diff --git a/go.mod b/go.mod
index d0c8e65..6ba78df 100644
--- a/go.mod
+++ b/go.mod
@@ -1,5 +1,3 @@
 module github.com/tidwall/tinyqueue
 
 go 1.15
-
-require github.com/stretchr/testify v1.7.0
diff --git a/go.sum b/go.sum
deleted file mode 100644
index b380ae4..0000000
--- a/go.sum
+++ /dev/null
@@ -1,10 +0,0 @@
-github.com/davecgh/go-spew v1.1.0 h1:ZDRjVQ15GmhC3fiQ8ni8+OwkZQO4DARzQgrnXU1Liz8=
-github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
-github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
-github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
-github.com/stretchr/testify v1.7.0 h1:nwc3DEeHmmLAfoZucVR881uASk0Mfjw8xYJ99tb5CcY=
-github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
-gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
-gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c h1:dUUwHk2QECo/6vqA44rthZ8ie2QXMNeKRTHCNY2nXvo=
-gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
diff --git a/tinyqueue_test.go b/tinyqueue_test.go
index d3d7418..de1944d 100644
--- a/tinyqueue_test.go
+++ b/tinyqueue_test.go
@@ -2,15 +2,20 @@ package tinyqueue
 
 import (
 	"math/rand"
+	"reflect"
 	"sort"
 	"testing"
 	"time"
-
-	"github.com/stretchr/testify/assert"
 )
 
 type floatValue float64
 
+func assertEqual(t *testing.T, a, b interface{}) {
+	if !reflect.DeepEqual(a, b) {
+		t.Fatalf("'%v' != '%v'", a, b)
+	}
+}
+
 func (a floatValue) Less(b Item) bool {
 	return a < b.(floatValue)
 }
@@ -34,12 +39,12 @@ func TestMaintainsPriorityQueue(t *testing.T) {
 	for i := 0; i < len(data); i++ {
 		q.Push(data[i])
 	}
-	assert.Equal(t, q.Peek(), sorted[0])
+	assertEqual(t, q.Peek(), sorted[0])
 	var result []Item
 	for q.length > 0 {
 		result = append(result, q.Pop())
 	}
-	assert.Equal(t, result, sorted)
+	assertEqual(t, result, sorted)
 }
 
 func TestAcceptsDataInConstructor(t *testing.T) {
@@ -48,7 +53,7 @@ func TestAcceptsDataInConstructor(t *testing.T) {
 	for q.length > 0 {
 		result = append(result, q.Pop())
 	}
-	assert.Equal(t, result, sorted)
+	assertEqual(t, result, sorted)
 }
 func TestHandlesEdgeCasesWithFewElements(t *testing.T) {
 	q := New(nil)
@@ -59,7 +64,7 @@ func TestHandlesEdgeCasesWithFewElements(t *testing.T) {
 	q.Pop()
 	q.Push(floatValue(2))
 	q.Push(floatValue(1))
-	assert.Equal(t, float64(q.Pop().(floatValue)), 1.0)
-	assert.Equal(t, float64(q.Pop().(floatValue)), 2.0)
-	assert.Equal(t, q.Pop(), nil)
+	assertEqual(t, float64(q.Pop().(floatValue)), 1.0)
+	assertEqual(t, float64(q.Pop().(floatValue)), 2.0)
+	assertEqual(t, q.Pop(), nil)
 }