diff --git a/Readme.md b/Readme.md
index 7b8a9ba..bb7c0bc 100644
--- a/Readme.md
+++ b/Readme.md
@@ -381,15 +381,19 @@ Queries are applied to a range. The following types of ranges are supported.
 "range":{
    "startPulseId":0,
    "startInclusive":true,
+   "startExpansion":false,
    "endPulseId":100,
-   "endInclusive":true
+   "endInclusive":true,
+   "endExpansion":false
 }
 ```
 
 - **startPulseId**: The start pulse-id of the range request.
 - **startInclusive**: Defines if the start should be considered inclusive (values: **true**|false).
+- **startExpansion**: Expands the query start until the first entry before the defined start (values: true|**false**). Binning aggregations are expanded until the start of the bin of that entry. 
 - **endPulseId**: The end pulse-id of the range request.
 - **endInclusive**: Defines if the end should be considered inclusive (values: **true**|false).
+- **endExpansion**: Expands the query end until the first entry after the defined end (values: true|**false**). Binning aggregations are expanded until the end of the bin of that entry. 
 
 
 #### By Date
@@ -398,15 +402,19 @@ Queries are applied to a range. The following types of ranges are supported.
 "range":{
    "startDate":"2015-08-06T18:00:00.000",
    "startInclusive":true,
+   "startExpansion":false,
    "endDate":"2015-08-06T18:59:59.999",
-   "endInclusive":true
+   "endInclusive":true,
+   "endExpansion":false
 }
 ```
 
 - **startDate**: The start date of the time range in the ISO8601 format (such as 1997-07-16T19:20:30.123+02:00 or 1997-07-16T19:20:30.123456789+02:00 (omitting +02:00 falls back to the server's time zone)).
 - **startInclusive**: Defines if the start should be considered inclusive (values: **true**|false).
+- **startExpansion**: Expands the query start until the first entry before the defined start (values: true|**false**). Binning aggregations are expanded until the start of the bin of that entry. 
 - **endDate**: The end date of the time range.
 - **endInclusive**: Defines if the end should be considered inclusive (values: **true**|false).
+- **endExpansion**: Expands the query end until the first entry after the defined end (values: true|**false**). Binning aggregations are expanded until the end of the bin of that entry. 
 
 
 #### By Time
@@ -415,15 +423,19 @@ Queries are applied to a range. The following types of ranges are supported.
 "range":{
    "startSeconds":"0.0",
    "startInclusive":true,
+   "startExpansion":false,
    "endSeconds":"1.000999999",
-   "endInclusive":true
+   "endInclusive":true,
+   "endExpansion":false
 }
 ```
 
 - **startSeconds**: The start time of the range in seconds since midnight, January 1, 1970 UTC (the UNIX epoch) as a decimal value including fractional seconds.
 - **startInclusive**: Defines if the start should be considered inclusive (values: **true**|false).
+- **startExpansion**: Expands the query start until the first entry before the defined start (values: true|**false**). Binning aggregations are expanded until the start of the bin of that entry. 
 - **endSeconds**: The end time of the range in seconds.
 - **endInclusive**: Defines if the end should be considered inclusive (values: **true**|false).
+- **endExpansion**: Expands the query end until the first entry after the defined end (values: true|**false**). Binning aggregations are expanded until the end of the bin of that entry. 
 
 
 <a name="data_ordering"/>