diff --git a/Cargo.toml b/Cargo.toml
index 7e99523..18a0716 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -8,8 +8,8 @@ members = [
 ]
 
 [workspace.dependencies]
-polars = { version = "0.38.0", default-features = false }
-polars-core = { version = "0.38.0", default-features = false }
-polars-ffi = { version = "0.38.0", default-features = false }
-polars-plan = { version = "0.38.0", default-feautres = false }
-polars-lazy = { version = "0.38.0", default-features = false }
+polars = { version = "0.39.0", default-features = false }
+polars-core = { version = "0.39.0", default-features = false }
+polars-ffi = { version = "0.39.0", default-features = false }
+polars-plan = { version = "0.39.0", default-feautres = false }
+polars-lazy = { version = "0.39.0", default-features = false }
diff --git a/example/derive_expression/expression_lib/Cargo.toml b/example/derive_expression/expression_lib/Cargo.toml
index 75ea2d5..8057b19 100644
--- a/example/derive_expression/expression_lib/Cargo.toml
+++ b/example/derive_expression/expression_lib/Cargo.toml
@@ -10,7 +10,7 @@ crate-type = ["cdylib"]
 
 [dependencies]
 polars = { workspace = true, features = ["fmt", "dtype-date", "timezones"], default-features = false }
-pyo3 = { version = "0.20", features = ["abi3-py38"] }
+pyo3 = { version = "0.21", features = ["abi3-py38"] }
 pyo3-polars = { version = "*", path = "../../../pyo3-polars", features = ["derive"] }
 serde = { version = "1", features = ["derive"] }
 rayon = "1.7.0"
diff --git a/example/derive_expression/expression_lib/src/distances.rs b/example/derive_expression/expression_lib/src/distances.rs
index 943aa4a..beabf73 100644
--- a/example/derive_expression/expression_lib/src/distances.rs
+++ b/example/derive_expression/expression_lib/src/distances.rs
@@ -1,4 +1,3 @@
-use polars::datatypes::PlHashSet;
 use polars::export::arrow::array::PrimitiveArray;
 use polars::export::num::Float;
 use polars::prelude::*;
diff --git a/example/derive_expression/expression_lib/src/expressions.rs b/example/derive_expression/expression_lib/src/expressions.rs
index c41640e..cc0e75e 100644
--- a/example/derive_expression/expression_lib/src/expressions.rs
+++ b/example/derive_expression/expression_lib/src/expressions.rs
@@ -196,12 +196,14 @@ fn convert_timezone(input_fields: &[Field], kwargs: TimeZone) -> PolarsResult<Fi
     })
 }
 
+/// This expression is for demonstration purposes as we have a dedicated
+/// `convert_time_zone` in Polars.
 #[polars_expr(output_type_func_with_kwargs=convert_timezone)]
 fn change_time_zone(input: &[Series], kwargs: TimeZone) -> PolarsResult<Series> {
     let input = &input[0];
     let ca = input.datetime()?;
 
-    ca.clone()
-        .convert_time_zone(kwargs.tz)
-        .map(|ca| ca.into_series())
+    let mut out = ca.clone();
+    out.set_time_zone(kwargs.tz)?;
+    Ok(out.into_series())
 }
diff --git a/example/extend_polars_python_dispatch/extend_polars/Cargo.toml b/example/extend_polars_python_dispatch/extend_polars/Cargo.toml
index aea69da..d24467e 100644
--- a/example/extend_polars_python_dispatch/extend_polars/Cargo.toml
+++ b/example/extend_polars_python_dispatch/extend_polars/Cargo.toml
@@ -12,6 +12,6 @@ crate-type = ["cdylib"]
 polars = { workspace = true, features = ["fmt"] }
 polars-core = { workspace = true }
 polars-lazy = { workspace = true }
-pyo3 = { version = "0.20", features = ["extension-module"] }
+pyo3 = { version = "0.21", features = ["extension-module"] }
 pyo3-polars = { version = "*", path = "../../../pyo3-polars", features = ["lazy"] }
-rayon = "1.6"
+rayon = "1.10"
diff --git a/pyo3-polars-derive/Cargo.toml b/pyo3-polars-derive/Cargo.toml
index e9dc992..1e415d7 100644
--- a/pyo3-polars-derive/Cargo.toml
+++ b/pyo3-polars-derive/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "pyo3-polars-derive"
-version = "0.6.0"
+version = "0.7.0"
 edition = "2021"
 license = "MIT"
 readme = "README.md"
diff --git a/pyo3-polars-derive/src/attr.rs b/pyo3-polars-derive/src/attr.rs
index 21838bf..e642068 100644
--- a/pyo3-polars-derive/src/attr.rs
+++ b/pyo3-polars-derive/src/attr.rs
@@ -6,6 +6,7 @@ use syn::Token;
 
