diff --git a/inspector_test.go b/inspector_test.go
index 8b3beb0..0d47d06 100644
--- a/inspector_test.go
+++ b/inspector_test.go
@@ -12,7 +12,6 @@ import (
 	"testing"
 	"time"
 
-	"github.com/redis/go-redis/v9"
 	"github.com/google/go-cmp/cmp"
 	"github.com/google/go-cmp/cmp/cmpopts"
 	"github.com/google/uuid"
@@ -20,6 +19,7 @@ import (
 	"github.com/hibiken/asynq/internal/rdb"
 	h "github.com/hibiken/asynq/internal/testutil"
 	"github.com/hibiken/asynq/internal/timeutil"
+	"github.com/redis/go-redis/v9"
 )
 
 func TestInspectorQueues(t *testing.T) {
@@ -1138,7 +1138,7 @@ func TestInspectorListAggregatingTasks(t *testing.T) {
 		tasks     []*h.TaskSeedData
 		allQueues []string
 		allGroups map[string][]string
-		groups    map[string][]*redis.Z
+		groups    map[string][]redis.Z
 	}{
 		tasks: []*h.TaskSeedData{
 			{Msg: m1, State: base.TaskStateAggregating},
@@ -1152,7 +1152,7 @@ func TestInspectorListAggregatingTasks(t *testing.T) {
 			base.AllGroups("default"): {"group1", "group2"},
 			base.AllGroups("custom"):  {"group1"},
 		},
-		groups: map[string][]*redis.Z{
+		groups: map[string][]redis.Z{
 			base.GroupKey("default", "group1"): {
 				{Member: m1.ID, Score: float64(now.Add(-30 * time.Second).Unix())},
 				{Member: m2.ID, Score: float64(now.Add(-20 * time.Second).Unix())},
@@ -3445,7 +3445,7 @@ func TestInspectorGroups(t *testing.T) {
 	fixtures := struct {
 		tasks     []*h.TaskSeedData
 		allGroups map[string][]string
-		groups    map[string][]*redis.Z
+		groups    map[string][]redis.Z
 	}{
 		tasks: []*h.TaskSeedData{
 			{Msg: m1, State: base.TaskStateAggregating},
@@ -3458,7 +3458,7 @@ func TestInspectorGroups(t *testing.T) {
 			base.AllGroups("default"): {"group1", "group2"},
 			base.AllGroups("custom"):  {"group1"},
 		},
-		groups: map[string][]*redis.Z{
+		groups: map[string][]redis.Z{
 			base.GroupKey("default", "group1"): {
 				{Member: m1.ID, Score: float64(now.Add(-10 * time.Second).Unix())},
 				{Member: m2.ID, Score: float64(now.Add(-20 * time.Second).Unix())},
diff --git a/internal/rdb/inspect_test.go b/internal/rdb/inspect_test.go
index d6823ed..93b488f 100644
--- a/internal/rdb/inspect_test.go
+++ b/internal/rdb/inspect_test.go
@@ -73,11 +73,11 @@ func TestCurrentStats(t *testing.T) {
 		allGroups                       map[string][]string
 		pending                         map[string][]string
 		active                          map[string][]string
-		scheduled                       map[string][]*redis.Z
-		retry                           map[string][]*redis.Z
-		archived                        map[string][]*redis.Z
-		completed                       map[string][]*redis.Z
-		groups                          map[string][]*redis.Z
+		scheduled                       map[string][]redis.Z
+		retry                           map[string][]redis.Z
+		archived                        map[string][]redis.Z
+		completed                       map[string][]redis.Z
+		groups                          map[string][]redis.Z
 		processed                       map[string]int
