diff --git a/pyproject.toml b/pyproject.toml
index 4e8d2cc..c4862cd 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -7,8 +7,8 @@ name = "griml"
 version = "0.1.1"
 description = "A workflow for classifying ice marginal lakes from satellite imagery and compiling lake inventories"
 readme = "README.md"
-readme-content-type = "text/markdown"
 authors = [{name = "Penelope How", email = "pho@geus.dk"}]
+maintainers = [{name = "Penelope How", email = "pho@geus.dk"}]
 license = {text = "MIT"}
 keywords = ["glaciology", "remote sensing", "cryosphere", "ice marginal lake", "ESA"]
 classifiers = [
@@ -29,7 +29,7 @@ dependencies = [
     "Shapely",
     "rasterio"
 ]
-python_requires = ">=3.8"
+requires-python = ">= 3.8"
 
 [project.urls]
 "Homepage" = "https://github.com/GEUS-Glaciology-and-Climate/GrIML"