diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 71d5f956732..ac7302c36a1 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -492,6 +492,23 @@ let
     };
   };
 
+  atomicwrites = buildPythonPackage rec {
+    version = "0.1.0";
+    name = "atomicwrites-${version}";
+
+    src = pkgs.fetchurl {
+      url = "https://pypi.python.org/packages/source/a/atomicwrites/atomicwrites-${version}.tar.gz";
+      sha256 = "1lxz0xhnzihqlvl1h6j2nfxjqqgr4s08196z5phnlcz2s7d5z0mg";
+    };
+
+    meta = {
+      description = "Atomic file writes on POSIX";
+      homepage = https://pypi.python.org/pypi/atomicwrites/0.1.0;
+      maintainers = with maintainers; [ matthiasbeyer ];
+    };
+
+  };
+
   argparse = buildPythonPackage (rec {
     name = "argparse-1.2.1";