diff --git a/setup.cfg b/setup.cfg
index 0d4a5dc..7401d3d 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -24,7 +24,6 @@ project_urls =
 packages = find:
 install_requires =
     numpy
-    opt-einsum
     tad-mctc
     torch
 python_requires = >=3.8