diff --git a/.github/pull_request_template.md b/.github/pull_request_template.md
index 1b246c9a..15f9de14 100644
--- a/.github/pull_request_template.md
+++ b/.github/pull_request_template.md
@@ -3,6 +3,7 @@
 VCGLib is fully owned by CNR, and all the VCGLib contributors that do not work at the VCLab of CNR must first sign the contributor license agreement that you can find at the following link: https://github.com/cnr-isti-vclab/vcglib/blob/devel/docs/ContributorLicenseAgreement.pdf
 
 If you will sign the CLA, then we will be able to merge your pull request after reviewing it.
+The validity of the CLA is two years, therefore after signing it your PRs for the next two years can be merged without further actions.
 Please send the signed document to muntoni.alessandro@gmail.com and paolo.cignoni@isti.cnr.it .
 If you will not sign the CLA, we will review and then apply your changes as soon as possible.