diff --git a/pyproject.toml b/pyproject.toml
index 6b2094a..65c96bd 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -7,7 +7,7 @@ name = "AllanTools"
 version = "2024.04"
 dependencies = [
   "numpy",
-  "scipy",
+  "scipy>=1.6.0",
   "numpydoc",
   "matplotlib",
   "pytest",
diff --git a/requirements.txt b/requirements.txt
index e574087..f26ef3a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 numpy
-scipy
+scipy>=1.6.0
 numpydoc
 matplotlib
 pytest