diff --git a/Dockerfile.noarch b/Dockerfile.noarch
index 00f55b4..27199b4 100644
--- a/Dockerfile.noarch
+++ b/Dockerfile.noarch
@@ -1,6 +1,6 @@
 # Build a minimal distribution container
 
-FROM alpine:3.4
+FROM alpine:3.8
 
 RUN set -ex \
     && apk add --no-cache ca-certificates apache2-utils
diff --git a/amd64/Dockerfile b/amd64/Dockerfile
index 00f55b4..27199b4 100644
--- a/amd64/Dockerfile
+++ b/amd64/Dockerfile
@@ -1,6 +1,6 @@
 # Build a minimal distribution container
 
-FROM alpine:3.4
+FROM alpine:3.8
 
 RUN set -ex \
     && apk add --no-cache ca-certificates apache2-utils
diff --git a/arm/Dockerfile b/arm/Dockerfile
index 00f55b4..27199b4 100644
--- a/arm/Dockerfile
+++ b/arm/Dockerfile
@@ -1,6 +1,6 @@
 # Build a minimal distribution container
 
-FROM alpine:3.4
+FROM alpine:3.8
 
 RUN set -ex \
     && apk add --no-cache ca-certificates apache2-utils
diff --git a/arm64/Dockerfile b/arm64/Dockerfile
index 00f55b4..27199b4 100644
--- a/arm64/Dockerfile
+++ b/arm64/Dockerfile
@@ -1,6 +1,6 @@
 # Build a minimal distribution container
 
-FROM alpine:3.4
+FROM alpine:3.8
 
 RUN set -ex \
     && apk add --no-cache ca-certificates apache2-utils