diff --git a/collection_test.go b/collection_test.go
index ed23d25..6a68142 100644
--- a/collection_test.go
+++ b/collection_test.go
@@ -1,16 +1,17 @@
 package collections
 
 import (
-	"embed"
 	"strconv"
 	"strings"
 	"testing"
 
+	_ "embed"
+
 	"github.com/stretchr/testify/require"
 )
 
 //go:embed collection_test.csv
-var testData embed.FS
+var testData []byte
 
 type person struct {
 	ID        int
@@ -20,8 +21,7 @@ type person struct {
 }
 
 func TestCollection(t *testing.T) {
-	rawData, _ := testData.ReadFile("collection_test.csv")
-	data := strings.Split(string(rawData), "\n")
+	data := strings.Split(string(testData), "\n")
 
 	lines := OfSlice(data).Skip(1).Filter(func(s string) bool {
 		return strings.Contains(s, ",")
diff --git a/go.mod b/go.mod
index 76e30a9..56f60ba 100644
--- a/go.mod
+++ b/go.mod
@@ -2,10 +2,13 @@ module pkg.icikowski.pl/collections
 
 go 1.20
 
+require (
+	github.com/stretchr/testify v1.8.4
+	golang.org/x/text v0.11.0
+)
+
 require (
 	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
-	github.com/stretchr/testify v1.8.4 // indirect
-	golang.org/x/text v0.11.0 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 )
diff --git a/go.sum b/go.sum
index 4092e4d..f19e33f 100644
--- a/go.sum
+++ b/go.sum
@@ -6,6 +6,7 @@ github.com/stretchr/testify v1.8.4 h1:CcVxjf3Q8PM0mHUKJCdn+eZZtm5yQwehR5yeSVQQcU
 github.com/stretchr/testify v1.8.4/go.mod h1:sz/lmYIOXD/1dqDmKjjqLyZ2RngseejIcXlSw2iwfAo=
 golang.org/x/text v0.11.0 h1:LAntKIrcmeSKERyiOh0XMV39LXS8IE9UL2yP7+f5ij4=
 golang.org/x/text v0.11.0/go.mod h1:TvPlkZtksWOMsz7fbANvkp4WM8x/WCo/om8BMLbz+aE=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
 gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=