diff --git a/mk-self-signed-ssl-certificate b/mk-self-signed-ssl-certificate
index 4b3bcd4..8372aa9 100755
--- a/mk-self-signed-ssl-certificate
+++ b/mk-self-signed-ssl-certificate
@@ -9,4 +9,4 @@ openssl genrsa -des3 -passout pass:x -out ${name}.pass.key 2048
 openssl rsa -passin pass:x -in ${name}.pass.key -out ${name}.key
 rm ${name}.pass.key
 openssl req -new -sha256 -key ${name}.key -out ${name}.csr
-openssl x509 -req -sha256 -days 365 -in ${name}.csr -signkey ${name}.key -out ${name}.crt
+openssl x509 -req -sha256 -days 3650 -in ${name}.csr -signkey ${name}.key -out ${name}.crt