diff --git a/README.md b/README.md
index 66c2d99..d28eee1 100644
--- a/README.md
+++ b/README.md
@@ -178,6 +178,35 @@ p2nix.mkPoetryApplication {
 }
 ```
 
+or as a [nixpkgs overlay](https://nixos.org/nixpkgs/manual/#chap-overlays):
+```nix
+let
+  pkgs = import <nixpkgs> {
+    overlays = [
+      # self & super refers to nixpkgs
+      (self: super: {
+
+        # p2self & p2super refers to poetry2nix
+        poetry2nix = super.poetry2nix.overrideScope' (p2nixself: p2nixsuper: {
+
+          # pyself & pysuper refers to python packages
+          defaultPoetryOverrides = p2nixsuper.defaultPoetryOverrides.extend (pyself: pysuper: {
+
+            my-custom-pkg = super.my-custom-pkg.overridePythonAttrs (oldAttrs: { });
+
+          });
+
+        });
+      })
+
+    ];
+  };
+
+in pkgs.poetry2nix.mkPoetryApplication {
+  projectDir = ./.;
+}
+```
+
 ## Contributing
 
 Contributions to this project are welcome in the form of GitHub PRs. Please consider the following before creating PRs: