wikimedia.org/mediawiki/${versions.majorMinor version}/${pname}-${version}.tar.gz";
-    sha256 = "19x10vsgg2fhcpmfvdswwilqwa65byrsmzvhk2v8bsxzhp6s95vx";
+    sha256 = "1lckjnharwxh9xb7gxdxrkb0r3xgd0dh4019cnbixn5mmzgc696y";
   };
 
   prePatch = ''