diff --git a/go-api-examples/real-time-speech-recognition-from-microphone/go.mod b/go-api-examples/real-time-speech-recognition-from-microphone/go.mod
index 5d6a5b784..636d6f797 100644
--- a/go-api-examples/real-time-speech-recognition-from-microphone/go.mod
+++ b/go-api-examples/real-time-speech-recognition-from-microphone/go.mod
@@ -1,3 +1,7 @@
 module real-time-speech-recognition-from-microphone
 
 go 1.12
+
+require (
+	github.com/csukuangfj/portaudio-go v1.0.3
+)