diff --git a/pyproject.toml b/pyproject.toml
index 4ee3ade1..55f2f277 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -72,7 +72,7 @@ medcat = [
     "medcat",
 ]
 dask = [
-    "c[dask]",
+    "anndata[dask]",
     "dask-ml",
 ]
 dev = [