diff --git a/Dockerfile b/Dockerfile
index c2de36f..9527b73 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM ocaml/opam:alpine-3.21-ocaml-5.3
+FROM ocaml/opam:alpine-3.21-ocaml-5.4
 
 USER root
 RUN apk --update add m4