diff --git a/thc-net/pyproject.toml b/thc-net/pyproject.toml
index 67a4beb..de69341 100755
--- a/thc-net/pyproject.toml
+++ b/thc-net/pyproject.toml
@@ -16,7 +16,7 @@ notebook = "6.0.3"
 ipywidgets = "7.5.1"
 requests = "2.23.0"
 matplotlib = "3.2.1"
-numpy = "1.18.5" 
+numpy = "1.24.2" 
 pandas = "1.0.4" 
 nb-black = "1.0.7"
 black = "19.10b0"