diff --git a/macos.py b/macos.py
index e0d7f79..3b1915d 100644
--- a/macos.py
+++ b/macos.py
@@ -309,7 +309,7 @@ def _maybe_notify_update_async() -> None:
             ):
                 webbrowser.open(url)
         except Exception as exc:
-            log.debug("Update check failed: %s", exc)
+            log.warning("Update check failed: %s", exc)
 
     threading.Thread(target=_work, daemon=True, name="update-check").start()
 
diff --git a/proxy/fake_tls.py b/proxy/fake_tls.py
index 531c7b7..ea6379d 100644
--- a/proxy/fake_tls.py
+++ b/proxy/fake_tls.py
@@ -213,7 +213,7 @@ async def proxy_to_masking_domain(reader, writer, initial_data: bytes,
         up_reader, up_writer = await asyncio.wait_for(
             asyncio.open_connection(domain, 443), timeout=10)
     except Exception as exc:
-        log.debug("[%s] masking: cannot connect to %s:443: %s",
+        log.warning("[%s] masking: cannot connect to %s:443: %s",
                   label, domain, repr(exc))
         return
 
diff --git a/proxy/tg_ws_proxy.py b/proxy/tg_ws_proxy.py
index 45bf961..8039546 100644
--- a/proxy/tg_ws_proxy.py
+++ b/proxy/tg_ws_proxy.py
@@ -312,7 +312,7 @@ async def _handle_client(reader, writer, secret: bytes):
         result = _try_handshake(handshake, secret)
         if result is None:
             stats.connections_bad += 1
-            log.debug("[%s] bad handshake (wrong secret or proto)", label)
+            log.warning("[%s] bad handshake (wrong secret or proto)", label)
             try:
                 drain_src = tls_stream or reader
                 while await drain_src.read(4096):
diff --git a/utils/tray_common.py b/utils/tray_common.py
index 9cfbc9e..3e3c70f 100644
--- a/utils/tray_common.py
+++ b/utils/tray_common.py
@@ -391,7 +391,7 @@ def maybe_notify_update(
             ):
                 webbrowser.open(url)
         except Exception as exc:
-            log.debug("Update check failed: %s", repr(exc))
+            log.warning("Update check failed: %s", repr(exc))
 
     threading.Thread(target=_work, daemon=True, name="update-check").start()