diff --git a/.github/workflows/test-bt_ocean.yml b/.github/workflows/test-bt_ocean.yml
index 2d939e2..ea83b6c 100644
--- a/.github/workflows/test-bt_ocean.yml
+++ b/.github/workflows/test-bt_ocean.yml
@@ -27,7 +27,7 @@ jobs:
         run: |
           python3 -m venv bt_ocean_venv
           . bt_ocean_venv/bin/activate
-          python3 -m pip install flake8 jax[cpu] keras matplotlib numcodecs pytest pytest-timeout pytest-xdist ruff scipy zarr
+          python3 -m pip install flake8 jax[cpu] keras matplotlib pytest pytest-timeout pytest-xdist ruff scipy zarr
       - name: Lint
         run: |
           . bt_ocean_venv/bin/activate
diff --git a/pyproject.toml b/pyproject.toml
index 9b92291..cd80e09 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -13,7 +13,6 @@ classifiers = [
 dependencies = [
     "jax",
     "keras",
-    "numcodecs",
     "numpy",
     "scipy",
     "zarr"