diff --git a/debian/postinst b/debian/postinst
index 7ab3b89..4ede83c 100755
--- a/debian/postinst
+++ b/debian/postinst
@@ -109,6 +109,12 @@ log("Upgrading pip to the latest version")
 # Update pip
 handleStatus(sc(["pip3", "install", "--upgrade", "pip"]))
 
+
+log("Upgrading numpy to the lateset version")
+
+# Update numpy
+handleStatus(subprocess.call(["pip3", "install", "--upgrade", "numpy"]))
+
 log("Downloading and unpacking data files")
 
 # Run the bash script to download and unpack the .dat files needed