diff --git a/internal/dnsproxy/proxy.go b/internal/dnsproxy/proxy.go
index f53b6fc5..ed572f61 100644
--- a/internal/dnsproxy/proxy.go
+++ b/internal/dnsproxy/proxy.go
@@ -1,6 +1,7 @@
 package dnsproxy
 
 import (
+	"fmt"
 	"net"
 	"runtime/debug"
 	"time"