diff --git a/README.md b/README.md
index 572466e..97a573c 100644
--- a/README.md
+++ b/README.md
@@ -14,9 +14,9 @@ You do not need to pay anything or be a member organization.
 CircuitMatter is currently developed in CPython 3.12, the de facto implementation written in C. It is designed with minimal dependencies so that it can also be used on CircuitPython on microcontrollers.
 
 ### Requirements
-After cloning the repo, install dependencies:
+After cloning the repo, install flit for packaging:
 ```shell
-pip install cryptography ecdsa qrcode flit
+pip install flit
 ```
 
 This project is based on [avahi tools](https://avahi.org). It must therefore be installed for it to work properly.
diff --git a/circuitmatter/__init__.py b/circuitmatter/__init__.py
index b1009ed..d778c2d 100644
--- a/circuitmatter/__init__.py
+++ b/circuitmatter/__init__.py
@@ -14,7 +14,7 @@
 from . import session
 from .device_types.utility.root_node import RootNode
 
-__version__ = "0.2.0"
+__version__ = "0.2.1"
 
 
 class CircuitMatter:
diff --git a/pyproject.toml b/pyproject.toml
index 3989f20..382dc12 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -8,6 +8,13 @@ authors = [{name = "Scott Shawcroft", email = "scott@adafruit.com"}]
 license = {file = "LICENSE"}
 classifiers = ["License :: OSI Approved :: MIT License"]
 dynamic = ["version", "description"]
+requires-python = ">=3.12"
+readme = "README.md"
+dependencies = [
+    "cryptography",
+    "ecdsa",
+    "qrcode"
+]
 
 [project.urls]
 Home = "https://github.com/adafruit/circuitmatter"
diff --git a/requirements.txt b/requirements.txt
deleted file mode 100644
index acc65ac..0000000
--- a/requirements.txt
+++ /dev/null
@@ -1,3 +0,0 @@
-cryptography
-ecdsa
-qrcode