diff --git a/Containers/clamav/Dockerfile b/Containers/clamav/Dockerfile
index e5d65b65..e3a42e81 100644
--- a/Containers/clamav/Dockerfile
+++ b/Containers/clamav/Dockerfile
@@ -1,6 +1,6 @@
 # Probably from this file: https://github.com/Cisco-Talos/clamav-docker/blob/main/clamav/0.105/alpine/Dockerfile
 FROM clamav/clamav:0.105.1-7
 
-RUN apk add --update --no-cache tzdata
+RUN apk add --no-cache tzdata
 COPY clamav.conf /tmp/
 RUN cat /tmp/clamav.conf >> /etc/clamav/clamd.conf
diff --git a/Containers/domaincheck/Dockerfile b/Containers/domaincheck/Dockerfile
index 53f89ed6..3c4dae25 100644
--- a/Containers/domaincheck/Dockerfile
+++ b/Containers/domaincheck/Dockerfile
@@ -1,5 +1,5 @@
 FROM alpine:3.17.1
-RUN apk add --update --no-cache lighttpd bash netcat-openbsd
+RUN apk add --no-cache lighttpd bash netcat-openbsd
 
 RUN adduser -S www-data -G www-data
 RUN rm -rf /etc/lighttpd/lighttpd.conf
diff --git a/Containers/postgresql/Dockerfile b/Containers/postgresql/Dockerfile
index 5bd02dd7..27b4e956 100644
--- a/Containers/postgresql/Dockerfile
+++ b/Containers/postgresql/Dockerfile
@@ -1,7 +1,7 @@
 # From https://github.com/docker-library/postgres/blob/master/14/alpine/Dockerfile
 FROM postgres:14.6-alpine
 
-RUN apk add --update --no-cache bash openssl shadow netcat-openbsd grep mawk
+RUN apk add --no-cache bash openssl shadow netcat-openbsd grep mawk
 
 # We need to use the same gid and uid as on old installations
 RUN set -ex; \
diff --git a/Containers/redis/Dockerfile b/Containers/redis/Dockerfile
index 137d928b..98b0f2db 100644
--- a/Containers/redis/Dockerfile
+++ b/Containers/redis/Dockerfile
@@ -1,7 +1,7 @@
 # From https://github.com/docker-library/redis/blob/master/7.0/alpine/Dockerfile
 FROM redis:7.0.7-alpine
 
-RUN apk add --update --no-cache openssl bash
+RUN apk add --no-cache openssl bash
 
 COPY start.sh /usr/bin/
 RUN chmod +x /usr/bin/start.sh
diff --git a/Containers/watchtower/Dockerfile b/Containers/watchtower/Dockerfile
index 4abe572f..945bb333 100644
--- a/Containers/watchtower/Dockerfile
+++ b/Containers/watchtower/Dockerfile
@@ -3,7 +3,7 @@ FROM containrrr/watchtower:1.5.1 as watchtower
 
 FROM alpine:3.17.1
 
-RUN apk add --update --no-cache bash
+RUN apk add --no-cache bash
 COPY --from=watchtower /watchtower /
 
 COPY start.sh /