diff --git a/README.Rmd b/README.Rmd
index 0c52172..26d2fc8 100644
--- a/README.Rmd
+++ b/README.Rmd
@@ -99,4 +99,4 @@ ggplot(data_plot, aes(time, value, color = type, size = type)) +
 ## Contact
 
  - For any suggestions and comments write me an email at: [tsreprpackage@gmail.com](mailto:tsreprpackage@gmail.com).
- - For contribution options, check CONTRIBUTING.md file, please.
+ - For contribution options, check [CONTRIBUTING.md](https://github.com/PetoLau/TSrepr/blob/master/CONTRIBUTING.md) file, please.
diff --git a/README.md b/README.md
index 78e6e79..0cf1b3f 100644
--- a/README.md
+++ b/README.md
@@ -92,4 +92,4 @@ Contact
 -------
 
 -   For any suggestions and comments write me an email at: <tsreprpackage@gmail.com>.
--   For contribution options, check CONTRIBUTING.md file, please.
+-   For contribution options, check [CONTRIBUTING.md](https://github.com/PetoLau/TSrepr/blob/master/CONTRIBUTING.md) file, please.