diff --git a/Dockerfile b/Dockerfile
index 5f244a7..aa91e6c 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -8,5 +8,5 @@ COPY . ./
 
 RUN CGO_ENABLED=0 GOOS=linux go build -o certspotter ./cmd/certspotter/
 
-FROM alpine:3.20.3@sha256:1e42bbe2508154c9126d48c2b8a75420c3544343bf86fd041fb7527e017a4b4a
+FROM alpine:3.21.0@sha256:e323a465c03a31ad04374fc7239144d0fd4e2b92da6e3e0655580476d3a84621
 COPY --from=0 /app/certspotter /usr/local/bin/certspotter
\ No newline at end of file