diff --git a/cmdeploy/src/cmdeploy/acmetool/target.yaml.j2 b/cmdeploy/src/cmdeploy/acmetool/target.yaml.j2
index 97163c4f..ee15a0af 100644
--- a/cmdeploy/src/cmdeploy/acmetool/target.yaml.j2
+++ b/cmdeploy/src/cmdeploy/acmetool/target.yaml.j2
@@ -2,6 +2,7 @@ request:
   provider: https://acme-v02.api.letsencrypt.org/directory
   key:
     type: rsa
+    rsa-size: 4096
   challenge:
     webroot-paths:
     - /var/www/html/.well-known/acme-challenge