diff --git a/Dockerfile b/Dockerfile
index 96b0697..cdb49e4 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1 +1 @@
-FROM golang:1.21.3
+FROM golang:1.21.4
diff --git a/docker-compose.test.yml b/docker-compose.test.yml
index 71f8e88..5ef8c51 100644
--- a/docker-compose.test.yml
+++ b/docker-compose.test.yml
@@ -3,7 +3,7 @@ version: "2.4"
 
 services:
   sut:
-    image: golang:1.21.3
+    image: golang:1.21.4
     volumes:
       - .:/go/src/github.com/balena-io/sshproxy
     working_dir: /go/src/github.com/balena-io/sshproxy