diff --git a/server/Dockerfile b/server/Dockerfile
index 00252fd7..919fac61 100644
--- a/server/Dockerfile
+++ b/server/Dockerfile
@@ -1,6 +1,6 @@
 # Production image.
 # Has to be run with the parent folder as context for the builder to access frontend files.
-FROM node:24.17 AS build
+FROM node:26.4 AS build
 
 # Build backend.
 WORKDIR /usr/src/app
@@ -20,7 +20,7 @@ RUN --mount=type=secret,id=mui_x_license \
   VITE_MUI_X_LICENSE=$(cat /run/secrets/mui_x_license) npm run build
 
 # Final build stage to pick only actually needed files into the image.
-FROM node:24.17-alpine
+FROM node:26.4-alpine
 
 USER node
 
diff --git a/server/Dockerfile.dev b/server/Dockerfile.dev
index 9f556bb8..cba08547 100644
--- a/server/Dockerfile.dev
+++ b/server/Dockerfile.dev
@@ -1,5 +1,5 @@
 # Backend image for development and test environments, complete with all the tooling, etc.
-FROM node:24.17 AS dev
+FROM node:26.4 AS dev
 
 # Install dependencies.
 WORKDIR /usr/src/app
@@ -12,7 +12,7 @@ COPY . .
 CMD ["npx", "nest", "start", "--watch", "--preserveWatchOutput"]
 
 # This stage is for reducing image size in CI which makes artifact upload faster.
-FROM node:24.17-alpine
+FROM node:26.4-alpine
 
 WORKDIR /usr/src/app
 COPY --from=dev /usr/src/app .