diff --git a/docker/aarch64/alpine b/docker/aarch64/alpine
index b6f62e92..dfac5959 100644
--- a/docker/aarch64/alpine
+++ b/docker/aarch64/alpine
@@ -1,5 +1,5 @@
 #comment
-FROM         arm64v8/alpine:3.21.3
+FROM         arm64v8/alpine:3.21.4
 MAINTAINER   Scott E. Graves <scott.e.graves@protonmail.com>
 CMD          bash
 
diff --git a/docker/x86_64/alpine b/docker/x86_64/alpine
index ad24210e..2d7026cb 100644
--- a/docker/x86_64/alpine
+++ b/docker/x86_64/alpine
@@ -1,5 +1,5 @@
 #comment
-FROM         alpine:3.21.3
+FROM         alpine:3.21.4
 MAINTAINER   Scott E. Graves <scott.e.graves@protonmail.com>
 CMD          bash
 
diff --git a/docker/x86_64/mingw64 b/docker/x86_64/mingw64
index 09ef66a4..bf93e5ca 100644
--- a/docker/x86_64/mingw64
+++ b/docker/x86_64/mingw64
@@ -1,5 +1,5 @@
 #comment
-FROM alpine:3.21.3
+FROM alpine:3.21.4
 
 RUN apk update
 RUN apk upgrade