Index: src/OpenVpn/CA/VpnCa.php
--- src/OpenVpn/CA/VpnCa.php.orig
+++ src/OpenVpn/CA/VpnCa.php
@@ -106,7 +106,7 @@ class VpnCa implements CaInterface
 
     private function execVpnCa(string $cmdArgs): void
     {
-        self::exec(sprintf('CA_DIR=%s CA_KEY_TYPE=EdDSA %s %s', $this->caDir, $this->vpnCaPath, $cmdArgs));
+        self::exec(sprintf('CA_DIR=%s CA_KEY_TYPE=ECDSA %s %s', $this->caDir, $this->vpnCaPath, $cmdArgs));
     }
 
     private static function exec(string $execCmd): void
