diff --git a/cluster/images/Dockerfile b/cluster/images/Dockerfile
index 6d198acee..98708d8ea 100644
--- a/cluster/images/Dockerfile
+++ b/cluster/images/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:3.18.2
+FROM alpine:3.18.3
 
 ARG BINARY
 
diff --git a/cluster/images/buildx.Dockerfile b/cluster/images/buildx.Dockerfile
index a1e1223a5..1f2f132fc 100644
--- a/cluster/images/buildx.Dockerfile
+++ b/cluster/images/buildx.Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:3.18.2
+FROM alpine:3.18.3
 
 ARG BINARY
 ARG TARGETPLATFORM