diff --git a/pkgs/development/libraries/at-spi2-atk/default.nix b/pkgs/development/libraries/at-spi2-atk/default.nix
index 30fe8173e86f..3aef90594a15 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 = "2.24";
-  versionMinor = "1";
+  versionMajor = "2.26";
+  versionMinor = "0";
   moduleName   = "at-spi2-atk";
   name = "${moduleName}-${versionMajor}.${versionMinor}";
 
   src = fetchurl {
     url = "mirror://gnome/sources/${moduleName}/${versionMajor}/${name}.tar.xz";
-    sha256 = "60dc90ac4f74b8ffe96a9363c25208a443b381bacecfefea6de549f20ed6957d";
+    sha256 = "d25e528e1406a10c7d9b675aa15e638bcbf0a122ca3681f655a30cce83272fb9";
   };
 
   buildInputs = [ python pkgconfig popt atk libX11 libICE xorg.libXtst libXi
diff --git a/pkgs/development/libraries/at-spi2-core/default.nix b/pkgs/development/libraries/at-spi2-core/default.nix
index 4d496932f669..bd8588f9771f 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 = "2.24";
-  versionMinor = "1";
+  versionMajor = "2.26";
+  versionMinor = "0";
   moduleName   = "at-spi2-core";
   name = "${moduleName}-${versionMajor}.${versionMinor}";
 
   src = fetchurl {
     url = "mirror://gnome/sources/${moduleName}/${versionMajor}/${name}.tar.xz";
-    sha256 = "1e90d064b937aacfe79a96232ac7e63d28d716e85bd9ff4333f865305a959b5b";
+    sha256 = "511568a65fda11fdd5ba5d4adfd48d5d76810d0e6ba4f7460f1b2ec0dbbbc337";
   };
 
   outputs = [ "out" "dev" ];