diff --git a/silta-backup/backup/Dockerfile b/silta-backup/backup/Dockerfile
index 36dbaf2e..e0c09b85 100644
--- a/silta-backup/backup/Dockerfile
+++ b/silta-backup/backup/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:3.22.1
+FROM alpine:3.23.3
 
 RUN apk add --no-cache \
     bash tzdata coreutils \