diff --git a/Dockerfile b/Dockerfile
index 72f7c9c47..7683213bc 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:3.21.0
+FROM alpine:3.21.3
 
 RUN apk update
 RUN apk add --no-cache git
diff --git a/Dockerfile.bitbucket b/Dockerfile.bitbucket
index 3c1d0bb9b..6d73be875 100644
--- a/Dockerfile.bitbucket
+++ b/Dockerfile.bitbucket
@@ -1,4 +1,4 @@
-FROM alpine:3.21.0
+FROM alpine:3.21.3
 
 RUN apk update
 RUN apk add --no-cache git
diff --git a/Dockerfile.github b/Dockerfile.github
index 16cf32694..14881d7fe 100644
--- a/Dockerfile.github
+++ b/Dockerfile.github
@@ -1,4 +1,4 @@
-FROM alpine:3.21.0
+FROM alpine:3.21.3
 
 RUN apk update
 RUN apk add --no-cache git