diff --git a/386/Dockerfile b/386/Dockerfile
index 3e65949..f380ed4 100644
--- a/386/Dockerfile
+++ b/386/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:edge
+FROM alpine:3.13.2
 
 # Whenever possible, install tools using the distro package manager
 RUN apk add --no-cache tini ttyd socat nginx unzip openssl openssh ca-certificates  && \
diff --git a/amd64/Dockerfile b/amd64/Dockerfile
index 5c57942..bb8a51a 100644
--- a/amd64/Dockerfile
+++ b/amd64/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:edge
+FROM alpine:3.13.2
 
 # Whenever possible, install tools using the distro package manager
 RUN apk add --no-cache tini ttyd socat nginx unzip openssl openssh ca-certificates  && \
diff --git a/arm64/Dockerfile b/arm64/Dockerfile
index a513f24..fc0d012 100644
--- a/arm64/Dockerfile
+++ b/arm64/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:edge
+FROM alpine:3.13.2
 
 # Whenever possible, install tools using the distro package manager
 RUN apk add --no-cache tini ttyd socat nginx unzip openssl openssh ca-certificates  && \
diff --git a/armv7/Dockerfile b/armv7/Dockerfile
index 9afa13e..fe3d0fb 100644
--- a/armv7/Dockerfile
+++ b/armv7/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:edge
+FROM alpine:3.13.2
 
 # Whenever possible, install tools using the distro package manager
 RUN apk add --no-cache tini ttyd socat nginx unzip openssl openssh ca-certificates  && \