diff --git a/Dockerfile b/Dockerfile
index 6205cec3..14d8bf5f 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:3.19
+FROM alpine:3.21
 COPY ./ .
 RUN apk add openjdk17
 RUN ./gradlew compileKotlin