diff --git a/cluster/images/Dockerfile b/cluster/images/Dockerfile
index 48a24bf0dcfa..7413777c4e58 100644
--- a/cluster/images/Dockerfile
+++ b/cluster/images/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:3.17.1
+FROM alpine:3.18.2
 
 ARG BINARY
 
diff --git a/cluster/images/buildx.Dockerfile b/cluster/images/buildx.Dockerfile
index e18e9372dc03..48c2a54e8e03 100644
--- a/cluster/images/buildx.Dockerfile
+++ b/cluster/images/buildx.Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:3.17.1
+FROM alpine:3.18.2
 
 ARG BINARY
 ARG TARGETPLATFORM