diff --git a/lib/dmcerts_openssl_client.cnf b/lib/dmcerts_openssl_client.cnf
index fd5066b..8fd6c69 100644
--- a/lib/dmcerts_openssl_client.cnf
+++ b/lib/dmcerts_openssl_client.cnf
@@ -24,7 +24,7 @@ cert_opt = ca_default
 
 copy_extensions = copy
 
-default_days = 3650
+default_days = 10950
 default_crl_days = 30
 default_md = sha256
 preserve = no