diff --git a/.go-version b/.go-version
index e4a973f..ae96cc7 100644
--- a/.go-version
+++ b/.go-version
@@ -1 +1 @@
-1.24.2
+1.24.3
diff --git a/Dockerfile b/Dockerfile
index ebf8383..c226d94 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM golang:1.24.2-alpine3.21 as builder
+FROM golang:1.24.3-alpine3.21 as builder
 
 RUN apk add --no-cache musl-dev gcc libpcap libpcap-dev
 
@@ -11,7 +11,7 @@ RUN go mod download
 RUN go build
 
 # ------------------------------------------------------------------------------
-FROM alpine:3.19
+FROM alpine:3.21
 
 RUN apk add --no-cache libpcap
 
diff --git a/go.mod b/go.mod
index c19f225..81dc0ad 100644
--- a/go.mod
+++ b/go.mod
@@ -1,6 +1,6 @@
 module github.com/elastic/stream
 
-go 1.24.2
+go 1.24.3
 
 require (
 	cloud.google.com/go/pubsub v1.37.0