diff --git a/pyproject.toml b/pyproject.toml
index a2f40bb..3799c10 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -7,7 +7,7 @@ license = "MIT"
 readme = "README.rst"
 homepage = "https://github.com/wilhelm-lab/spectrum_fundamentals"
 repository = "https://github.com/wilhelm-lab/spectrum_fundamentals"
-documentation = "https://spectrum_fundamentals.readthedocs.io"
+documentation = "https://spectrum-fundamentals.readthedocs.io"
 packages = [
     { include = "spectrum_fundamentals" },
 ]