diff --git a/pyproject.toml b/pyproject.toml
index 8ea9aac..7312b76 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -10,6 +10,7 @@ dependencies = [
     "pillow>=10.1.0",
     "jaxtyping>=0.2.23",
     "packaging>=23.2",
+    "numpy>=1.26.4",
 ]
 readme = "README.md"
 requires-python = ">= 3.10"
diff --git a/requirements.lock b/requirements.lock
index aeb101b..e2dcbb2 100644
--- a/requirements.lock
+++ b/requirements.lock
@@ -145,6 +145,7 @@ numpy==1.26.4
     # via pandas
     # via pyarrow
     # via pywavelets
+    # via refiners
     # via torchvision
     # via transformers
 nvidia-cublas-cu12==12.1.3.1