diff --git a/pkgs/development/libraries/ntdb/default.nix b/pkgs/development/libraries/ntdb/default.nix
index 0c67a194f58b..653f07bd716b 100644
--- a/pkgs/development/libraries/ntdb/default.nix
+++ b/pkgs/development/libraries/ntdb/default.nix
@@ -6,7 +6,10 @@ stdenv.mkDerivation rec {
   name = "ntdb-1.0";
 
   src = fetchurl {
-    url = "http://samba.org/ftp/tdb/${name}.tar.gz";
+    urls = [
+      "http://samba.org/ftp/tdb/${name}.tar.gz"
+      "http://ftp.riken.jp/net/samba/tdb/${name}.tar.gz"
+    ];
     sha256 = "0jdzgrz5sr25k83yrw7wqb3r0yj1v04z4s3lhsmnr5z6n5ifhyl1";
   };
 
diff --git a/pkgs/development/libraries/tdb/default.nix b/pkgs/development/libraries/tdb/default.nix
index b7ddd6e819d2..778cf8a8d7b7 100644
--- a/pkgs/development/libraries/tdb/default.nix
+++ b/pkgs/development/libraries/tdb/default.nix
@@ -6,7 +6,10 @@ stdenv.mkDerivation rec {
   name = "tdb-1.3.4";
 
   src = fetchurl {
-    url = "http://samba.org/ftp/tdb/${name}.tar.gz";
+    urls = [
+      "http://samba.org/ftp/tdb/${name}.tar.gz"
+      "http://distfiles.exherbo.org/distfiles/${name}.tar.gz"
+    ];
     sha256 = "0a8pa4ar7dxkbsgv1447av2rn35a1m6l1v2s9hgz3ccwni9wv1gm";
   };
 
diff --git a/pkgs/servers/samba/4.x.nix b/pkgs/servers/samba/4.x.nix
index 5373b4dd76f0..4857ecdbafea 100644
--- a/pkgs/servers/samba/4.x.nix
+++ b/pkgs/servers/samba/4.x.nix
@@ -36,7 +36,7 @@ stdenv.mkDerivation rec {
   src = fetchurl {
     urls = [
       "http://samba.org/samba/ftp/stable/${name}.tar.gz"
-      "http://pkgs.fedoraproject.org/repo/pkgs/samba/${name}.tar.gz"
+      "http://distfiles.exherbo.org/distfiles/${name}.tar.gz"
     ];
     sha256 = "1ficvglapxcw4zrgwkmmjbprsqrxks3ii29nblsr4wlrram4p8ay";
   };