diff --git a/src/titiler/xarray/pyproject.toml b/src/titiler/xarray/pyproject.toml
index 21d269d4..3d1f3ca3 100644
--- a/src/titiler/xarray/pyproject.toml
+++ b/src/titiler/xarray/pyproject.toml
@@ -38,7 +38,7 @@ dependencies = [
 
 [project.optional-dependencies]
 full = [
-    "zarr",
+    "zarr~=2.0",
     "h5netcdf",
     "fsspec",
     "s3fs",