diff --git a/browser_cli/client.py b/browser_cli/client.py
index 9dca4b5..3bffe7b 100644
--- a/browser_cli/client.py
+++ b/browser_cli/client.py
@@ -250,6 +250,7 @@ def _send_remote(endpoint: str, msg: dict, private_key=None) -> bytes | None:
         if port == 443:
             import ssl
             ctx = ssl.create_default_context()
+            ctx.set_alpn_protocols(["browser-cli"])  # prevent h2/http1.1 ALPN confusion
             sock = ctx.wrap_socket(raw_sock, server_hostname=host)
         else:
             sock = raw_sock