diff --git a/readme.md b/readme.md
index c43cb80..a63d2e1 100644
--- a/readme.md
+++ b/readme.md
@@ -54,6 +54,15 @@ You can now add it as a cron job, and make a daily request.
 ### Beta
 This is still beta. I use it and fixes the bugs when i find them.
 
+### Version supported
+The only version supported right now is semver, with or without a `v` prefix. Fx:
+
+1. `1.2.3` or
+2. `v1.2.3`
+
+Not all github projects is doing tagging like this, so there is some projects that can't be watched right now.
+
+
 ### How to build
 There is no releases yet, but clone the repo, cd to the root and run `cargo build`.
 
@@ -64,4 +73,4 @@ There is no releases yet, but clone the repo, cd to the root and run `cargo buil
 * I am new to rust, so the code i produce is not ferris on wheels, but i will get there eventually. My next round of
   cleanup is going to be on using `Result` correctly and do proper error handling
 
-Happy hacking!
\ No newline at end of file
+Happy hacking!