diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index cf0c30de..51c7e66d 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -16,6 +16,7 @@ Changelog
 * added axisSoftMin and axisSoftMax options for TimeSeries
 * Added support for Azure Data Explorer datasource plugin (https://github.com/grafana/azure-data-explorer-datasource)
 * Added ``sortBy`` parameter to Table panel
+* Added ``tooltipSort`` parameter to TimeSeries panel
 
 .. _`Bar_Chart`: https://grafana.com/docs/grafana/latest/panels-visualizations/visualizations/bar-chart/
 .. _`RateMetricAgg`: https://www.elastic.co/guide/en/elasticsearch/reference/current/search-aggregations-metrics-rate-aggregation.html
diff --git a/grafanalib/core.py b/grafanalib/core.py
index 4192806b..42d2ee68 100644
--- a/grafanalib/core.py
+++ b/grafanalib/core.py
@@ -2217,6 +2217,8 @@ class TimeSeries(Panel):
     :param thresholds: single stat thresholds
     :param tooltipMode: When you hover your cursor over the visualization, Grafana can display tooltips
         single (Default), multi, none
+    :param tooltipSort: To sort the tooltips
+        none (Default), asc, desc
     :param unit: units
     :param thresholdsStyleMode: thresholds style mode off (Default), area, line, line+area
     :param valueMin: Minimum value for Panel
@@ -2274,6 +2276,7 @@ class TimeSeries(Panel):
     showPoints = attr.ib(default='auto', validator=instance_of(str))
     stacking = attr.ib(factory=dict, validator=instance_of(dict))
     tooltipMode = attr.ib(default='single', validator=instance_of(str))
+    tooltipSort = attr.ib(default='none', validator=instance_of(str))
     unit = attr.ib(default='', validator=instance_of(str))
     thresholdsStyleMode = attr.ib(default='off', validator=instance_of(str))
 
@@ -2334,7 +2337,8 @@ def to_json_data(self):
                         'calcs': self.legendCalcs
                     },
                     'tooltip': {
-                        'mode': self.tooltipMode
+                        'mode': self.tooltipMode,
+                        'sort': self.tooltipSort
                     }
                 },
                 'type': TIMESERIES_TYPE,