diff --git a/Dockerfile b/Dockerfile
index 1e277ae..40e1345 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -44,7 +44,7 @@ RUN apk add --no-cache make musl-dev git go
 
 RUN mkdir /src /dist
 
-ARG lego_ref=v4.16.1
+ARG lego_ref=v4.18.0
 ENV lego_ref ${lego_ref}
 
 ENV GOPATH /go
diff --git a/README.md b/README.md
index 3668e1d..2bfe217 100644
--- a/README.md
+++ b/README.md
@@ -29,4 +29,4 @@ Manifest
 * alpine: 3.20.3
 * certhub: v1.2.0
 * git-gau: v1.4.0
-* lego: v4.16.1
+* lego: v4.18.0