diff --git a/.devcontainer/base.Dockerfile b/.devcontainer/base.Dockerfile
index 42546b99..e4bc5c87 100644
--- a/.devcontainer/base.Dockerfile
+++ b/.devcontainer/base.Dockerfile
@@ -1,5 +1,5 @@
 # [Choice] Node.js version (use -bullseye variants on local arm64/Apple Silicon): 18-bullseye, 16-bullseye, 14-bullseye, 18-buster, 16-buster, 14-buster
-ARG VARIANT=18-bullseye@sha256:9b75e4d8786770d693d39123d848eb8961dbf6ce0fee11d4c0018485e1e2343e
+ARG VARIANT=21-bullseye@sha256:6f660100d4956d2c858e10962fd38370065292058f084da9c27830db0bd550e7
 FROM node:${VARIANT}
 
 # [Option] Install zsh