 		failed                          map[string]int
 		processedTotal                  map[string]int
@@ -111,7 +111,7 @@ func TestCurrentStats(t *testing.T) {
 				base.ActiveKey("critical"): {},
 				base.ActiveKey("low"):      {},
 			},
-			scheduled: map[string][]*redis.Z{
+			scheduled: map[string][]redis.Z{
 				base.ScheduledKey("default"): {
 					{Member: m3.ID, Score: float64(now.Add(time.Hour).Unix())},
 					{Member: m4.ID, Score: float64(now.Unix())},
@@ -119,22 +119,22 @@ func TestCurrentStats(t *testing.T) {
 				base.ScheduledKey("critical"): {},
 				base.ScheduledKey("low"):      {},
 			},
-			retry: map[string][]*redis.Z{
+			retry: map[string][]redis.Z{
 				base.RetryKey("default"):  {},
 				base.RetryKey("critical"): {},
 				base.RetryKey("low"):      {},
 			},
-			archived: map[string][]*redis.Z{
+			archived: map[string][]redis.Z{
 				base.ArchivedKey("default"):  {},
 				base.ArchivedKey("critical"): {},
 				base.ArchivedKey("low"):      {},
 			},
-			completed: map[string][]*redis.Z{
+			completed: map[string][]redis.Z{
 				base.CompletedKey("default"):  {},
 				base.CompletedKey("critical"): {},
 				base.CompletedKey("low"):      {},
 			},
-			groups: map[string][]*redis.Z{
+			groups: map[string][]redis.Z{
 				base.GroupKey("default", "sms:user1"): {
 					{Member: m7.ID, Score: float64(now.Add(-3 * time.Second).Unix())},
 				},
@@ -205,7 +205,7 @@ func TestCurrentStats(t *testing.T) {
 				base.ActiveKey("critical"): {},
 				base.ActiveKey("low"):      {},
 			},
-			scheduled: map[string][]*redis.Z{
+			scheduled: map[string][]redis.Z{
 				base.ScheduledKey("default"): {
 					{Member: m3.ID, Score: float64(now.Add(time.Hour).Unix())},
 					{Member: m4.ID, Score: float64(now.Unix())},
@@ -213,17 +213,17 @@ func TestCurrentStats(t *testing.T) {
 				base.ScheduledKey("critical"): {},
 				base.ScheduledKey("low"):      {},
 			},
-			retry: map[string][]*redis.Z{
+			retry: map[string][]redis.Z{
 				base.RetryKey("default"):  {},
 				base.RetryKey("critical"): {},
 				base.RetryKey("low"):      {},
 			},
-			archived: map[string][]*redis.Z{
+			archived: map[string][]redis.Z{
 				base.ArchivedKey("default"):  {},
 				base.ArchivedKey("critical"): {},
 				base.ArchivedKey("low"):      {},
 			},
-			completed: map[string][]*redis.Z{
+			completed: map[string][]redis.Z{
 				base.CompletedKey("default"):  {},
 				base.CompletedKey("critical"): {},
 				base.CompletedKey("low"):      {},
@@ -435,7 +435,7 @@ func TestGroupStats(t *testing.T) {
 	fixtures := struct {
 		tasks     []*h.TaskSeedData
 		allGroups map[string][]string
-		groups    map[string][]*redis.Z
+		groups    map[string][]redis.Z
 	}{
 		tasks: []*h.TaskSeedData{
 			{Msg: m1, State: base.TaskStateAggregating},
@@ -448,7 +448,7 @@ func TestGroupStats(t *testing.T) {
 			base.AllGroups("default"): {"group1", "group2"},
 			base.AllGroups("custom"):  {"group1"},
 		},
-		groups: map[string][]*redis.Z{
+		groups: map[string][]redis.Z{
 			base.GroupKey("default", "group1"): {
