diff --git a/Dockerfile b/Dockerfile
index e191bbe..0784f68 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -13,7 +13,7 @@ FROM vaultwarden/server:1.30.5-alpine as vaultwarden
 #
 # Supercronic
 #
-FROM alpine:3.19 as supercronic
+FROM alpine:3.21 as supercronic
 
 ARG SUPERCRONIC_VERSION
 ARG OVERMIND_VERSION
@@ -29,7 +29,7 @@ RUN wget "$SUPERCRONIC_URL" && chmod +x "$SUPERCRONIC"
 #
 # Overmind
 #
-FROM alpine:3.19 as overmind
+FROM alpine:3.21 as overmind
 
 ARG OVERMIND_VERSION
 ARG SUPERCRONIC