diff --git a/ext/openssl/tests/CertificateGenerator.inc b/ext/openssl/tests/CertificateGenerator.inc
index 6fd73e0e9bed1..0665b0a737f61 100644
--- a/ext/openssl/tests/CertificateGenerator.inc
+++ b/ext/openssl/tests/CertificateGenerator.inc
@@ -102,7 +102,7 @@ class CertificateGenerator
 [ req ]
 distinguished_name = req_distinguished_name
 default_md = sha256
-default_bits = 1024
+default_bits = 2048
 
 [ req_distinguished_name ]