diff --git a/requirements.txt b/requirements.txt
index 6bad103..e13e76f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,2 +1,2 @@
 numpy
-scipy
+scipy==1.4.1
diff --git a/requirements_dev.txt b/requirements_dev.txt
index 836e3b2..394667e 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -1,3 +1,3 @@
 numpy
-scipy
+scipy==1.4.1
 pytest>=5.0.1
\ No newline at end of file