diff --git a/.node-version b/.node-version
index 123b052798..1fc51668f8 100644
--- a/.node-version
+++ b/.node-version
@@ -1 +1 @@
-18.20.2
+18.20.6
diff --git a/Dockerfile b/Dockerfile
index 55cc379a4b..8c14129ed5 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM node:18.20.2-bullseye AS builder
+FROM node:18.20.6-bullseye AS builder
 
 ARG NODE_ENV=production
 
@@ -13,7 +13,7 @@ RUN yarn install
 RUN yarn build
 RUN rm -rf .git
 
-FROM node:18.20.2-bullseye-slim AS runner
+FROM node:18.20.6-bullseye-slim AS runner
 
 WORKDIR /misskey
 
diff --git a/packages/backend/package.json b/packages/backend/package.json
index 18de109108..41bd60f82d 100644
--- a/packages/backend/package.json
+++ b/packages/backend/package.json
@@ -145,7 +145,7 @@
 		"@types/koa__multer": "2.0.4",
 		"@types/koa__router": "8.0.11",
 		"@types/mocha": "9.1.1",
-		"@types/node": "18.19.31",
+		"@types/node": "18.19.73",
 		"@types/node-fetch": "3.0.3",
 		"@types/nodemailer": "6.4.5",
 		"@types/oauth": "0.9.1",
diff --git a/packages/backend/yarn.lock b/packages/backend/yarn.lock
index 636d474c39..188f3b45a2 100644
--- a/packages/backend/yarn.lock
+++ b/packages/backend/yarn.lock
@@ -858,10 +858,10 @@
   resolved "https://registry.yarnpkg.com/@types/node/-/node-16.6.2.tgz#331b7b9f8621c638284787c5559423822fdffc50"
   integrity sha512-LSw8TZt12ZudbpHc6EkIyDM3nHVWKYrAvGy6EAJfNfjusbwnThqjqxUKKRwuV3iWYeW/LYMzNgaq3MaLffQ2xA==
 
-"@types/node@18.19.31":
-  version "18.19.31"
-  resolved "https://registry.yarnpkg.com/@types/node/-/node-18.19.31.tgz#b7d4a00f7cb826b60a543cebdbda5d189aaecdcd"
-  integrity sha512-ArgCD39YpyyrtFKIqMDvjz79jto5fcI/SVUs2HwB+f0dAzq68yqOdyaSivLiLugSziTpNXLQrVb7RZFmdZzbhA==
+"@types/node@18.19.73":
+  version "18.19.73"
+  resolved "https://registry.yarnpkg.com/@types/node/-/node-18.19.73.tgz#70de39cf25004c18fe781e49ea730967a21fbb95"
+  integrity sha512-O451pmK1nYLktpIxucFTJ6EMjiYR5uoa+JkKwA1pempbXdel/Jin5tvhOzVCS5a7/jUmKZmPVBHpl+LLqfYwew==
   dependencies:
     undici-types "~5.26.4"