diff --git a/content/oci/oci.go b/content/oci/oci.go
index 4c25af80..748aeecc 100644
--- a/content/oci/oci.go
+++ b/content/oci/oci.go
@@ -334,7 +334,7 @@ func (s *Store) Tags(ctx context.Context, last string, fn func(tags []string) er
 	s.sync.RLock()
 	defer s.sync.RUnlock()
 
-	return listTags(ctx, s.tagResolver, last, fn)
+	return listTags(s.tagResolver, last, fn)
 }
 
 // ensureOCILayoutFile ensures the `oci-layout` file.
diff --git a/content/oci/readonlyoci.go b/content/oci/readonlyoci.go
index 2f390bb3..3f1ee4ee 100644
--- a/content/oci/readonlyoci.go
+++ b/content/oci/readonlyoci.go
@@ -22,7 +22,7 @@ import (
 	"fmt"
 	"io"
 	"io/fs"
-	"sort"
+	"slices"
 
 	"github.com/opencontainers/go-digest"
 	ocispec "github.com/opencontainers/image-spec/specs-go/v1"
@@ -125,7 +125,7 @@ func (s *ReadOnlyStore) Predecessors(ctx context.Context, node ocispec.Descripto
 //
 // See also `Tags()` in the package `registry`.
 func (s *ReadOnlyStore) Tags(ctx context.Context, last string, fn func(tags []string) error) error {
-	return listTags(ctx, s.tagResolver, last, fn)
+	return listTags(s.tagResolver, last, fn)
 }
 
 // validateOCILayoutFile validates the `oci-layout` file.
@@ -216,7 +216,7 @@ func resolveBlob(fsys fs.FS, dgst string) (ocispec.Descriptor, error) {
 // list.
 //
 // See also `Tags()` in the package `registry`.
-func listTags(ctx context.Context, tagResolver *resolver.Memory, last string, fn func(tags []string) error) error {
+func listTags(tagResolver *resolver.Memory, last string, fn func(tags []string) error) error {
 	var tags []string
 
 	tagMap := tagResolver.Map()
@@ -229,7 +229,7 @@ func listTags(ctx context.Context, tagResolver *resolver.Memory, last string, fn
 		}
 		tags = append(tags, tag)
 	}
-	sort.Strings(tags)
+	slices.Sort(tags)
 
 	return fn(tags)
 }
diff --git a/registry/remote/auth/scope.go b/registry/remote/auth/scope.go
index adf79791..d81cc0d4 100644
--- a/registry/remote/auth/scope.go
+++ b/registry/remote/auth/scope.go
@@ -18,7 +18,6 @@ package auth
 import (
 	"context"
 	"slices"
-	"sort"
 	"strings"
 
 	"oras.land/oras-go/v2/registry"
@@ -276,14 +275,14 @@ func CleanScopes(scopes []string) []string {
 				}
 				actions = append(actions, action)
 			}
-			sort.Strings(actions)
+			slices.Sort(actions)
 			scope := resourceType + ":" + resourceName + ":" + strings.Join(actions, ",")
 			result = append(result, scope)
 		}
 	}
 
 	// sort and return
-	sort.Strings(result)
+	slices.Sort(result)
 	return result
 }
 
@@ -302,7 +301,7 @@ func cleanActions(actions []string) []string {
 	}
 
 	// slow path
-	sort.Strings(actions)
+	slices.Sort(actions)
 	n := 0
 	for i := 0; i < len(actions); i++ {
 		if actions[i] == "*" {