diff --git a/Dockerfile b/Dockerfile
index 4626f18..d28f245 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM docker.io/library/node:21.4.0-bullseye
+FROM docker.io/library/node:21.5.0-bullseye
 COPY action.bash package.json /action/
 WORKDIR /action/
 RUN npm install