diff --git a/webmentions.go b/webmentions.go
index c11e8da..2c4056f 100644
--- a/webmentions.go
+++ b/webmentions.go
@@ -44,7 +44,7 @@ func startWebmentionVerifier() {
 	go func() {
 		for {
 			verifyNextWebmention()
-			time.Sleep(5 * time.Second)
+			time.Sleep(30 * time.Second)
 		}
 	}()
 }