diff --git a/Dockerfile-fat b/Dockerfile-fat
index e96f635a..d34c7daa 100644
--- a/Dockerfile-fat
+++ b/Dockerfile-fat
@@ -12,7 +12,7 @@ RUN DOCKER_ENABLE_SECURITY=true \
 ./gradlew clean build
 
 # Main stage
-FROM alpine:3.21.0
+FROM alpine:3.20.3
 
 # Copy necessary files
 COPY scripts /scripts