diff --git a/.github/workflows/codspeed.yml b/.github/workflows/codspeed.yml
index c9e31cb..7475832 100644
--- a/.github/workflows/codspeed.yml
+++ b/.github/workflows/codspeed.yml
@@ -43,6 +43,6 @@ jobs:
       # - run: rm tests/__init__.py
 
       - name: Run CodSpeed benchmarks
-        uses: CodSpeedHQ/action@v1
+        uses: CodSpeedHQ/action@v2
         with:
           run: pytest tests/benchmarks/ --codspeed
diff --git a/Cargo.toml b/Cargo.toml
index bc18a23..184e8c8 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -9,10 +9,10 @@ license = "MIT"
 
 [dependencies]
 downsample_rs = { path = "downsample_rs", features = ["half"]}
-pyo3 = { version = "0.19", features = ["extension-module"] }
-numpy = { version = "0.19", features = ["half"] }
-half = { version = "2.1", default-features = false }
-paste = { version = "1.0.9", default-features = false }
+pyo3 = { version = "0.20", features = ["extension-module"] }
+numpy = { version = "0.20", features = ["half"] }
+half = { version = "2.3.1", default-features = false }
+paste = { version = "1.0.14", default-features = false }
 
 [lib]
 name = "tsdownsample"
diff --git a/downsample_rs/Cargo.toml b/downsample_rs/Cargo.toml
index ca0ee16..107469b 100644
--- a/downsample_rs/Cargo.toml
+++ b/downsample_rs/Cargo.toml
@@ -9,13 +9,13 @@ license = "MIT"
 [dependencies]
 # TODO: perhaps use polars?
 argminmax = { version = "0.6.1", features = ["half"] }
-half = { version = "2.1", default-features = false , features=["num-traits"], optional = true}
-num-traits = { version = "0.2.15", default-features = false }
+half = { version = "2.3.1", default-features = false , features=["num-traits"], optional = true}
+num-traits = { version = "0.2.17", default-features = false }
 once_cell = "1"
 rayon = { version = "1.8.0", default-features = false }
 
 [dev-dependencies]
-rstest = { version = "0.18.1", default-features = false }
+rstest = { version = "0.18.2", default-features = false }
 rstest_reuse = { version = "0.6", default-features = false }
 criterion = "0.5.1"
 dev_utils = { path = "dev_utils" }
diff --git a/downsample_rs/src/lib.rs b/downsample_rs/src/lib.rs
index 1e222c0..409294d 100644
--- a/downsample_rs/src/lib.rs
+++ b/downsample_rs/src/lib.rs
@@ -18,6 +18,7 @@ pub(crate) mod types;
 use once_cell::sync::Lazy;
 use rayon::{ThreadPool, ThreadPoolBuilder};
 
+// Inspired by: https://github.com/pola-rs/polars/blob/9a69062aa0beb2a1bc5d57294cac49961fc91058/crates/polars-core/src/lib.rs#L49
 pub static POOL: Lazy<ThreadPool> = Lazy::new(|| {
     ThreadPoolBuilder::new()
         .num_threads(