diff --git a/pkgs/development/python-modules/tomlkit/default.nix b/pkgs/development/python-modules/tomlkit/default.nix
new file mode 100644
index 000000000000..47cf737f1889
--- /dev/null
+++ b/pkgs/development/python-modules/tomlkit/default.nix
@@ -0,0 +1,29 @@
+{ lib, buildPythonPackage, fetchPypi, isPy27, isPy34
+, enum34, functools32, typing
+}:
+
+buildPythonPackage rec {
+  pname = "tomlkit";
+  version = "0.5.3";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "1hjfzlb6y694pkadygcaq1n63di97pxgq2zpc74in1axc5166l6n";
+  };
+
+  propagatedBuildInputs =
+    lib.optionals isPy27 [ enum34 functools32 ]
+    ++ lib.optional (isPy27 || isPy34) typing;
+
+  # The Pypi tarball doesn't include tests, and the GitHub source isn't
+  # buildable until we bootstrap poetry, see
+  # https://github.com/NixOS/nixpkgs/pull/53599#discussion_r245855665
+  doCheck = false;
+
+  meta = with lib; {
+    homepage = https://github.com/sdispater/tomlkit;
+    description = "Style-preserving TOML library for Python";
+    license = licenses.mit;
+    maintainers = with maintainers; [ jakewaksbaum ];
+  };
+}
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 78997b6536b9..5bab0ace12b8 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -774,6 +774,8 @@ in {
 
   toml = callPackage ../development/python-modules/toml { };
 
+  tomlkit = callPackage ../development/python-modules/tomlkit { };
+
   unifi = callPackage ../development/python-modules/unifi { };
 
   vidstab = callPackage ../development/python-modules/vidstab { };