 				{Member: m1.ID, Score: float64(now.Add(-10 * time.Second).Unix())},
 				{Member: m2.ID, Score: float64(now.Add(-20 * time.Second).Unix())},
@@ -1583,7 +1583,7 @@ func TestListAggregating(t *testing.T) {
 		tasks     []*h.TaskSeedData
 		allQueues []string
 		allGroups map[string][]string
-		groups    map[string][]*redis.Z
+		groups    map[string][]redis.Z
 	}{
 		tasks: []*h.TaskSeedData{
 			{Msg: m1, State: base.TaskStateAggregating},
@@ -1596,7 +1596,7 @@ func TestListAggregating(t *testing.T) {
 			base.AllGroups("default"): {"group1", "group2"},
 			base.AllGroups("custom"):  {"group3"},
 		},
-		groups: map[string][]*redis.Z{
+		groups: map[string][]redis.Z{
 			base.GroupKey("default", "group1"): {
 				{Member: m1.ID, Score: float64(now.Add(-30 * time.Second).Unix())},
 				{Member: m2.ID, Score: float64(now.Add(-20 * time.Second).Unix())},
@@ -1663,14 +1663,14 @@ func TestListAggregatingPagination(t *testing.T) {
 		tasks     []*h.TaskSeedData
 		allQueues []string
 		allGroups map[string][]string
-		groups    map[string][]*redis.Z
+		groups    map[string][]redis.Z
 	}{
 		tasks:     []*h.TaskSeedData{}, // will be populated below
 		allQueues: []string{"default"},
 		allGroups: map[string][]string{
 			base.AllGroups("default"): {"mygroup"},
 		},
-		groups: map[string][]*redis.Z{
+		groups: map[string][]redis.Z{
 			groupkey: {}, // will be populated below
 		},
 	}
@@ -1681,7 +1681,7 @@ func TestListAggregatingPagination(t *testing.T) {
 		fxt.tasks = append(fxt.tasks, &h.TaskSeedData{
 			Msg: msg, State: base.TaskStateAggregating,
 		})
-		fxt.groups[groupkey] = append(fxt.groups[groupkey], &redis.Z{
+		fxt.groups[groupkey] = append(fxt.groups[groupkey], redis.Z{
 			Member: msg.ID,
 			Score:  float64(now.Add(-time.Duration(100-i) * time.Second).Unix()),
 		})
@@ -1997,7 +1997,7 @@ func TestRunAggregatingTask(t *testing.T) {
 		tasks     []*h.TaskSeedData
 		allQueues []string
 		allGroups map[string][]string
-		groups    map[string][]*redis.Z
+		groups    map[string][]redis.Z
 	}{
 		tasks: []*h.TaskSeedData{
 			{Msg: m1, State: base.TaskStateAggregating},
@@ -2009,7 +2009,7 @@ func TestRunAggregatingTask(t *testing.T) {
 			base.AllGroups("default"): {"group1"},
 			base.AllGroups("custom"):  {"group1"},
 		},
-		groups: map[string][]*redis.Z{
+		groups: map[string][]redis.Z{
 			base.GroupKey("default", "group1"): {
 				{Member: m1.ID, Score: float64(now.Add(-20 * time.Second).Unix())},
 				{Member: m2.ID, Score: float64(now.Add(-25 * time.Second).Unix())},
@@ -2688,7 +2688,7 @@ func TestRunAllAggregatingTasks(t *testing.T) {
 		tasks     []*h.TaskSeedData
 		allQueues []string
 		allGroups map[string][]string
-		groups    map[string][]*redis.Z
+		groups    map[string][]redis.Z
 	}{
 		tasks: []*h.TaskSeedData{
 			{Msg: m1, State: base.TaskStateAggregating},
@@ -2700,7 +2700,7 @@ func TestRunAllAggregatingTasks(t *testing.T) {
 			base.AllGroups("default"): {"group1"},
 			base.AllGroups("custom"):  {"group2"},
 		},
-		groups: map[string][]*redis.Z{
+		groups: map[string][]redis.Z{
