diff --git a/Dockerfile b/Dockerfile
index d810a18..2ee9569 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -3,7 +3,7 @@ WORKDIR /go/src/github.com/stuart-warren/yamlfmt/
 COPY . .
 RUN CGO_ENABLED=0 GOOS=linux go build -a -o yamlfmt ./cmd/yamlfmt
 
-FROM alpine:3.16  
+FROM alpine:3.21.0  
 RUN apk --no-cache add diffutils
 WORKDIR /tmp
 COPY --from=0 /go/src/github.com/stuart-warren/yamlfmt/yamlfmt /usr/local/bin/yamlfmt