diff --git a/check-version.sh b/check-version.sh
new file mode 100644
index 0000000..63b412a
--- /dev/null
+++ b/check-version.sh
@@ -0,0 +1,8 @@
+#!/bin/bash
+
+URL="https://archive.mozilla.org/pub/security/nss/releases/"
+
+# Get version number from tag name
+VERSION=$(curl -s -L "$URL" | grep -o -E 'NSS_[0-9]{1,}_[0-9]{1,}(_[0-9]{1,})?_RTM' | grep -o -E '[0-9]{1,}_[0-9]{1,}(_[0-9]{1,})?' | tr '_' '.' | sort -V | tail -n1)
+
+echo "$VERSION"