diff --git a/openconnect/Dockerfile b/openconnect/Dockerfile
index cc66e22..8d6d27b 100644
--- a/openconnect/Dockerfile
+++ b/openconnect/Dockerfile
@@ -2,11 +2,14 @@
 # Dockerfile for openconnect
 #
 
-FROM alpine:edge
-MAINTAINER kev <noreply@easypi.pro>
+FROM alpine:3.12
+MAINTAINER EasyPi Software Foundation
 
 RUN set -xe \
-    && apk add --no-cache openconnect \
+    && apk add --no-cache nettle \
+    && apk add --no-cache \
+               --repository http://dl-cdn.alpinelinux.org/alpine/edge/community/ \
+               openconnect \
     && mkdir -p /etc/openconnect \
     && touch /etc/openconnect/openconnect.conf
 
diff --git a/openconnect/arm/Dockerfile b/openconnect/arm/Dockerfile
index b32d0b4..6d34201 100644
--- a/openconnect/arm/Dockerfile
+++ b/openconnect/arm/Dockerfile
@@ -2,11 +2,14 @@
 # Dockerfile for openconnect-arm
 #
 
-FROM arm32v7/alpine:edge
+FROM arm32v7/alpine:3.12
 MAINTAINER EasyPi Software Foundation
 
 RUN set -xe \
-    && apk add --no-cache openconnect \
+    && apk add --no-cache nettle \
+    && apk add --no-cache \
+               --repository http://dl-cdn.alpinelinux.org/alpine/edge/community/ \
+               openconnect \
     && mkdir -p /etc/openconnect \
     && touch /etc/openconnect/openconnect.conf