diff --git a/pkgs/development/libraries/freetds/default.nix b/pkgs/development/libraries/freetds/default.nix
index 87a7f879be8d..b39da46e4a26 100644
--- a/pkgs/development/libraries/freetds/default.nix
+++ b/pkgs/development/libraries/freetds/default.nix
@@ -4,7 +4,7 @@ stdenv.mkDerivation {
   name = "freetds-0.91";
 
   src = fetchurl {
-    url = ftp://ftp.ibiblio.org/pub/Linux/ALPHA/freetds/stable/freetds-stable.tgz;
+    url = ftp://ftp.astron.com/pub/freetds/stable/freetds-stable.tgz;
     sha256 = "0r946axzxs0czsmr7283w7vmk5jx3jnxxc32d2ncxsrsh2yli0ba";
   };
 
diff --git a/pkgs/development/tools/misc/avrdude/default.nix b/pkgs/development/tools/misc/avrdude/default.nix
index 7574500dbbb2..133e1c381940 100644
--- a/pkgs/development/tools/misc/avrdude/default.nix
+++ b/pkgs/development/tools/misc/avrdude/default.nix
@@ -3,11 +3,11 @@
 let edf = composableDerivation.edf; in
 
 composableDerivation.composableDerivation {} rec {
-  name="avrdude-5.10";
+  name="avrdude-5.11";
 
   src = fetchurl {
     url = "mirror://savannah/avrdude/${name}.tar.gz";
-    sha256 = "0pmy73777x8p7f2aj2w2q1dnk1bvhd1cm7hcs1s9hsdqsmiinl41";
+    sha256 = "1mwmslqysak25a3x61pj97wygqgk79s5qpp50xzay6yb1zrz85v3";
   };
 
   configureFlags = [ "--disable-dependency-tracking" ];
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index cb77e11babd0..dea65b5fe513 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -3793,14 +3793,16 @@ pythonPackages = modules // import ./python-packages-generated.nix {
     };
   };
 
-  pip = buildPythonPackage {
-    name = "pip-1.2.1";
+  pip = buildPythonPackage rec {
+    version = "1.4.1";
+    name = "pip-${version}";
     src = fetchurl {
-      url = "http://pypi.python.org/packages/source/p/pip/pip-1.2.1.tar.gz";
-      md5 = "db8a6d8a4564d3dc7f337ebed67b1a85";
+      url = "http://pypi.python.org/packages/source/p/pip/pip-${version}.tar.gz";
+      sha256 = "0knhj3c1nqqzxgqin8l0gzy6nzsbcxinyr0cbp1j99hi8xahcyjf";
     };
     buildInputs = [ mock scripttest virtualenv nose ];
     # ValueError: Working directory tests not found, or not a directory
+    # see https://github.com/pypa/pip/issues/92
     doCheck = false;
   };