diff --git a/Dockerfile b/Dockerfile
index c87c662..7886303 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:3.17
+FROM alpine:3.18
 
 ENV SHELLCHECK_VERSION=0.8.0
 ENV SHELLCHECK_VERSION_TAG v$SHELLCHECK_VERSION