diff --git a/cmd/controller/Dockerfile b/cmd/controller/Dockerfile
index 64b00354df..7fd72b6075 100644
--- a/cmd/controller/Dockerfile
+++ b/cmd/controller/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:3.7
+FROM alpine:3.8.1
 
 RUN apk --update add ca-certificates && \
     adduser -D agones
diff --git a/cmd/sdk-server/Dockerfile b/cmd/sdk-server/Dockerfile
index 8a2b79b77c..75e4af348a 100644
--- a/cmd/sdk-server/Dockerfile
+++ b/cmd/sdk-server/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:3.7
+FROM alpine:3.8.1
 
 RUN apk --update add ca-certificates && \
     adduser -D agones
diff --git a/examples/simple-udp/Dockerfile b/examples/simple-udp/Dockerfile
index fe69050e20..64aaa655c0 100644
--- a/examples/simple-udp/Dockerfile
+++ b/examples/simple-udp/Dockerfile
@@ -21,7 +21,7 @@ COPY . /go/src/agones.dev/agones
 RUN CGO_ENABLED=0 GOOS=linux go build -a -installsuffix cgo -o server .
 
 # final image
-FROM alpine:3.7
+FROM alpine:3.8.1
 
 RUN adduser -D server
 COPY --from=builder /go/src/simple-udp/server /home/server/server