diff --git a/scanner/Dockerfile b/scanner/Dockerfile
index 0b08e43..5b144fa 100644
--- a/scanner/Dockerfile
+++ b/scanner/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:3.17.2 as scanner_builder
+FROM alpine:3.21.0 as scanner_builder
 
 RUN apk add --no-cache \
       curl \
diff --git a/sleeper/Dockerfile b/sleeper/Dockerfile
index 41bcdaf..8c4e092 100644
--- a/sleeper/Dockerfile
+++ b/sleeper/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:3.17.2 as sleeper_builder
+FROM alpine:3.21.0 as sleeper_builder
 
 ARG VERSION