diff --git a/Dockerfile b/Dockerfile
index 7473733..aed0325 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:3.20.3
+FROM alpine:3.21.0
 RUN apk add --no-cache coreutils gcc libc-dev make python3
 WORKDIR /opt/test-runner
 COPY . .