diff --git a/curl/Dockerfile b/curl/Dockerfile
index 7b190b91..f3b1b2f7 100644
--- a/curl/Dockerfile
+++ b/curl/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:3.6
+FROM alpine:3.24
 
 RUN apk --no-cache add curl ca-certificates jq && \
     update-ca-certificates
diff --git a/docker-cleanup/Dockerfile b/docker-cleanup/Dockerfile
index 884d6c45..fa21232e 100644
--- a/docker-cleanup/Dockerfile
+++ b/docker-cleanup/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:3.5
+FROM alpine:3.24
 
 # Generic docker-cleanup tool
 # Currently runs docker-gc & removes dangling volumes
diff --git a/docker-gc-cron/Dockerfile b/docker-gc-cron/Dockerfile
index c6a0b288..8d1f5469 100755
--- a/docker-gc-cron/Dockerfile
+++ b/docker-gc-cron/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:3.5
+FROM alpine:3.24
 
 # Fork of https://github.com/clockworksoul/docker-gc-cron
 
diff --git a/flow/Dockerfile b/flow/Dockerfile
index 539e3310..fb7f1cfe 100644
--- a/flow/Dockerfile
+++ b/flow/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:3.6
+FROM alpine:3.24
 
 ENV FLOW_VERSION=0.57.3
 
diff --git a/gitlab-pipeline-checker/Dockerfile b/gitlab-pipeline-checker/Dockerfile
index b3e8f56e..bdfe9b11 100644
--- a/gitlab-pipeline-checker/Dockerfile
+++ b/gitlab-pipeline-checker/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:3.9
+FROM alpine:3.24
 
 ENV VERSION=1.0
 
diff --git a/s3-sftp/Dockerfile b/s3-sftp/Dockerfile
index b4e8f1e3..6345de34 100644
--- a/s3-sftp/Dockerfile
+++ b/s3-sftp/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:3.5
+FROM alpine:3.24
 
 ARG S3FS_VERSION=v1.82
 
diff --git a/tox/Dockerfile b/tox/Dockerfile
index 6df4fb92..80f6fa08 100644
--- a/tox/Dockerfile
+++ b/tox/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:3.21
+FROM alpine:3.24
 
 ENV PATH="$PATH:/root/.pyenv/bin:/root/.pyenv/shims"
 ENV version=4.24.1