diff --git a/platforms/firmata/client/client_test.go b/platforms/firmata/client/client_test.go
index c903b6374..27ecafe9e 100644
--- a/platforms/firmata/client/client_test.go
+++ b/platforms/firmata/client/client_test.go
@@ -11,7 +11,7 @@ import (
 	"github.com/stretchr/testify/require"
 )
 
-const semPublishWait = 20 * time.Millisecond
+const semPublishWait = 30 * time.Millisecond
 
 type readWriteCloser struct {
 	id string