diff --git a/renew_cert.sh b/renew_cert.sh
index 441be16..8ac3de5 100755
--- a/renew_cert.sh
+++ b/renew_cert.sh
@@ -45,7 +45,7 @@ main() {
   
   if [ ! -s "$acme_tiny" ]; then
     echo -n "Python script acme_tiny.py is missing. Downloading... "
-    wget -qO "$acme_tiny" https://raw.githubusercontent.com/diafygi/acme-tiny/4.1.0/acme_tiny.py
+    wget -qO "$acme_tiny" https://raw.githubusercontent.com/diafygi/acme-tiny/5.0.1/acme_tiny.py
     if [ $? != 0 ]; then
       echo -ne "\nCould not download acme_tiny.py script.\n"
       rm -f "$acme_tiny"