diff --git a/internal/prepare.go b/internal/prepare.go
index 3b2621b..a0f8191 100644
--- a/internal/prepare.go
+++ b/internal/prepare.go
@@ -4,15 +4,15 @@ import (
 	"bytes"
 	"fmt"
 	"io"
-	"io/ioutil"
 	"math/rand"
 	"os"
 	"path/filepath"
 	"regexp"
-	"sigs.k8s.io/yaml"
 	"strings"
 	"time"
 
+	"sigs.k8s.io/yaml"
+
 	"github.com/crossplane/crossplane-runtime/pkg/errors"
 	"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
 	kyaml "k8s.io/apimachinery/pkg/util/yaml"
@@ -23,8 +23,8 @@ import (
 var (
 	charset = []rune("abcdefghijklmnopqrstuvwxyz0123456789")
 
-	dataSourceRegex = regexp.MustCompile("\\${data\\.(.*?)}")
-	randomStrRegex  = regexp.MustCompile("\\${Rand\\.(.*?)}")
+	dataSourceRegex = regexp.MustCompile(`\${data\.(.*?)}`)
+	randomStrRegex  = regexp.MustCompile(`\${Rand\.(.*?)}`)
 
 	caseDirectory = "case"
 )
@@ -105,7 +105,7 @@ func (p *Preparer) PrepareManifests() ([]config.Manifest, error) {
 func (p *Preparer) injectVariables() (map[string]string, error) {
 	dataSourceMap := make(map[string]string)
 	if p.dataSourcePath != "" {
-		dataSource, err := ioutil.ReadFile(p.dataSourcePath)
+		dataSource, err := os.ReadFile(p.dataSourcePath)
 		if err != nil {
 			return nil, errors.Wrap(err, "cannot read data source file")
 		}
@@ -116,7 +116,7 @@ func (p *Preparer) injectVariables() (map[string]string, error) {
 
 	inputs := make(map[string]string, len(p.testFilePaths))
 	for _, f := range p.testFilePaths {
-		manifestData, err := ioutil.ReadFile(f)
+		manifestData, err := os.ReadFile(f)
 		if err != nil {
 			return nil, errors.Wrapf(err, "cannot read %s", f)
 		}
diff --git a/internal/templates/embed.go b/internal/templates/embed.go
index e3fb558..8f7c994 100644
--- a/internal/templates/embed.go
+++ b/internal/templates/embed.go
@@ -3,17 +3,21 @@ package templates
 import _ "embed" // nolint:golint
 
 // inputFileTemplate is the template for the input file.
+//
 //go:embed 00-apply.yaml.tmpl
 var inputFileTemplate string
 
 // assertFileTemplate is the template for the assert file.
+//
 //go:embed 00-assert.yaml.tmpl
 var assertFileTemplate string
 
 // deleteFileTemplate is the template for the delete file.
+//
 //go:embed 01-delete.yaml.tmpl
 var deleteFileTemplate string
 
 // assertDeletedFileTemplate is the template for delete assert file.
+//
 //go:embed 01-assert.yaml.tmpl
 var assertDeletedFileTemplate string