diff --git a/pkgs/development/libraries/at-spi2-atk/default.nix b/pkgs/development/libraries/at-spi2-atk/default.nix
index 940fc2bb6cc6..84c0b5f56aa1 100644
--- a/pkgs/development/libraries/at-spi2-atk/default.nix
+++ b/pkgs/development/libraries/at-spi2-atk/default.nix
@@ -2,14 +2,14 @@
 , intltool, dbus_glib, at_spi2_core, libSM }:
 
 stdenv.mkDerivation rec {
-  versionMajor = "2.16";
+  versionMajor = "2.18";
   versionMinor = "0";
   moduleName   = "at-spi2-atk";
   name = "${moduleName}-${versionMajor}.${versionMinor}";
 
   src = fetchurl {
     url = "mirror://gnome/sources/${moduleName}/${versionMajor}/${name}.tar.xz";
-    sha256 = "1y9gfz1iz3wpja7s000f0bmyyvc6im5fcdl6bxwbz0v3qdgc9vvq";
+    sha256 = "0xgkrnx04vaklbkzc7bzym9s0qhj8aiz4knqlxgx3vxnacsb6vaa";
   };
 
   buildInputs = [ python pkgconfig popt atk libX11 libICE xlibs.libXtst libXi
diff --git a/pkgs/development/libraries/at-spi2-core/default.nix b/pkgs/development/libraries/at-spi2-core/default.nix
index 0fc28185501a..b49d1ddb8040 100644
--- a/pkgs/development/libraries/at-spi2-core/default.nix
+++ b/pkgs/development/libraries/at-spi2-core/default.nix
@@ -2,14 +2,14 @@
 , libX11, xextproto, libSM, libICE, libXtst, libXi, gobjectIntrospection }:
 
 stdenv.mkDerivation rec {
-  versionMajor = "2.16";
+  versionMajor = "2.18";
   versionMinor = "0";
   moduleName   = "at-spi2-core";
   name = "${moduleName}-${versionMajor}.${versionMinor}";
 
   src = fetchurl {
     url = "mirror://gnome/sources/${moduleName}/${versionMajor}/${name}.tar.xz";
-    sha256 = "1l3l39mw23zyjlcqidvkyqlr4gwbhplzw2hcv3qvn6p8ikxpf2qw";
+    sha256 = "0xna0gnlqvzy6209klirywcm7ianazshg6pkk828g07bnrywgvhs";
   };
 
   outputs = [ "out" "doc" ];