diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index c3fa4ca..f2f6637 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -15,14 +15,14 @@ stages:
 
 spellcheck:
   stage: orthography
-  image: docker.io/library/node:17.0
+  image: docker.io/library/node:17.3
   before_script:
     - npm i -g markdown-spellcheck
   script:
     - mdspell -r -n -a --en-gb "content/posts/*.md" "content/posts/*.markdown"
 
 build:
-  image: docker.io/cibuilds/hugo:0.88
+  image: docker.io/cibuilds/hugo:0.91
   stage: build
   variables:
     HUGO_ENV: production
diff --git a/_docker/Dockerfile b/_docker/Dockerfile
index 5b3587f..6bfe04e 100644
--- a/_docker/Dockerfile
+++ b/_docker/Dockerfile
@@ -1,4 +1,4 @@
-FROM docker.io/library/nginx:1.21.3-alpine
+FROM docker.io/library/nginx:1.21.4-alpine
 
 COPY ./public/ /usr/share/nginx/html/