diff --git a/internal/proto/scan.go b/internal/proto/scan.go
index 7d7183c..596ec44 100644
--- a/internal/proto/scan.go
+++ b/internal/proto/scan.go
@@ -105,6 +105,13 @@ func Scan(b []byte, v interface{}) error {
 		var err error
 		*v, err = time.Parse(time.RFC3339Nano, util.BytesToString(b))
 		return err
+	case *time.Duration:
+		n, err := util.ParseInt(b, 10, 64)
+		if err != nil {
+			return err
+		}
+		*v = time.Duration(n)
+		return nil
 	case encoding.BinaryUnmarshaler:
 		return v.UnmarshalBinary(b)
 	default:
diff --git a/internal/proto/writer.go b/internal/proto/writer.go
index 81b09b8..c426098 100644
--- a/internal/proto/writer.go
+++ b/internal/proto/writer.go
@@ -98,6 +98,8 @@ func (w *Writer) WriteArg(v interface{}) error {
 	case time.Time:
 		w.numBuf = v.AppendFormat(w.numBuf[:0], time.RFC3339Nano)
 		return w.bytes(w.numBuf)
+	case time.Duration:
+		return w.int(v.Nanoseconds())
 	case encoding.BinaryMarshaler:
 		b, err := v.MarshalBinary()
 		if err != nil {
diff --git a/redis_test.go b/redis_test.go
index 05c6d79..095da2d 100644
--- a/redis_test.go
+++ b/redis_test.go
@@ -300,6 +300,18 @@ var _ = Describe("Client", func() {
 		Expect(tm2).To(BeTemporally("==", tm))
 	})
 
+	It("should set and scan durations", func() {
+		duration := 10 * time.Minute
+		err := client.Set(ctx, "duration", duration, 0).Err()
+		Expect(err).NotTo(HaveOccurred())
+
+		var duration2 time.Duration
+		err = client.Get(ctx, "duration").Scan(&duration2)
+		Expect(err).NotTo(HaveOccurred())
+
+		Expect(duration2).To(Equal(duration))
+	})
+
 	It("should Conn", func() {
 		err := client.Conn(ctx).Get(ctx, "this-key-does-not-exist").Err()
 		Expect(err).To(Equal(redis.Nil))