diff --git a/pyproject.toml b/pyproject.toml
new file mode 100644
index 0000000..ffeacd8
--- /dev/null
+++ b/pyproject.toml
@@ -0,0 +1,15 @@
+[tool.poetry]
+name = "heatmiserv3"
+version = "1.2.3"
+description = "A library to interact with Heatmiser Themostats using V3 protocol."
+authors = ["Andy Loughran <andy@lockran.com>"]
+license = "Apache 2"
+readme = "README.md"
+
+[tool.poetry.dependencies]
+python = "^3.9"
+
+
+[build-system]
+requires = ["poetry-core"]
+build-backend = "poetry.core.masonry.api"