 #[derive(Clone, Debug)]
 pub struct KeyWordAttribute<K, V> {
+    #[allow(dead_code)]
     pub kw: K,
     pub value: V,
 }
diff --git a/pyo3-polars/Cargo.toml b/pyo3-polars/Cargo.toml
index 6071faa..ec879fe 100644
--- a/pyo3-polars/Cargo.toml
+++ b/pyo3-polars/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "pyo3-polars"
-version = "0.12.0"
+version = "0.13.0"
 edition = "2021"
 license = "MIT"
 readme = "../README.md"
@@ -16,8 +16,8 @@ polars-core = { workspace = true, default-features = false }
 polars-ffi = { workspace = true, optional = true }
 polars-lazy = { workspace = true, optional = true }
 polars-plan = { workspace = true, optional = true }
-pyo3 = "0.20.0"
-pyo3-polars-derive = { version = "0.6.0", path = "../pyo3-polars-derive", optional = true }
+pyo3 = "0.21.0"
+pyo3-polars-derive = { version = "0.7.0", path = "../pyo3-polars-derive", optional = true }
 serde = { version = "1", optional = true }
 serde-pickle = { version = "1", optional = true }
 thiserror = "1"
diff --git a/pyo3-polars/src/ffi/to_py.rs b/pyo3-polars/src/ffi/to_py.rs
index 9b4fa3a..e6debf9 100644
--- a/pyo3-polars/src/ffi/to_py.rs
+++ b/pyo3-polars/src/ffi/to_py.rs
@@ -4,7 +4,11 @@ use pyo3::ffi::Py_uintptr_t;
 use pyo3::prelude::*;
 
 /// Arrow array to Python.
-pub(crate) fn to_py_array(array: ArrayRef, py: Python, pyarrow: &PyModule) -> PyResult<PyObject> {
+pub(crate) fn to_py_array(
+    array: ArrayRef,
+    py: Python,
+    pyarrow: Bound<'_, PyModule>,
+) -> PyResult<PyObject> {
     let schema = Box::new(ffi::export_field_to_c(&ArrowField::new(
         "",
         array.data_type().clone(),
diff --git a/pyo3-polars/src/lib.rs b/pyo3-polars/src/lib.rs
index 3e4479b..eec501f 100644
--- a/pyo3-polars/src/lib.rs
+++ b/pyo3-polars/src/lib.rs
@@ -53,7 +53,7 @@ use crate::ffi::to_py::to_py_array;
 use polars::export::arrow;
 use polars::prelude::*;
 use pyo3::ffi::Py_uintptr_t;
-use pyo3::{FromPyObject, IntoPy, PyAny, PyObject, PyResult, Python, ToPyObject};
+use pyo3::prelude::*;
 
 #[cfg(feature = "lazy")]
 use {polars_lazy::frame::LazyFrame, polars_plan::logical_plan::LogicalPlan};
@@ -162,7 +162,7 @@ impl<'a> FromPyObject<'a> for PyLazyFrame {
 
 impl IntoPy<PyObject> for PySeries {
     fn into_py(self, py: Python<'_>) -> PyObject {
-        let polars = py.import("polars").expect("polars not installed");
+        let polars = py.import_bound("polars").expect("polars not installed");
         let s = polars.getattr("Series").unwrap();
         match s.getattr("_import_from_c") {
             // Go via polars
@@ -208,7 +208,7 @@ impl IntoPy<PyObject> for PySeries {
                 let s = self.0.rechunk();
                 let name = s.name();
                 let arr = s.to_arrow(0, false);
-                let pyarrow = py.import("pyarrow").expect("pyarrow not installed");
+                let pyarrow = py.import_bound("pyarrow").expect("pyarrow not installed");
 
                 let arg = to_py_array(arr, py, pyarrow).unwrap();
                 let s = polars.call_method1("from_arrow", (arg,)).unwrap();
@@ -228,7 +228,7 @@ impl IntoPy<PyObject> for PyDataFrame {
             .map(|s| PySeries(s.clone()).into_py(py))
             .collect::<Vec<_>>();
 
-        let polars = py.import("polars").expect("polars not installed");
+        let polars = py.import_bound("polars").expect("polars not installed");
         let df_object = polars.call_method1("DataFrame", (pyseries,)).unwrap();
         df_object.into_py(py)
     }
diff --git a/rust-toolchain.toml b/rust-toolchain.toml
index 4a5741c..9b6fc43 100644
--- a/rust-toolchain.toml
+++ b/rust-toolchain.toml
@@ -1,2 +1,2 @@
 [toolchain]
-channel = "nightly-2023-10-12"
+channel = "nightly-2024-03-28"