 			base.GroupKey("default", "group1"): {
 				{Member: m1.ID, Score: float64(now.Add(-20 * time.Second).Unix())},
 				{Member: m2.ID, Score: float64(now.Add(-25 * time.Second).Unix())},
@@ -2998,7 +2998,7 @@ func TestArchiveAggregatingTask(t *testing.T) {
 		tasks     []*h.TaskSeedData
 		allQueues []string
 		allGroups map[string][]string
-		groups    map[string][]*redis.Z
+		groups    map[string][]redis.Z
 	}{
 		tasks: []*h.TaskSeedData{
 			{Msg: m1, State: base.TaskStateAggregating},
@@ -3010,7 +3010,7 @@ func TestArchiveAggregatingTask(t *testing.T) {
 			base.AllGroups("default"): {"group1"},
 			base.AllGroups("custom"):  {"group1"},
 		},
-		groups: map[string][]*redis.Z{
+		groups: map[string][]redis.Z{
 			base.GroupKey("default", "group1"): {
 				{Member: m1.ID, Score: float64(now.Add(-20 * time.Second).Unix())},
 				{Member: m2.ID, Score: float64(now.Add(-25 * time.Second).Unix())},
@@ -3483,7 +3483,7 @@ func TestArchiveAllAggregatingTasks(t *testing.T) {
 		tasks     []*h.TaskSeedData
 		allQueues []string
 		allGroups map[string][]string
-		groups    map[string][]*redis.Z
+		groups    map[string][]redis.Z
 	}{
 		tasks: []*h.TaskSeedData{
 			{Msg: m1, State: base.TaskStateAggregating},
@@ -3495,7 +3495,7 @@ func TestArchiveAllAggregatingTasks(t *testing.T) {
 			base.AllGroups("default"): {"group1"},
 			base.AllGroups("custom"):  {"group2"},
 		},
-		groups: map[string][]*redis.Z{
+		groups: map[string][]redis.Z{
 			base.GroupKey("default", "group1"): {
 				{Member: m1.ID, Score: float64(now.Add(-20 * time.Second).Unix())},
 				{Member: m2.ID, Score: float64(now.Add(-25 * time.Second).Unix())},
@@ -4122,7 +4122,7 @@ func TestDeleteAggregatingTask(t *testing.T) {
 		tasks     []*h.TaskSeedData
 		allQueues []string
 		allGroups map[string][]string
-		groups    map[string][]*redis.Z
+		groups    map[string][]redis.Z
 	}{
 		tasks: []*h.TaskSeedData{
 			{Msg: m1, State: base.TaskStateAggregating},
@@ -4134,7 +4134,7 @@ func TestDeleteAggregatingTask(t *testing.T) {
 			base.AllGroups("default"): {"group1"},
 			base.AllGroups("custom"):  {"group1"},
 		},
-		groups: map[string][]*redis.Z{
+		groups: map[string][]redis.Z{
 			base.GroupKey("default", "group1"): {
 				{Member: m1.ID, Score: float64(now.Add(-20 * time.Second).Unix())},
 				{Member: m2.ID, Score: float64(now.Add(-25 * time.Second).Unix())},
@@ -4756,7 +4756,7 @@ func TestDeleteAllAggregatingTasks(t *testing.T) {
 		tasks     []*h.TaskSeedData
 		allQueues []string
 		allGroups map[string][]string
-		groups    map[string][]*redis.Z
+		groups    map[string][]redis.Z
 	}{
 		tasks: []*h.TaskSeedData{
 			{Msg: m1, State: base.TaskStateAggregating},
@@ -4768,7 +4768,7 @@ func TestDeleteAllAggregatingTasks(t *testing.T) {
 			base.AllGroups("default"): {"group1"},
 			base.AllGroups("custom"):  {"group1"},
 		},
-		groups: map[string][]*redis.Z{
+		groups: map[string][]redis.Z{
 			base.GroupKey("default", "group1"): {
 				{Member: m1.ID, Score: float64(now.Add(-20 * time.Second).Unix())},
 				{Member: m2.ID, Score: float64(now.Add(-25 * time.Second).Unix())},
