diff --git a/pmtiles/write_test.go b/pmtiles/write_test.go
index 380cba0..aa227c6 100644
--- a/pmtiles/write_test.go
+++ b/pmtiles/write_test.go
@@ -1,7 +1,6 @@
 package pmtiles
 
 import (
-	"github.com/stretchr/testify/assert"
 	"io"
 	"io/ioutil"
 	"os"