diff --git a/requirements.txt b/requirements.txt
index 2e9cde0..bc8843f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,3 +1,3 @@
-acme==1.23.0
+acme==1.27.0
 certbot==1.27.0
 dns-lexicon==3.11.5