diff --git a/pkgs/development/interpreters/ruby/ruby-18.nix b/pkgs/development/interpreters/ruby/ruby-18.nix
index cfb49839466..e6cc755981b 100644
--- a/pkgs/development/interpreters/ruby/ruby-18.nix
+++ b/pkgs/development/interpreters/ruby/ruby-18.nix
@@ -17,7 +17,7 @@ stdenv.mkDerivation rec {
   name = "ruby-${version}";
   
   src = fetchurl {
-    url = "ftp://ftp.ruby-lang.org/pub/ruby/1.8/${name}.tar.gz";
+    url = "http://cache.ruby-lang.org/pub/ruby/1.8/${name}.tar.gz";
     sha256 = "0g2dsn8lmiqwqsp13ryzi97qxr7742v5l7v506x6wq9aiwpk42p6";
   };
 
diff --git a/pkgs/development/interpreters/ruby/ruby-19.nix b/pkgs/development/interpreters/ruby/ruby-19.nix
index 038a160b327..8689e41867b 100644
--- a/pkgs/development/interpreters/ruby/ruby-19.nix
+++ b/pkgs/development/interpreters/ruby/ruby-19.nix
@@ -18,7 +18,7 @@ stdenv.mkDerivation rec {
   name = "ruby-${version}";
   
   src = fetchurl {
-    url = "ftp://ftp.ruby-lang.org/pub/ruby/1.9/${name}.tar.bz2";
+    url = "http://cache.ruby-lang.org/pub/ruby/1.9/${name}.tar.bz2";
     sha256 = "0w1avj8qfskvkgvrjxxc1cxjm14bf1v60ipvcl5q3zpn9k14k2cx";
   };
 
diff --git a/pkgs/development/interpreters/ruby/ruby-2.0.nix b/pkgs/development/interpreters/ruby/ruby-2.0.nix
index 975fecd1a3f..b9f03198659 100644
--- a/pkgs/development/interpreters/ruby/ruby-2.0.nix
+++ b/pkgs/development/interpreters/ruby/ruby-2.0.nix
@@ -18,7 +18,7 @@ stdenv.mkDerivation rec {
   name = "ruby-${version}";
   
   src = fetchurl {
-    url = "ftp://ftp.ruby-lang.org/pub/ruby/2.0/${name}.tar.bz2";
+    url = "http://cache.ruby-lang.org/pub/ruby/2.0/${name}.tar.bz2";
     sha256 = "0pr9jf01cfap93xcngyd5zpns67ffjsgaxkm0qr1r464rj9d7066";
   };