diff --git a/Assets/XCharts/CHANGELOG.md b/Assets/XCharts/CHANGELOG.md
index 19dfe713..592b247d 100644
--- a/Assets/XCharts/CHANGELOG.md
+++ b/Assets/XCharts/CHANGELOG.md
@@ -1,6 +1,7 @@
 
 # 更新日志
 
+* (2019.12.16) 修复`Overlay`模式下不显示`Tooltip`的问题
 * (2019.12.15) 增加`Title`的`TextStyle`支持
 * (2019.12.11) 修复`Legend`都隐藏时`Value轴`还显示数值的问题
 * (2019.12.11) 修复`Series->Data->Size`重置为0后设置无效的问题
diff --git a/Assets/XCharts/Runtime/Internal/BaseChart.cs b/Assets/XCharts/Runtime/Internal/BaseChart.cs
index 2e474ee1..0534b14d 100644
--- a/Assets/XCharts/Runtime/Internal/BaseChart.cs
+++ b/Assets/XCharts/Runtime/Internal/BaseChart.cs
@@ -459,8 +459,9 @@ namespace XCharts
             {
                 if (canvas == null) return;
                 Vector2 local;
+                var cam = canvas.renderMode == RenderMode.ScreenSpaceOverlay ? null : canvas.worldCamera;
                 if (!RectTransformUtility.ScreenPointToLocalPointInRectangle(rectTransform,
-                    Input.mousePosition, canvas.worldCamera, out local))
+                    Input.mousePosition, cam, out local))
                 {
                     pointerPos = Vector2.zero;
                 }
diff --git a/Assets/XCharts/Runtime/Utility/XChartsMgr.cs b/Assets/XCharts/Runtime/Utility/XChartsMgr.cs
index d6ebd8dd..bcd79d6f 100644
--- a/Assets/XCharts/Runtime/Utility/XChartsMgr.cs
+++ b/Assets/XCharts/Runtime/Utility/XChartsMgr.cs
@@ -25,7 +25,7 @@ namespace XCharts
     public class XChartsMgr : MonoBehaviour
     {
         public const string version = "1.0.5";
-        public const int date = 20191215;
+        public const int date = 20191216;
 
         [SerializeField] private string m_NowVersion;
         [SerializeField] private string m_NewVersion;
diff --git a/Assets/XCharts/version.json b/Assets/XCharts/version.json
index 896d94cd..657288ab 100644
--- a/Assets/XCharts/version.json
+++ b/Assets/XCharts/version.json
@@ -1,7 +1,7 @@
 {
     "version": "1.0.5",
-    "date": "20191215",
-    "checkdate": "20191215",
-    "desc": "欢迎 Github 上点 Star 支持，非常感谢！",
+    "date": "20191216",
+    "checkdate": "20191216",
+    "desc": "如果 XCharts 对您有帮助，希望您能在 Github 上点 Star 支持，非常感谢！",
     "homepage": "https://github.com/monitor1394/unity-ugui-XCharts"
 }
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