diff --git a/config/manager/deployment.yaml b/config/manager/deployment.yaml
index 62bfa2a2c..fdb324e92 100644
--- a/config/manager/deployment.yaml
+++ b/config/manager/deployment.yaml
@@ -20,6 +20,8 @@ spec:
     spec:
       terminationGracePeriodSeconds: 10
       securityContext:
+        # Required for AWS IAM Role bindings
+        # https://docs.aws.amazon.com/eks/latest/userguide/iam-roles-for-service-accounts-technical-overview.html
         fsGroup: 1337
       containers:
         - name: manager