diff --git a/requirements.txt b/requirements.txt
index 1f9e9a4..361cfcd 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -9,7 +9,7 @@
 # Python version = 3.9.12
 
 # Data manipulation (note that some pre-Dec 2022 projects use pandas 1.3.5)
-numpy==1.21.5
+numpy==1.22.0
 pandas==1.5.2
 
 # Excel output