diff --git a/pyproject.toml b/pyproject.toml
index 1365fb6..cd724c0 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -19,7 +19,7 @@ classifiers = [
 dependencies = [
     "pyscf==1.7.5",
     "h5py==3.0",
-    "scipy==1.4.1",
+    "scipy==1.11.1",
     "numpy==1.18",
     "opt_einsum",
     "jupyter",
diff --git a/requirements.txt b/requirements.txt
index 65a74f8..33d1a2f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,6 +1,6 @@
 pyscf==1.7.5
 h5py==3.0
-scipy==1.4.1
+scipy==1.11.1
 numpy==1.18
 opt_einsum
 jupyter