diff --git a/Cargo.lock b/Cargo.lock
index 7ab19b3..54fef39 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1409,6 +1409,7 @@ dependencies = [
  "crossbeam",
  "futures",
  "log",
+ "ndarray",
  "polars",
  "pyo3",
  "pyo3-polars",
diff --git a/Cargo.toml b/Cargo.toml
index 30420a6..6af66a2 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -28,12 +28,12 @@ rayon = "1.5"
 tokio = "1.41.1"
 futures = "0.3"
 
-# pyo3 = { version = "0.23.1", features = ["extension-module"] }
-# pyo3 = { version = "0.21.2", features = ["extension-module"] }
-# pyo3 = { version = "*", features = ["abi3-py38"] }
-# polars-core = { version = "*" }
+ndarray = { version = "*" }
+
 pyo3 = { version = "*", features = ["extension-module", "abi3-py37"] }
+
 pyo3-polars = { version = "*" }
+
 polars = { version = "*", features = [
     "lazy",
     "temporal",