diff --git a/go.mod b/go.mod
index 41b0a4a..c66c898 100644
--- a/go.mod
+++ b/go.mod
@@ -4,6 +4,7 @@ go 1.20
 
 require (
 	github.com/google/go-cmp v0.5.9
+	github.com/hashicorp/go-cleanhttp v0.5.2
 	golang.org/x/sync v0.2.0
 	nhooyr.io/websocket v1.8.7
 )
diff --git a/server.go b/server.go
index c3347e6..19291da 100644
--- a/server.go
+++ b/server.go
@@ -67,7 +67,11 @@ func (s Server) routes(ctx context.Context) {
 // newWebSocketHandler upgrades a request to a long-running websocket connection.
 func (s Server) newWebSocketHandler() http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
-		conn, err := websocket.Accept(w, r, nil)
+		conn, err := websocket.Accept(w, r, &websocket.AcceptOptions{
+			// prevents kNWErrorDomainPOSIX error on safari
+			// https://github.com/nhooyr/websocket/issues/218
+			CompressionMode: websocket.CompressionDisabled,
+		})
 		if err != nil {
 			s.Log.Printf("websocket upgrade failed: %s", err)
 			return