diff --git a/internal/test/integration_test.go b/internal/test/integration_test.go
index 23f8a61..65050e7 100644
--- a/internal/test/integration_test.go
+++ b/internal/test/integration_test.go
@@ -23,7 +23,7 @@ import (
 )
 
 const numConns = 200 // -race option limits the number of goroutines to 8192
-const delayBeforeTestingConnClose = 500 * time.Millisecond
+const delayBeforeTestingConnClose = 700 * time.Millisecond
 
 func serveTCPEcho(l net.Listener) {
 	for {