diff --git a/docker/app/Dockerfile b/docker/app/Dockerfile
index a53d0791..361fc39e 100644
--- a/docker/app/Dockerfile
+++ b/docker/app/Dockerfile
@@ -1,4 +1,4 @@
-FROM elixir:1.12.0-alpine
+FROM elixir:1.12.3-alpine
 
 RUN apk update \
     && apk add inotify-tools build-base git ffmpeg ffmpeg-dev npm nodejs file-dev libpng-dev gifsicle optipng libjpeg-turbo-utils librsvg imagemagick postgresql-client wget rust cargo \
diff --git a/docker/web/Dockerfile b/docker/web/Dockerfile
index 098159c9..2a2cff5e 100644
--- a/docker/web/Dockerfile
+++ b/docker/web/Dockerfile
@@ -1,4 +1,4 @@
-FROM nginx:1.21.1-alpine
+FROM nginx:1.21.3-alpine
 ENV APP_DIR /srv/philomena
 COPY docker/web/nginx.conf /tmp/docker.nginx
 RUN envsubst '$APP_DIR' < /tmp/docker.nginx > /etc/nginx/conf.d/default.conf