diff --git a/core/admin/Dockerfile b/core/admin/Dockerfile
index f3b8643c..3153bd9e 100644
--- a/core/admin/Dockerfile
+++ b/core/admin/Dockerfile
@@ -1,5 +1,5 @@
 # First stage to build assets
-ARG DISTRO=alpine:3.12
+ARG DISTRO=alpine:3.14
 ARG ARCH=""
 FROM ${ARCH}node:8 as assets
 COPY --from=balenalib/rpi-alpine:3.10 /usr/bin/qemu-arm-static /usr/bin/qemu-arm-static
diff --git a/core/dovecot/Dockerfile b/core/dovecot/Dockerfile
index e1c20eff..22145bde 100644
--- a/core/dovecot/Dockerfile
+++ b/core/dovecot/Dockerfile
@@ -1,4 +1,4 @@
-ARG DISTRO=alpine:3.13
+ARG DISTRO=alpine:3.14
 FROM $DISTRO as builder
 WORKDIR /tmp
 RUN apk add git build-base automake autoconf libtool dovecot-dev xapian-core-dev icu-dev
diff --git a/core/nginx/Dockerfile b/core/nginx/Dockerfile
index 2bc1cfd1..1906ed31 100644
--- a/core/nginx/Dockerfile
+++ b/core/nginx/Dockerfile
@@ -1,4 +1,4 @@
-ARG DISTRO=alpine:3.12
+ARG DISTRO=alpine:3.14
 FROM $DISTRO
 # python3 shared with most images
 RUN apk add --no-cache \
diff --git a/core/none/Dockerfile b/core/none/Dockerfile
index 70041dac..51b8d1c5 100644
--- a/core/none/Dockerfile
+++ b/core/none/Dockerfile
@@ -1,6 +1,6 @@
 # This is an idle image to dynamically replace any component if disabled.
 
-ARG DISTRO=alpine:3.12
+ARG DISTRO=alpine:3.14
 FROM $DISTRO
 
 CMD sleep 1000000d
diff --git a/core/postfix/Dockerfile b/core/postfix/Dockerfile
index af29bf91..939feb9c 100644
--- a/core/postfix/Dockerfile
+++ b/core/postfix/Dockerfile
@@ -1,4 +1,4 @@
-ARG DISTRO=alpine:3.12
+ARG DISTRO=alpine:3.14
 FROM $DISTRO
 # python3 shared with most images
 RUN apk add --no-cache \
diff --git a/core/rspamd/Dockerfile b/core/rspamd/Dockerfile
index acaf074e..6706ef14 100644
--- a/core/rspamd/Dockerfile
+++ b/core/rspamd/Dockerfile
@@ -1,4 +1,4 @@
-ARG DISTRO=alpine:3.12
+ARG DISTRO=alpine:3.14
 FROM $DISTRO
 # python3 shared with most images
 RUN apk add --no-cache \
diff --git a/docs/Dockerfile b/docs/Dockerfile
index 70c9c3c4..11f66b49 100644
--- a/docs/Dockerfile
+++ b/docs/Dockerfile
@@ -1,4 +1,4 @@
-ARG DISTRO=alpine:3.8
+ARG DISTRO=alpine:3.14
 FROM $DISTRO
 
 COPY requirements.txt /requirements.txt
diff --git a/optional/clamav/Dockerfile b/optional/clamav/Dockerfile
index 1132845f..20cebcdc 100644
--- a/optional/clamav/Dockerfile
+++ b/optional/clamav/Dockerfile
@@ -1,4 +1,4 @@
-ARG DISTRO=alpine:3.12
+ARG DISTRO=alpine:3.14
 FROM $DISTRO
 # python3 shared with most images
 RUN apk add --no-cache \
diff --git a/optional/fetchmail/Dockerfile b/optional/fetchmail/Dockerfile
index a707a54a..506e409a 100644
--- a/optional/fetchmail/Dockerfile
+++ b/optional/fetchmail/Dockerfile
@@ -1,4 +1,4 @@
-ARG DISTRO=alpine:3.12
+ARG DISTRO=alpine:3.14
 FROM $DISTRO
 
 # python3 shared with most images
diff --git a/optional/postgresql/Dockerfile b/optional/postgresql/Dockerfile
index ff25a66f..9c6558b9 100644
--- a/optional/postgresql/Dockerfile
+++ b/optional/postgresql/Dockerfile
@@ -1,4 +1,4 @@
-ARG DISTRO=alpine:3.12
+ARG DISTRO=alpine:3.14
 FROM $DISTRO
 # python3 shared with most images
 RUN apk add --no-cache \
diff --git a/optional/radicale/Dockerfile b/optional/radicale/Dockerfile
index 400b1a3f..13761164 100644
--- a/optional/radicale/Dockerfile
+++ b/optional/radicale/Dockerfile
@@ -1,4 +1,4 @@
-ARG DISTRO=alpine:3.12
+ARG DISTRO=alpine:3.14
 FROM $DISTRO
 
 # python3 shared with most images
diff --git a/optional/unbound/Dockerfile b/optional/unbound/Dockerfile
index abb45420..2b472d44 100644
--- a/optional/unbound/Dockerfile
+++ b/optional/unbound/Dockerfile
@@ -1,4 +1,4 @@
-ARG DISTRO=alpine:3.12
+ARG DISTRO=alpine:3.14
 FROM $DISTRO
 # python3 shared with most images
 RUN apk add --no-cache \
diff --git a/setup/Dockerfile b/setup/Dockerfile
index 2b3c3c6c..5775ab6b 100644
--- a/setup/Dockerfile
+++ b/setup/Dockerfile
@@ -1,4 +1,4 @@
-ARG DISTRO=alpine:3.10
+ARG DISTRO=alpine:3.14
 FROM $DISTRO
 
 RUN mkdir -p /app