diff --git a/pyproject.toml b/pyproject.toml
index 55d64a0..747e31b 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -12,6 +12,7 @@ dependencies = [
     "altair<5.4.0",
     "h5py>=3.10.0",
     "matplotlib>=3.8.2",
+    "multiprocess",
     "numba>=0.59.0",
     "numpy>=1.26.2",
     "opencv-python>=4.9.0.80",