diff --git a/sample-functions/AlpineFunction/Dockerfile b/sample-functions/AlpineFunction/Dockerfile
index 776a46f6..7946672d 100644
--- a/sample-functions/AlpineFunction/Dockerfile
+++ b/sample-functions/AlpineFunction/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:3.7
+FROM alpine:3.8
 
 RUN apk --no-cache add curl \
     && curl -sL https://github.com/openfaas/faas/releases/download/0.9.4/fwatchdog > /usr/bin/fwatchdog \
diff --git a/sample-functions/AlpineFunction/Dockerfile.armhf b/sample-functions/AlpineFunction/Dockerfile.armhf
index aa62e104..a36d4bd6 100644
--- a/sample-functions/AlpineFunction/Dockerfile.armhf
+++ b/sample-functions/AlpineFunction/Dockerfile.armhf
@@ -1,4 +1,4 @@
-FROM alpine:3.7
+FROM alpine:3.8
 
 RUN apk --no-cache add curl \
     && curl -sL https://github.com/openfaas/faas/releases/download/0.9.4/fwatchdog-armhf > /usr/bin/fwatchdog \