diff --git a/pyproject.toml b/pyproject.toml
index 7d42aeac..9429d75c 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -24,7 +24,7 @@ readme = "README.rst"
 requires-python = ">=3.10"
 dependencies = [
     "pip >= 20",
-    "arviz>=0.18.0",
+    "arviz@git+https://github.com/arviz-devs/arviz#egg=39eddd6",
     "importlib_resources >= 3.2",
     "numpy",
     "scipy",