diff --git a/sams_etal_2020_evolutionary_applications/requirements.txt b/sams_etal_2020_evolutionary_applications/requirements.txt
index fc09700..aa91d85 100644
--- a/sams_etal_2020_evolutionary_applications/requirements.txt
+++ b/sams_etal_2020_evolutionary_applications/requirements.txt
@@ -1,5 +1,5 @@
 begins==0.9
 dabest==0.3.0
 matplotlib==3.1.2
-numpy==1.17.3
+numpy==1.22.0
 pandas==1.0.3