diff --git a/app/requirements.txt b/app/requirements.txt
index 02c85eb..c9867e8 100644
--- a/app/requirements.txt
+++ b/app/requirements.txt
@@ -1,4 +1,4 @@
-checkdmarc==5.0.2
+checkdmarc==5.1.0
 dacite==1.8.1
 dkimpy==1.1.5
 email-validator==2.1.0.post1