diff --git a/probot/presolver/app.yml b/probot/presolver/app.yml
index e328512411..648d04f8b7 100644
--- a/probot/presolver/app.yml
+++ b/probot/presolver/app.yml
@@ -35,7 +35,7 @@ default_events:
 # - project_card
 # - project_column
 # - public
-# - pull_request
+- pull_request
 # - pull_request_review
 # - pull_request_review_comment
 # - push
@@ -82,7 +82,7 @@ default_permissions:
 
   # Pull requests and related comments, assignees, labels, milestones, and merges.
   # https://developer.github.com/v3/apps/permissions/#permission-on-pull-requests
-  # pull_requests: read
+  pull_requests: write
 
   # Manage the post-receive hooks for a repository.
   # https://developer.github.com/v3/apps/permissions/#permission-on-repository-hooks