diff --git a/docs/configuration.md b/docs/configuration.md
index 16a7674..aebd380 100644
--- a/docs/configuration.md
+++ b/docs/configuration.md
@@ -314,6 +314,8 @@ Examples of alerts:
 > The route 1.2.3.4/24 announced by AS1234 is not covered by a ROA  
 > The route 1.2.3.4/24 announced by AS1234 is no longer covered by a ROA  
 
+You need to configure your RPKI data source as described [here](rpki.md).
+
 Parameters for this monitor module:
 
 |Parameter| Description| 
@@ -324,6 +326,35 @@ Parameters for this monitor module:
 |cacheValidPrefixesSeconds| Amount of seconds ROAs get cached in order to identify RPKI repository malfunctions (e.g. disappearing ROAs). Default to 7 days. |
 
 
+#### monitorROAS
+
+This monitor will periodically check and report diffs in ROAs repos involving any of your ASes or prefixes.
+You need to configure your RPKI data source as described [here](rpki.md).
+Note, while BGPalerter will perform the check near real time, many RIRs have delayed ROAs publication times.
+
+
+> Example: 
+> The prefixes list of BGPalerter has the following entries:
+> ```yaml
+> 1.2.3.4/24:
+>    asn: 1234
+>    description: an example
+>    ignoreMorespecifics: false
+> 
+> options:
+>  monitorASns:
+>    2914:
+>      group: default
+> ```
+> If in config.yml monitorROAS is enabled, you will receive alerts every time:
+>  * A ROA that is, or was, involving 1.2.3.4/24 is added/edited/removed.
+>  * A ROA that is, or was, involving AS2914 is added/edited/removed.
+
+
+Example of alerts:
+> ROAs change detected: removed <1.2.3.4/24, 1234, 25, apnic>  
+
+
     
 ### Reports