diff --git a/Dockerfile b/Dockerfile
index 98d1d24..211cd89 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,6 +1,6 @@
 FROM ghcr.io/sigstore/cosign/cosign:latest@sha256:33a6a55d2f1354bc989b791974cf4ee00a900ab9e4e54b393962321758eee3c6 as cosign
 
-FROM node:18.5.0-alpine@sha256:e479d86de1ef8403adda6800733a7f8d18df4f3c1c2e68ba3e2bc05fdea9de20
+FROM node:18.6.0-alpine@sha256:b90b63a402958508763900643576333fbf560033191d4426da14b14f91e8d3b0
 COPY --from=cosign /ko-app/cosign /usr/local/bin/cosign
 WORKDIR /app