diff --git a/pkgs/development/python-modules/contextvars/default.nix b/pkgs/development/python-modules/contextvars/default.nix
new file mode 100644
index 00000000000..d8ee3b1ca9e
--- /dev/null
+++ b/pkgs/development/python-modules/contextvars/default.nix
@@ -0,0 +1,21 @@
+{ lib, buildPythonPackage, fetchPypi, isPy36, immutables }:
+
+buildPythonPackage rec {
+  pname = "contextvars";
+  version = "2.2";
+  disabled = !isPy36;
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "046b385nfzkjh0wqmd268p2jkgn9fg6hz40npq7j1w3c8aqzhwvx";
+  };
+
+  propagatedBuildInputs = [ immutables ];
+
+  meta = {
+    description = "A backport of the Python 3.7 contextvars module for Python 3.6";
+    homepage = https://github.com/MagicStack/contextvars;
+    license = with lib.licenses; [ asl20 ];
+    maintainers = with lib.maintainers; [ catern ];
+  };
+}
diff --git a/pkgs/development/python-modules/immutables/default.nix b/pkgs/development/python-modules/immutables/default.nix
new file mode 100644
index 00000000000..975353406ca
--- /dev/null
+++ b/pkgs/development/python-modules/immutables/default.nix
@@ -0,0 +1,19 @@
+{ lib, buildPythonPackage, fetchPypi, pythonOlder }:
+
+buildPythonPackage rec {
+  pname = "immutables";
+  version = "0.5";
+  disabled = pythonOlder "3.5";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "1hba0vkqanwfnb5b3rs14bs7schsmczhan5nd93c1i6fzi17glap";
+  };
+
+  meta = {
+    description = "An immutable mapping type for Python";
+    homepage = https://github.com/MagicStack/immutables;
+    license = with lib.licenses; [ asl20 ];
+    maintainers = with lib.maintainers; [ catern ];
+  };
+}
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 254f76ced05..c805a8ba520 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -1629,6 +1629,8 @@ in {
 
   contexter = callPackage ../development/python-modules/contexter { };
 
+  contextvars = callPackage ../development/python-modules/contextvars {};
+
   contextlib2 = callPackage ../development/python-modules/contextlib2 { };
 
   cookiecutter = callPackage ../development/python-modules/cookiecutter { };
@@ -3120,6 +3122,8 @@ in {
 
   imbalanced-learn = callPackage ../development/python-modules/imbalanced-learn { };
 
+  immutables = callPackage ../development/python-modules/immutables {};
+
   imread = buildPythonPackage rec {
     name = "python-imread-${version}";
     version = "0.6";