diff --git a/pkgs/development/python-modules/nbtlib/default.nix b/pkgs/development/python-modules/nbtlib/default.nix
new file mode 100644
index 000000000000..b70259c9c76d
--- /dev/null
+++ b/pkgs/development/python-modules/nbtlib/default.nix
@@ -0,0 +1,43 @@
+{ lib
+, buildPythonPackage
+, fetchFromGitHub
+, poetry-core
+, numpy
+}:
+
+buildPythonPackage rec {
+  pname = "nbtlib";
+  version = "2.0.4";
+  format = "pyproject";
+
+  src = fetchFromGitHub {
+    owner = "vberlier";
+    repo = "nbtlib";
+    rev = "v${version}";
+    hash = "sha256-L8eX6/0qiQ4UxbmDicLedzj+oBjYmlK96NpljE/A3eI=";
+  };
+
+  prePatch = ''
+      substituteInPlace pyproject.toml \
+      --replace "poetry>=0.12" "poetry-core" \
+      --replace "poetry.masonry" "poetry.core.masonry"
+  '';
+
+  nativeBuildInputs = [
+    poetry-core
+  ];
+
+  propagatedBuildInputs = [
+    numpy
+  ];
+
+  pythonImportsCheck = [ "nbtlib" ];
+
+  meta = with lib; {
+    description = "A python library to read and edit nbt data";
+    homepage = "https://github.com/vberlier/nbtlib";
+    changelog = "https://github.com/vberlier/nbtlib/blob/${src.rev}/CHANGELOG.md";
+    license = licenses.mit;
+    maintainers = with maintainers; [ gdd ];
+  };
+}
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 13ccbd69bffd..3ca984e77a1d 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -6724,6 +6724,8 @@ self: super: with self; {
 
   nbsphinx = callPackage ../development/python-modules/nbsphinx { };
 
+  nbtlib = callPackage ../development/python-modules/nbtlib { };
+
   nbval = callPackage ../development/python-modules/nbval { };
 
   nbxmpp = callPackage ../development/python-modules/nbxmpp { };