diff --git a/ncat/ncat_ssl.c b/ncat/ncat_ssl.c
index b48f6675a..72d91534c 100644
--- a/ncat/ncat_ssl.c
+++ b/ncat/ncat_ssl.c
@@ -588,7 +588,7 @@ static int ssl_gen_cert(X509 **cert, EVP_PKEY **key)
 #endif
 
     /* Sign it. */
-    if (X509_sign(*cert, *key, EVP_sha1()) == 0)
+    if (X509_sign(*cert, *key, EVP_sha256()) == 0)
         goto err;
 
     return 1;