diff --git a/actionlint/Dockerfile b/actionlint/Dockerfile
index 0fb31aa..e01484d 100644
--- a/actionlint/Dockerfile
+++ b/actionlint/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:3.18 AS builder
+FROM alpine:3.20 AS builder
 
 RUN apk add --update --no-cache \
   bash \
diff --git a/emacs-mode-release/Dockerfile b/emacs-mode-release/Dockerfile
index 2fef205..79db6d8 100644
--- a/emacs-mode-release/Dockerfile
+++ b/emacs-mode-release/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:3.18
+FROM alpine:3.20
 
 RUN apk add --update --no-cache \
   bash \