diff --git a/Dockerfile b/Dockerfile
index 26ca00f..b77f0bc 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:3.18.3 as builder
+FROM alpine:3.18.4 as builder
 
 WORKDIR /go/src/github.com/systemli/etherpad-toolkit