diff --git a/internal/rdb/rdb_test.go b/internal/rdb/rdb_test.go
index e3ca3c8..3bd9eda 100644
--- a/internal/rdb/rdb_test.go
+++ b/internal/rdb/rdb_test.go
@@ -3119,7 +3119,7 @@ func TestAggregationCheck(t *testing.T) {
 		desc string
 		// initial data
 		tasks     []*h.TaskSeedData
-		groups    map[string][]*redis.Z
+		groups    map[string][]redis.Z
 		allGroups map[string][]string
 
 		// args
@@ -3138,7 +3138,7 @@ func TestAggregationCheck(t *testing.T) {
 		{
 			desc:  "with an empty group",
 			tasks: []*h.TaskSeedData{},
-			groups: map[string][]*redis.Z{
+			groups: map[string][]redis.Z{
 				base.GroupKey("default", "mygroup"): {},
 			},
 			allGroups: map[string][]string{
@@ -3165,7 +3165,7 @@ func TestAggregationCheck(t *testing.T) {
 				{Msg: msg4, State: base.TaskStateAggregating},
 				{Msg: msg5, State: base.TaskStateAggregating},
 			},
-			groups: map[string][]*redis.Z{
+			groups: map[string][]redis.Z{
 				base.GroupKey("default", "mygroup"): {
 					{Member: msg1.ID, Score: float64(now.Add(-5 * time.Minute).Unix())},
 					{Member: msg2.ID, Score: float64(now.Add(-3 * time.Minute).Unix())},
@@ -3198,7 +3198,7 @@ func TestAggregationCheck(t *testing.T) {
 				{Msg: msg4, State: base.TaskStateAggregating},
 				{Msg: msg5, State: base.TaskStateAggregating},
 			},
-			groups: map[string][]*redis.Z{
+			groups: map[string][]redis.Z{
 				base.GroupKey("default", "mygroup"): {
 					{Member: msg1.ID, Score: float64(now.Add(-5 * time.Minute).Unix())},
 					{Member: msg2.ID, Score: float64(now.Add(-3 * time.Minute).Unix())},
@@ -3232,7 +3232,7 @@ func TestAggregationCheck(t *testing.T) {
 				{Msg: msg2, State: base.TaskStateAggregating},
 				{Msg: msg3, State: base.TaskStateAggregating},
 			},
-			groups: map[string][]*redis.Z{
+			groups: map[string][]redis.Z{
 				base.GroupKey("default", "mygroup"): {
 					{Member: msg1.ID, Score: float64(now.Add(-5 * time.Minute).Unix())},
 					{Member: msg2.ID, Score: float64(now.Add(-3 * time.Minute).Unix())},
@@ -3263,7 +3263,7 @@ func TestAggregationCheck(t *testing.T) {
 				{Msg: msg4, State: base.TaskStateAggregating},
 				{Msg: msg5, State: base.TaskStateAggregating},
 			},
-			groups: map[string][]*redis.Z{
+			groups: map[string][]redis.Z{
 				base.GroupKey("default", "mygroup"): {
 					{Member: msg1.ID, Score: float64(now.Add(-15 * time.Minute).Unix())},
 					{Member: msg2.ID, Score: float64(now.Add(-3 * time.Minute).Unix())},
@@ -3296,7 +3296,7 @@ func TestAggregationCheck(t *testing.T) {
 				{Msg: msg4, State: base.TaskStateAggregating},
 				{Msg: msg5, State: base.TaskStateAggregating},
 			},
-			groups: map[string][]*redis.Z{
+			groups: map[string][]redis.Z{
 				base.GroupKey("default", "mygroup"): {
 					{Member: msg1.ID, Score: float64(now.Add(-15 * time.Minute).Unix())},
 					{Member: msg2.ID, Score: float64(now.Add(-3 * time.Minute).Unix())},
@@ -3335,7 +3335,7 @@ func TestAggregationCheck(t *testing.T) {
 				{Msg: msg4, State: base.TaskStateAggregating},
