diff --git a/connection_test.go b/connection_test.go
index de2e1721..9780458c 100644
--- a/connection_test.go
+++ b/connection_test.go
@@ -398,7 +398,7 @@ func TestTimeout(t *testing.T) {
 		testHandler := onErrorTestHandler{newTestHandler(t), onError}
 		ts.Register(raw.Wrap(testHandler), "block")
 
-		ctx, cancel := NewContext(testutils.Timeout(15 * time.Millisecond))
+		ctx, cancel := NewContext(testutils.Timeout(25 * time.Millisecond))
 		defer cancel()
 
 		_, _, _, err := raw.Call(ctx, ts.Server(), ts.HostPort(), ts.ServiceName(), "block", []byte("Arg2"), []byte("Arg3"))
@@ -662,7 +662,7 @@ func TestReadTimeout(t *testing.T) {
 func TestWriteTimeout(t *testing.T) {
 	testutils.WithTestServer(t, nil, func(ts *testutils.TestServer) {
 		ch := ts.Server()
-		ctx, cancel := NewContext(testutils.Timeout(15 * time.Millisecond))
+		ctx, cancel := NewContext(testutils.Timeout(25 * time.Millisecond))
 		defer cancel()
 
 		call, err := ch.BeginCall(ctx, ts.HostPort(), ch.ServiceName(), "call", nil)