diff --git a/pkgs/applications/networking/instant-messengers/tkabber-plugins/default.nix b/pkgs/applications/networking/instant-messengers/tkabber-plugins/default.nix
index b46133e433e6..bb5d0b1c76bf 100644
--- a/pkgs/applications/networking/instant-messengers/tkabber-plugins/default.nix
+++ b/pkgs/applications/networking/instant-messengers/tkabber-plugins/default.nix
@@ -2,11 +2,11 @@
 
 stdenv.mkDerivation rec {
   name = "tkabber-plugins-${version}";
-  version = "0.11.1";
+  version = "1.0";
 
   src = fetchurl {
-    url = "http://files.jabber.ru/tkabber/tkabber-plugins-${version}.tar.gz";
-    sha256 = "0jxriqvsckbih5a4lpisxy6wjw022wsz5j5n171gz0q3xw19dbgz";
+    url = "http://files.jabber.ru/tkabber/tkabber-plugins-${version}.tar.xz";
+    sha256 = "d61251dc664f0bfa8534e578096dede9a7bb7d4f2620489f8d2c43d36cd61ba9";
   };
 
   configurePhase = ''
diff --git a/pkgs/applications/networking/instant-messengers/tkabber/default.nix b/pkgs/applications/networking/instant-messengers/tkabber/default.nix
index fd989739c941..69c404f33b4c 100644
--- a/pkgs/applications/networking/instant-messengers/tkabber/default.nix
+++ b/pkgs/applications/networking/instant-messengers/tkabber/default.nix
@@ -10,11 +10,11 @@ let
     (map getTclLibPath tclLibraries);
 
 in stdenv.mkDerivation rec {
-  name = "tkabber-0.11.1";
+  name = "tkabber-1.0";
 
   src = fetchurl {
-    url = "http://files.jabber.ru/tkabber/tkabber-0.11.1.tar.gz";
-    sha256 = "19xv555cm7a2gczdalf9srxm39hmsh0fbidhwxa74a89nqkbf4lv";
+    url = "http://files.jabber.ru/tkabber/${name}.tar.xz";
+    sha256 = "49ee6e897dfe52ebac256531b54955e6b39223f606a9b8ad63a52475389db206";
   };
 
   defaultTheme = "ocean-deep";