diff --git a/requirements.txt b/requirements.txt
index e9a0504285f5bc0d83f669aa6d1d9de9955fc1b0..f05fbbe6ada5640b7ca46df3ac2319cc42c35ef0 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,2 +1 @@
-numpy
-cmath
+scipy==1.5.1