diff --git a/Dockerfile b/Dockerfile
index 7b3a9ef..97e9951 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM docker.io/asciidoctor/docker-asciidoctor:1.54.0
+FROM docker.io/asciidoctor/docker-asciidoctor:1.55.0
 
 COPY theme /theme
 COPY fonts /theme/fonts