 				{Msg: msg5, State: base.TaskStateAggregating},
 			},
-			groups: map[string][]*redis.Z{
+			groups: map[string][]redis.Z{
 				base.GroupKey("default", "mygroup"): {
 					{Member: msg1.ID, Score: float64(now.Add(-15 * time.Minute).Unix())},
 					{Member: msg2.ID, Score: float64(now.Add(-3 * time.Minute).Unix())},
@@ -3368,7 +3368,7 @@ func TestAggregationCheck(t *testing.T) {
 				{Msg: msg4, State: base.TaskStateAggregating},
 				{Msg: msg5, State: base.TaskStateAggregating},
 			},
-			groups: map[string][]*redis.Z{
+			groups: map[string][]redis.Z{
 				base.GroupKey("default", "mygroup"): {
 					{Member: msg1.ID, Score: float64(now.Add(-15 * time.Minute).Unix())},
 					{Member: msg2.ID, Score: float64(now.Add(-3 * time.Minute).Unix())},
@@ -3470,8 +3470,8 @@ func TestDeleteAggregationSet(t *testing.T) {
 		desc string
 		// initial data
 		tasks              []*h.TaskSeedData
-		aggregationSets    map[string][]*redis.Z
-		allAggregationSets map[string][]*redis.Z
+		aggregationSets    map[string][]redis.Z
+		allAggregationSets map[string][]redis.Z
 
 		// args
 		ctx   context.Context
@@ -3491,14 +3491,14 @@ func TestDeleteAggregationSet(t *testing.T) {
 				{Msg: m2, State: base.TaskStateAggregating},
 				{Msg: m3, State: base.TaskStateAggregating},
 			},
-			aggregationSets: map[string][]*redis.Z{
+			aggregationSets: map[string][]redis.Z{
 				base.AggregationSetKey("default", "mygroup", setID): {
 					{Member: m1.ID, Score: float64(now.Add(-5 * time.Minute).Unix())},
 					{Member: m2.ID, Score: float64(now.Add(-4 * time.Minute).Unix())},
 					{Member: m3.ID, Score: float64(now.Add(-3 * time.Minute).Unix())},
 				},
 			},
-			allAggregationSets: map[string][]*redis.Z{
+			allAggregationSets: map[string][]redis.Z{
 				base.AllAggregationSets("default"): {
 					{Member: base.AggregationSetKey("default", "mygroup", setID), Score: float64(now.Add(aggregationTimeout).Unix())},
 				},
@@ -3525,7 +3525,7 @@ func TestDeleteAggregationSet(t *testing.T) {
 				{Msg: m2, State: base.TaskStateAggregating},
 				{Msg: m3, State: base.TaskStateAggregating},
 			},
-			aggregationSets: map[string][]*redis.Z{
+			aggregationSets: map[string][]redis.Z{
 				base.AggregationSetKey("default", "mygroup", setID): {
 					{Member: m1.ID, Score: float64(now.Add(-5 * time.Minute).Unix())},
 				},
@@ -3534,7 +3534,7 @@ func TestDeleteAggregationSet(t *testing.T) {
 					{Member: m3.ID, Score: float64(now.Add(-3 * time.Minute).Unix())},
 				},
 			},
-			allAggregationSets: map[string][]*redis.Z{
+			allAggregationSets: map[string][]redis.Z{
 				base.AllAggregationSets("default"): {
 					{Member: base.AggregationSetKey("default", "mygroup", setID), Score: float64(now.Add(aggregationTimeout).Unix())},
 					{Member: base.AggregationSetKey("default", "mygroup", otherSetID), Score: float64(now.Add(aggregationTimeout).Unix())},
@@ -3599,8 +3599,8 @@ func TestDeleteAggregationSetError(t *testing.T) {
 		desc string
 		// initial data
 		tasks              []*h.TaskSeedData
-		aggregationSets    map[string][]*redis.Z
