diff --git a/Dockerfile b/Dockerfile
index cf3b14f..6aa660c 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -50,7 +50,7 @@ ENV certbot_ref ${certbot_ref}
 ADD "https://codeload.github.com/certbot/certbot/tar.gz/${certbot_ref}" /src/certbot-src.tar.gz
 RUN tar -o -C /src -xf /src/certbot-src.tar.gz
 
-ARG lexicon_ref=v3.17.0
+ARG lexicon_ref=v3.18.0
 ENV lexicon_ref ${lexicon_ref}
 
 ADD "https://codeload.github.com/AnalogJ/lexicon/tar.gz/${lexicon_ref}" /src/lexicon-src.tar.gz
diff --git a/README.md b/README.md
index 25435a0..41e421b 100644
--- a/README.md
+++ b/README.md
@@ -29,5 +29,5 @@ Manifest
 * alpine: 3.20.3
 * certbot: v2.10.0
 * certhub: v1.2.0
-* dns-lexicon: v3.17.0
+* dns-lexicon: v3.18.0
 * git-gau: v1.4.0