diff --git a/ingestion/internal/capture/ports.go b/ingestion/internal/capture/ports.go
index 58a7d52..b2c312e 100644
--- a/ingestion/internal/capture/ports.go
+++ b/ingestion/internal/capture/ports.go
@@ -63,7 +63,9 @@ type IssueRef struct {
 // scopes to owner "mathias"; the port deliberately omits owner.
 type IssueTracker interface {
 	CreateIssue(ctx context.Context, repo, title, body string) (IssueRef, error)
-	CloseIssue(ctx context.Context, repo string, number int) (IssueRef, error)
+	// CloseIssue closes an issue, optionally posting a closing comment
+	// first (empty comment ⇒ close only).
+	CloseIssue(ctx context.Context, repo string, number int, comment string) (IssueRef, error)
 	CommentIssue(ctx context.Context, repo string, number int, body string) (IssueRef, error)
 }
 
diff --git a/ingestion/internal/capture/service.go b/ingestion/internal/capture/service.go
index 132e537..af893ce 100644
--- a/ingestion/internal/capture/service.go
+++ b/ingestion/internal/capture/service.go
@@ -222,7 +222,7 @@ func (s *Service) persistTicket(ctx context.Context, tk Ticket) (TicketResult, e
 	case "create":
 		ref, err = s.issues.CreateIssue(ctx, tk.Repo, tk.Title, tk.Body)
 	case "close":
-		ref, err = s.issues.CloseIssue(ctx, tk.Repo, tk.Number)
+		ref, err = s.issues.CloseIssue(ctx, tk.Repo, tk.Number, tk.Body)
 	case "comment":
 		ref, err = s.issues.CommentIssue(ctx, tk.Repo, tk.Number, tk.Body)
 	}
diff --git a/ingestion/internal/capture/service_test.go b/ingestion/internal/capture/service_test.go
index c1608c5..b57df0a 100644
--- a/ingestion/internal/capture/service_test.go
+++ b/ingestion/internal/capture/service_test.go
@@ -69,7 +69,7 @@ func (f *fakeTracker) CreateIssue(_ context.Context, repo, title, _ string) (Iss
 	return IssueRef{Repo: repo, Number: 100 + len(f.created), URL: "https://git/" + repo + "/issues/x"}, nil
 }
 
-func (f *fakeTracker) CloseIssue(_ context.Context, repo string, number int) (IssueRef, error) {
+func (f *fakeTracker) CloseIssue(_ context.Context, repo string, number int, _ string) (IssueRef, error) {
 	if f.err != nil {
 		return IssueRef{}, f.err
 	}