diff --git a/doc/ci/yaml/README.md b/doc/ci/yaml/README.md
index 54b06f10b95..697445bceea 100644
--- a/doc/ci/yaml/README.md
+++ b/doc/ci/yaml/README.md
@@ -125,6 +125,9 @@ builds, including deploy builds. This can be an array or a multi-line string.
 
 ### after_script
 
+>**Note:**
+Introduced in GitLab 8.7 and GitLab Runner v1.2.
+
 `after_script` is used to define the command that will be run after for all
 builds. This has to be an array or a multi-line string.