diff --git a/pkgs/development/libraries/webkitgtk/default.nix b/pkgs/development/libraries/webkitgtk/default.nix
index d3b0ef67d86e..d8b7bbc6d65b 100644
--- a/pkgs/development/libraries/webkitgtk/default.nix
+++ b/pkgs/development/libraries/webkitgtk/default.nix
@@ -64,7 +64,7 @@ assert enableGeoLocation -> geoclue2 != null;
 
 stdenv.mkDerivation rec {
   pname = "webkitgtk";
-  version = "2.34.1";
+  version = "2.34.3";
 
   outputs = [ "out" "dev" ];
 
@@ -72,7 +72,7 @@ stdenv.mkDerivation rec {
 
   src = fetchurl {
     url = "https://webkitgtk.org/releases/${pname}-${version}.tar.xz";
-    sha256 = "sha256-RDwTFnBd4CR0F0joX+MjJNKZ2e5o5v6zQLieSgQHPe4=";
+    sha256 = "sha256-DS83qjLiGjbk3Vpc565c4nQ1wp1oA7liuMkMsMxJxS0=";
   };
 
   patches = lib.optionals stdenv.isLinux [