diff --git a/actions/retest/main.go b/actions/retest/main.go
index 26ef0b610d8..b9889536b54 100644
--- a/actions/retest/main.go
+++ b/actions/retest/main.go
@@ -22,6 +22,7 @@ import (
 	"fmt"
 	"log"
 	"os"
+	"slices"
 	"strconv"
 	"strings"
 
@@ -145,7 +146,7 @@ func main() {
 				failedTestFound := false
 				for _, r := range statusList {
 					log.Printf("found context %s with status %s\n", r.GetContext(), r.GetState())
-					if contains([]string{"failed", "failure"}, r.GetState()) {
+					if slices.Contains([]string{"failed", "failure"}, r.GetState()) {
 						log.Printf("found failed test %s\n", r.GetContext())
 						failedTestFound = true
 						// rebase the pr if it is behind the devel branch.
@@ -253,17 +254,6 @@ func (c *retestConfig) checkRetestLimitReached(prNumber int, msg string) (bool,
 	return false, nil
 }
 
-// containers check if slice contains string.
-func contains(s []string, e string) bool {
-	for _, a := range s {
-		if a == e {
-			return true
-		}
-	}
-
-	return false
-}
-
 // filterStatusesList returns list of unique and recently updated github RepoStatuses.
 // Raw github RepoStatus list may contain duplicate and older statuses.
 func filterStatusList(rawStatusList []*github.RepoStatus) []*github.RepoStatus {
diff --git a/e2e/deployment.go b/e2e/deployment.go
index 27a831791e9..1e7de8f7be8 100644
--- a/e2e/deployment.go
+++ b/e2e/deployment.go
@@ -20,6 +20,7 @@ import (
 	"context"
 	"fmt"
 	"os"
+	"slices"
 	"time"
 
 	appsv1 "k8s.io/api/apps/v1"
@@ -349,17 +350,6 @@ func waitForDeploymentUpdate(
 	return nil
 }
 
-// contains check if slice contains string.
-func contains(s []string, e string) bool {
-	for _, a := range s {
-		if a == e {
-			return true
-		}
-	}
-
-	return false
-}
-
 func waitForContainersArgsUpdate(
 	c kubernetes.Interface,
 	ns,
@@ -398,7 +388,7 @@ func waitForContainersArgsUpdate(
 	}
 	cid := deployment.Spec.Template.Spec.Containers // cid: read as containers in deployment
 	for i := range cid {
-		if contains(containers, cid[i].Name) {
+		if slices.Contains(containers, cid[i].Name) {
 			match := false
 			for j, ak := range cid[i].Args {
 				if ak == key {
diff --git a/internal/util/util.go b/internal/util/util.go
index 1dbaf54eaec..76607f9db49 100644
--- a/internal/util/util.go
+++ b/internal/util/util.go
@@ -23,6 +23,7 @@ import (
 	"math"
 	"os"
 	"runtime"
+	"slices"
 	"strings"
 	"time"
 
@@ -363,7 +364,7 @@ func MountOptionsAdd(options string, add ...string) string {
 	}
 
 	for _, opt := range add {
-		if opt != "" && !contains(newOpts, opt) {
+		if opt != "" && !slices.Contains(newOpts, opt) {
 			newOpts = append(newOpts, opt)
 		}
 	}
@@ -371,16 +372,6 @@ func MountOptionsAdd(options string, add ...string) string {
 	return strings.Join(newOpts, ",")
 }
 
-func contains(s []string, key string) bool {
-	for _, v := range s {
-		if v == key {
-			return true
-		}
-	}
-
-	return false
-}
-
 // CallStack returns the stack of the calls in the current goroutine. Useful
 // for debugging or reporting errors. This is a friendly alternative to
 // assert() or panic().