-		allAggregationSets map[string][]*redis.Z
+		aggregationSets    map[string][]redis.Z
+		allAggregationSets map[string][]redis.Z
 
 		// args
 		ctx   context.Context
@@ -3619,14 +3619,14 @@ func TestDeleteAggregationSetError(t *testing.T) {
 				{Msg: m2, State: base.TaskStateAggregating},
 				{Msg: m3, State: base.TaskStateAggregating},
 			},
-			aggregationSets: map[string][]*redis.Z{
+			aggregationSets: map[string][]redis.Z{
 				base.AggregationSetKey("default", "mygroup", setID): {
 					{Member: m1.ID, Score: float64(now.Add(-5 * time.Minute).Unix())},
 					{Member: m2.ID, Score: float64(now.Add(-4 * time.Minute).Unix())},
 					{Member: m3.ID, Score: float64(now.Add(-3 * time.Minute).Unix())},
 				},
 			},
-			allAggregationSets: map[string][]*redis.Z{
+			allAggregationSets: map[string][]redis.Z{
 				base.AllAggregationSets("default"): {
 					{Member: base.AggregationSetKey("default", "mygroup", setID), Score: float64(now.Add(aggregationTimeout).Unix())},
 				},
@@ -3685,23 +3685,23 @@ func TestReclaimStaleAggregationSets(t *testing.T) {
 	// Note: In this test, we're trying out a new way to test RDB by exactly describing how
 	// keys and values are represented in Redis.
 	tests := []struct {
-		groups                 map[string][]*redis.Z // map redis-key to redis-zset
-		aggregationSets        map[string][]*redis.Z
-		allAggregationSets     map[string][]*redis.Z
+		groups                 map[string][]redis.Z // map redis-key to redis-zset
+		aggregationSets        map[string][]redis.Z
+		allAggregationSets     map[string][]redis.Z
 		qname                  string
 		wantGroups             map[string][]redis.Z
 		wantAggregationSets    map[string][]redis.Z
 		wantAllAggregationSets map[string][]redis.Z
 	}{
 		{
-			groups: map[string][]*redis.Z{
+			groups: map[string][]redis.Z{
 				base.GroupKey("default", "foo"): {},
 				base.GroupKey("default", "bar"): {},
 				base.GroupKey("default", "qux"): {
 					{Member: m4.ID, Score: float64(now.Add(-10 * time.Second).Unix())},
 				},
 			},
-			aggregationSets: map[string][]*redis.Z{
+			aggregationSets: map[string][]redis.Z{
 				base.AggregationSetKey("default", "foo", "set1"): {
 					{Member: m1.ID, Score: float64(now.Add(-3 * time.Minute).Unix())},
 					{Member: m2.ID, Score: float64(now.Add(-4 * time.Minute).Unix())},
@@ -3710,7 +3710,7 @@ func TestReclaimStaleAggregationSets(t *testing.T) {
 					{Member: m3.ID, Score: float64(now.Add(-1 * time.Minute).Unix())},
 				},
 			},
-			allAggregationSets: map[string][]*redis.Z{
+			allAggregationSets: map[string][]redis.Z{
 				base.AllAggregationSets("default"): {
 					{Member: base.AggregationSetKey("default", "foo", "set1"), Score: float64(now.Add(-10 * time.Second).Unix())}, // set1 is expired
 					{Member: base.AggregationSetKey("default", "bar", "set2"), Score: float64(now.Add(40 * time.Second).Unix())},  // set2 is not expired
diff --git a/internal/testutil/testutil.go b/internal/testutil/testutil.go
index cff762b..e7d2cbb 100644
--- a/internal/testutil/testutil.go
