diff --git a/app/vminsert/opentsdbhttp/parser.go b/app/vminsert/opentsdbhttp/parser.go
index c1cb32c43..bb6c04916 100644
--- a/app/vminsert/opentsdbhttp/parser.go
+++ b/app/vminsert/opentsdbhttp/parser.go
@@ -65,7 +65,7 @@ func (r *Row) unmarshal(o *fastjson.Value, tagsPool []Tag) ([]Tag, error) {
 
 	rawTs := o.Get("timestamp")
 	if rawTs != nil {
-		ts, err := rawTs.Int64()
+		ts, err := getFloat64(rawTs)
 		if err != nil {
 			return tagsPool, fmt.Errorf("invalid `timestamp` in %s: %s", o, err)
 		}
@@ -80,7 +80,7 @@ func (r *Row) unmarshal(o *fastjson.Value, tagsPool []Tag) ([]Tag, error) {
 	if rawV == nil {
 		return tagsPool, fmt.Errorf("missing `value` in %s", o)
 	}
-	v, err := getValue(rawV)
+	v, err := getFloat64(rawV)
 	if err != nil {
 		return tagsPool, fmt.Errorf("invalid `value` in %s: %s", o, err)
 	}
@@ -106,7 +106,7 @@ func (r *Row) unmarshal(o *fastjson.Value, tagsPool []Tag) ([]Tag, error) {
 	return tagsPool, nil
 }
 
-func getValue(v *fastjson.Value) (float64, error) {
+func getFloat64(v *fastjson.Value) (float64, error) {
 	switch v.Type() {
 	case fastjson.TypeNumber:
 		return v.Float64()
diff --git a/app/vminsert/opentsdbhttp/parser_test.go b/app/vminsert/opentsdbhttp/parser_test.go
index 58375d9ba..366d481fa 100644
--- a/app/vminsert/opentsdbhttp/parser_test.go
+++ b/app/vminsert/opentsdbhttp/parser_test.go
@@ -54,8 +54,8 @@ func TestRowsUnmarshalFailure(t *testing.T) {
 
 	// Invalid timestamp type
 	f(`{"metric": "aaa", "timestamp": "foobar", "value": 0.45, "tags": {"foo": "bar"}}`)
-	f(`{"metric": "aaa", "timestamp": 123.456, "value": 0.45, "tags": {"foo": "bar"}}`)
-	f(`{"metric": "aaa", "timestamp": "123", "value": 0.45, "tags": {"foo": "bar"}}`)
+	f(`{"metric": "aaa", "timestamp": [1,2], "value": 0.45, "tags": {"foo": "bar"}}`)
+	f(`{"metric": "aaa", "timestamp": {"a":1}, "value": 0.45, "tags": {"foo": "bar"}}`)
 
 	// Invalid value type
 	f(`{"metric": "aaa", "timestamp": 1122, "value": [0,1], "tags": {"foo":"bar"}}`)
@@ -120,6 +120,30 @@ func TestRowsUnmarshalSuccess(t *testing.T) {
 			}},
 		}},
 	})
+	// Timestamp as string
+	f(`{"metric": "foobar", "timestamp": "1789", "value": -123.456, "tags": {"a":"b"}}`, &Rows{
+		Rows: []Row{{
+			Metric:    "foobar",
+			Value:     -123.456,
+			Timestamp: 1789,
+			Tags: []Tag{{
+				Key:   "a",
+				Value: "b",
+			}},
+		}},
+	})
+	// Timestamp as float64 (it is truncated to integer)
+	f(`{"metric": "foobar", "timestamp": 17.89, "value": -123.456, "tags": {"a":"b"}}`, &Rows{
+		Rows: []Row{{
+			Metric:    "foobar",
+			Value:     -123.456,
+			Timestamp: 17,
+			Tags: []Tag{{
+				Key:   "a",
+				Value: "b",
+			}},
+		}},
+	})
 	// Empty tags
 	f(`{"metric": "foobar", "timestamp": 789, "value": -123.456, "tags": {}}`, &Rows{
 		Rows: []Row{{