diff --git a/pyproject.toml b/pyproject.toml
index be171d18..1a6b8c90 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -33,6 +33,7 @@ dependencies = [
 #    "numpy @ https://github.com/numpy/numpy/releases/download/v1.24.4/numpy-1.24.4.tar.gz ; sys_platform == 'darwin' and platform_machine == 'arm64'",
     "numpyro",
     "prettytable",
+    "quadax @ https//github.com/f0uriest/quadax@640afd5bacc1a42f1e3c55c266fc5a02f668b2d1",
     "tinygp",
     "tqdm",
 ]