diff --git a/Dockerfile b/Dockerfile
index e247ec9..bcc5db1 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:3.13.1 AS builder
+FROM golang:1.16-alpine AS builder
 RUN apk add -U --no-cache \
   build-base \
   ca-certificates \
@@ -14,7 +14,7 @@ RUN go mod download
 COPY . .
 RUN GOOS=linux go build -o gonic cmd/gonic/gonic.go
 
-FROM alpine:3.13.1
+FROM alpine:3.13.5
 LABEL org.opencontainers.image.source https://github.com/sentriz/gonic
 RUN apk add -U --no-cache \
   ffmpeg \
diff --git a/Dockerfile.debug b/Dockerfile.debug
index d5f31be..827ed76 100644
--- a/Dockerfile.debug
+++ b/Dockerfile.debug
@@ -1,5 +1,3 @@
-# syntax=docker/dockerfile:experimental
-
 FROM golang:1.16-alpine AS builder
 RUN apk add -U --no-cache \
     build-base \
diff --git a/Dockerfile.dev b/Dockerfile.dev
index 5bcb460..4a64e1c 100644
--- a/Dockerfile.dev
+++ b/Dockerfile.dev
@@ -14,7 +14,7 @@ RUN --mount=type=cache,target=/go/pkg/mod \
   --mount=type=cache,target=/root/.cache/go-build \
   GOOS=linux go build -o gonic cmd/gonic/gonic.go
 
-FROM alpine:3.12.3
+FROM alpine:3.13.5
 RUN apk add -U --no-cache \
   ffmpeg \
   ca-certificates