diff --git a/ci/ci/github.py b/ci/ci/github.py
index 146939cd875..3fedc623d8e 100644
--- a/ci/ci/github.py
+++ b/ci/ci/github.py
@@ -228,6 +228,8 @@ def update_from_gh_json(self, gh_json):
         assert self.number == gh_json['number']
         self.title = gh_json['title']
         self.author = gh_json['user']['login']
+        self.assignees = {user['login'] for user in gh_json['assignees']}
+        self.reviewers = {user['login'] for user in gh_json['requested_reviewers']}
 
         new_labels = {label['name'] for label in gh_json['labels']}
         if new_labels != self.labels: