diff --git a/Containers/apache/Dockerfile b/Containers/apache/Dockerfile
index 8b6ce492..fc8a391f 100644
--- a/Containers/apache/Dockerfile
+++ b/Containers/apache/Dockerfile
@@ -1,6 +1,6 @@
 FROM caddy:2.6.4-alpine as caddy
 
-FROM httpd:2.4.57-alpine3.17
+FROM httpd:2.4.57-alpine3.18
 
 COPY --from=caddy /usr/bin/caddy /usr/bin/caddy
 
diff --git a/Containers/borgbackup/Dockerfile b/Containers/borgbackup/Dockerfile
index cf48f52c..8e3a65a0 100644
--- a/Containers/borgbackup/Dockerfile
+++ b/Containers/borgbackup/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:3.17.3
+FROM alpine:3.18.2
 
 RUN set -ex; \
     \
diff --git a/Containers/domaincheck/Dockerfile b/Containers/domaincheck/Dockerfile
index fc7264ef..4c4e33e8 100644
--- a/Containers/domaincheck/Dockerfile
+++ b/Containers/domaincheck/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:3.17.3
+FROM alpine:3.18.2
 RUN set -ex; \
     apk add --no-cache bash lighttpd netcat-openbsd; \
     adduser -S www-data -G www-data; \
diff --git a/Containers/imaginary/Dockerfile b/Containers/imaginary/Dockerfile
index 514de406..b88adcaf 100644
--- a/Containers/imaginary/Dockerfile
+++ b/Containers/imaginary/Dockerfile
@@ -1,6 +1,6 @@
-FROM golang:1.20.5-alpine3.17 as go
+FROM golang:1.20.5-alpine3.18 as go
 
-ENV IMAGINARY_HASH b632dae8cc321452c3f85bcae79c580b1ae1ed84
+ENV IMAGINARY_HASH b632dae8cc321452c3f85bcae79c580b1ae1ed84
 
 RUN set -ex; \
     apk add --no-cache \
@@ -12,7 +12,7 @@ RUN set -ex; \
         build-base; \
     go install github.com/h2non/imaginary@"$IMAGINARY_HASH";
 
-FROM alpine:3.17.3
+FROM alpine:3.18.2
 RUN set -ex; \
     apk add --no-cache \
         tzdata \
diff --git a/Containers/mastercontainer/Dockerfile b/Containers/mastercontainer/Dockerfile
index e844f340..280b641f 100644
--- a/Containers/mastercontainer/Dockerfile
+++ b/Containers/mastercontainer/Dockerfile
@@ -5,7 +5,7 @@ FROM docker:24.0.2-cli as docker
 FROM caddy:2.6.4-alpine as caddy
 
 # From https://github.com/docker-library/php/blob/master/8.2/alpine3.17/fpm/Dockerfile
-FROM php:8.2.7-fpm-alpine3.17
+FROM php:8.2.7-fpm-alpine3.18
 
 EXPOSE 80
 EXPOSE 8080
diff --git a/Containers/nextcloud/Dockerfile b/Containers/nextcloud/Dockerfile
index 059c0931..49f05cba 100644
--- a/Containers/nextcloud/Dockerfile
+++ b/Containers/nextcloud/Dockerfile
@@ -1,4 +1,4 @@
-FROM php:8.1.20-fpm-alpine3.17
+FROM php:8.1.20-fpm-alpine3.18
 
 ENV PHP_MEMORY_LIMIT 512M
 ENV PHP_UPLOAD_LIMIT 10G
diff --git a/Containers/talk/Dockerfile b/Containers/talk/Dockerfile
index 1d5f3899..ca50732f 100644
--- a/Containers/talk/Dockerfile
+++ b/Containers/talk/Dockerfile
@@ -1,6 +1,6 @@
 FROM nats:2.9.17-scratch as nats
 FROM strukturag/nextcloud-spreed-signaling:1.1.2 as signaling
-FROM coturn/coturn:4.6.2-r0-alpine
+FROM coturn/coturn:4.6.2-r3-alpine
 USER root
 
 COPY --from=nats /nats-server /usr/local/bin/nats-server
@@ -14,26 +14,28 @@ RUN set -ex; \
         ca-certificates \
         tzdata \
         bash \
+        janus-gateway \
         openssl \
         supervisor \
         bind-tools \
         netcat-openbsd \
+        wget \
         shadow \
         util-linux \
         build-base \
-        lua5.3-dev \
-        luarocks5.3; \
-    apk add --no-cache janus-gateway --repository http://dl-cdn.alpinelinux.org/alpine/edge/community; \
+        lua5.4-dev \
+        luarocks5.4; \
     useradd --system talk; \
-    luarocks-5.3 install luajson; \
-    luarocks-5.3 install ansicolors; \
+    luarocks-5.4 install luajson; \
+    luarocks-5.4 install ansicolors; \
     rename -v ".jcfg.sample" ".jcfg" /etc/janus/*.sample; \
     apk del --no-cache \
+        wget \
         shadow \
         util-linux \
         build-base \
-        lua5.3-dev \
-        luarocks5.3; \
+        lua5.4-dev \
+        luarocks5.4; \
     \
 # Give root a random password
     echo "root:$(openssl rand -base64 12)" | chpasswd; \
diff --git a/Containers/watchtower/Dockerfile b/Containers/watchtower/Dockerfile
index ec8f30ad..113d8bfc 100644
--- a/Containers/watchtower/Dockerfile
+++ b/Containers/watchtower/Dockerfile
@@ -1,7 +1,7 @@
 # From https://github.com/containrrr/watchtower/blob/main/dockerfiles/Dockerfile.self-contained
 FROM containrrr/watchtower:1.5.3 as watchtower
 
-FROM alpine:3.17.3
+FROM alpine:3.18.2
 
 RUN apk add --no-cache bash
 COPY --from=watchtower /watchtower /watchtower