diff --git a/.builder/actions/tls_server_setup.py b/.builder/actions/tls_server_setup.py
index f17a61e9d..512c2d5b5 100644
--- a/.builder/actions/tls_server_setup.py
+++ b/.builder/actions/tls_server_setup.py
@@ -61,6 +61,7 @@ def run(self, env):
                                "-cert", "unittests.crt",
                                "-CAfile", "ca_root.crt",
                                "-debug", "-state",
+                               "-servername", "localhost",
                                "-tls1_3",
                                ], cwd=dir, stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
         p2.poll()