diff --git a/pkgs/development/python-modules/poetry-core/default.nix b/pkgs/development/python-modules/poetry-core/default.nix
new file mode 100644
index 000000000000..3507d2cfb792
--- /dev/null
+++ b/pkgs/development/python-modules/poetry-core/default.nix
@@ -0,0 +1,22 @@
+{ lib
+, buildPythonPackage
+, fetchPypi
+}:
+
+buildPythonPackage rec {
+  pname = "poetry-core";
+  version = "1.0.0a9";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "f08e9829fd06609ca5615faa91739b589eb71e025a6aaf7ddffb698676eb7c8c";
+  };
+
+  doCheck = false; # No tests in sdist.
+
+  meta = {
+    description = "Core utilities for Poetry";
+    homepage = "https://github.com/python-poetry/core";
+    license = lib.licenses.mit;
+  };
+}
\ No newline at end of file
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index dc4f1b96882b..08ef76a0246a 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -1142,6 +1142,8 @@ in {
 
   poetry = callPackage ../development/python-modules/poetry { };
 
+  poetry-core = callPackage ../development/python-modules/poetry-core { };
+
   polyline = callPackage ../development/python-modules/polyline { };
 
   postorius = disabledIf (!isPy3k) (callPackage ../servers/mail/mailman/postorius.nix { });