diff --git a/README.markdown b/README.markdown
index 5c34728..7f697c0 100644
--- a/README.markdown
+++ b/README.markdown
@@ -12,6 +12,22 @@ Example:
     cloud7-openstack-rocky-release/|7/cloud/x86_64/openstack-rocky/|7/cloud/x86_64/openstack-rocky/|7/cloud/x86_64/openstack-rocky/
     cloud7-openstack-rocky-release/|7/cloud/ppc64le/openstack-rocky/|7/cloud/ppc64le/openstack-rocky/|7/cloud/ppc64le/openstack-rocky/
 
+## Running the lint tool
+
+Included in the root of this repository is a lint tool to check the files for
+common errors. Please run this tool before submitting a pull-request. This tool
+requires python2
+
+### Check a single file
+```
+$ ./cclint sign_list
+```
+
+### Check all files
+```
+$ ./cclint
+```
+
 [sync-legend-wiki]: https://wiki.centos.org/SIGGuide/Content/Mirror "Steps to request space on the mirror network"
 
 ## Buildlogs synchronization