diff --git a/pyproject.toml b/pyproject.toml
index 2ef105c0..fabf25ba 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -37,7 +37,6 @@ dependencies = [
     "optax",
     "orbax-checkpoint",
     "pandas",
-    "regex",
     "scikit-image",
     "scikit-learn",
     "tabulate",  # used by pandas.DataFrame.to_markdown (for logging context)