+++ b/internal/testutil/testutil.go
@@ -13,12 +13,12 @@ import (
 	"testing"
 	"time"
 
-	"github.com/redis/go-redis/v9"
 	"github.com/google/go-cmp/cmp"
 	"github.com/google/go-cmp/cmp/cmpopts"
 	"github.com/google/uuid"
 	"github.com/hibiken/asynq/internal/base"
 	"github.com/hibiken/asynq/internal/timeutil"
+	"github.com/redis/go-redis/v9"
 )
 
 // EquateInt64Approx returns a Comparer option that treats int64 values
@@ -377,7 +377,7 @@ func seedRedisZSet(tb testing.TB, c redis.UniversalClient, key string,
 	for _, item := range items {
 		msg := item.Message
 		encoded := MustMarshal(tb, msg)
-		z := &redis.Z{Member: msg.ID, Score: float64(item.Score)}
+		z := redis.Z{Member: msg.ID, Score: float64(item.Score)}
 		if err := c.ZAdd(context.Background(), key, z).Err(); err != nil {
 			tb.Fatal(err)
 		}
@@ -570,7 +570,7 @@ func SeedTasks(tb testing.TB, r redis.UniversalClient, taskData []*TaskSeedData)
 	}
 }
 
-func SeedRedisZSets(tb testing.TB, r redis.UniversalClient, zsets map[string][]*redis.Z) {
+func SeedRedisZSets(tb testing.TB, r redis.UniversalClient, zsets map[string][]redis.Z) {
 	for key, zs := range zsets {
 		// FIXME: How come we can't simply do ZAdd(ctx, key, zs...) here?
 		for _, z := range zs {
diff --git a/x/rate/semaphore_test.go b/x/rate/semaphore_test.go
index 13b7b4f..d0ddc83 100644
--- a/x/rate/semaphore_test.go
+++ b/x/rate/semaphore_test.go
@@ -8,11 +8,11 @@ import (
 	"testing"
 	"time"
 
-	"github.com/redis/go-redis/v9"
 	"github.com/google/uuid"
 	"github.com/hibiken/asynq"
 	"github.com/hibiken/asynq/internal/base"
 	asynqcontext "github.com/hibiken/asynq/internal/context"
+	"github.com/redis/go-redis/v9"
 )
 
 var (
@@ -211,7 +211,7 @@ func TestNewSemaphore_Acquire_StaleToken(t *testing.T) {
 
 	// adding a set member to mimic the case where token is acquired but the goroutine crashed,
 	// in which case, the token will not be explicitly removed and should be present already
-	rc.ZAdd(context.Background(), semaphoreKey("stale-token"), &redis.Z{
+	rc.ZAdd(context.Background(), semaphoreKey("stale-token"), redis.Z{
 		Score:  float64(time.Now().Add(-10 * time.Second).Unix()),
 		Member: taskID,
 	})
@@ -277,9 +277,9 @@ func TestNewSemaphore_Release(t *testing.T) {
 				t.Errorf("%s;\nredis.UniversalClient.Del() got error %v", tt.desc, err)
 			}
 
-			var members []*redis.Z
+			var members []redis.Z
 			for i := 0; i < len(tt.taskIDs); i++ {
-				members = append(members, &redis.Z{
+				members = append(members, redis.Z{
 					Score:  float64(time.Now().Add(time.Duration(i) * time.Second).Unix()),
 					Member: tt.taskIDs[i],
 				})
@@ -356,9 +356,9 @@ func TestNewSemaphore_Release_Error(t *testing.T) {
 				t.Errorf("%s;\nredis.UniversalClient.Del() got error %v", tt.desc, err)
 			}
 
-			var members []*redis.Z
+			var members []redis.Z
 			for i := 0; i < len(tt.taskIDs); i++ {
-				members = append(members, &redis.Z{
+				members = append(members, redis.Z{
 					Score:  float64(time.Now().Add(time.Duration(i) * time.Second).Unix()),
 					Member: tt.taskIDs[i],
 				})