diff --git a/pkgs/development/python-modules/msrplib/default.nix b/pkgs/development/python-modules/msrplib/default.nix
new file mode 100644
index 000000000000..0ccdbdd1b87c
--- /dev/null
+++ b/pkgs/development/python-modules/msrplib/default.nix
@@ -0,0 +1,41 @@
+{
+  lib,
+  buildPythonPackage,
+  fetchFromGitHub,
+  setuptools,
+  unstableGitUpdater,
+}:
+
+buildPythonPackage rec {
+  pname = "msrplib";
+  version = "0.20.1-unstable-2021-06-01";
+  pyproject = true;
+
+  src = fetchFromGitHub {
+    owner = "AGProjects";
+    repo = "python3-msrplib";
+    # no tag pushed for version 0.21.1 release, and commit title is wrong
+    rev = "5bd069620d436d5a65e1c369e43cc6b88857fb9e";
+    hash = "sha256-z0gF/oQW/h3qiCL1cFWBPK7JYzLCNAD7/dg7HfY4rig=";
+  };
+
+  build-system = [
+    setuptools
+  ];
+
+  # only test requires networking
+  doCheck = false;
+
+  pythonImportsCheck = [ "msrplib" ];
+
+  passthru.updateScript = unstableGitUpdater { };
+
+  meta = {
+    description = "MSRP (RFC4975) client library";
+    homepage = "https://github.com/AGProjects/python3-msrplib";
+    license = lib.licenses.lgpl21Plus;
+    teams = [
+      lib.teams.ngi
+    ];
+  };
+}
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index c85cb1d2f56b..f887dbad4271 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -9595,6 +9595,8 @@ self: super: with self; {
 
   msrestazure = callPackage ../development/python-modules/msrestazure { };
 
+  msrplib = callPackage ../development/python-modules/msrplib { };
+
   mss = callPackage ../development/python-modules/mss { };
 
   msticpy = callPackage ../development/python-modules/msticpy { };