diff --git a/docker/radiusd/Dockerfile b/docker/radiusd/Dockerfile
index 29a4e2a..7752c87 100644
--- a/docker/radiusd/Dockerfile
+++ b/docker/radiusd/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:3
+FROM alpine:3.14
 
 ARG TZ
 ARG RADIUS_HOST
@@ -8,8 +8,8 @@ ARG NO_PREPARE
 ENV SCRIPTDIR=/scripts TZ=${TZ} RADIUS_HOST=${RADIUS_HOST} \
     NO_PREPARE=${NO_PREPARE}
 
-RUN apk upgrade --update && \
-    apk add --no-cache ${APKREPO_EDGE} freeradius freeradius-eap \
+RUN apk add --no-cache ${APKREPO_EDGE} freeradius \
+                                       freeradius-eap \
                                        freeradius-utils && \
     apk add --no-cache openssl make ca-certificates \
                        tzdata patch wpa_supplicant