diff --git a/cluster/images/Dockerfile b/cluster/images/Dockerfile
index 2aec28f7b62b..9fe609327db5 100644
--- a/cluster/images/Dockerfile
+++ b/cluster/images/Dockerfile
@@ -12,7 +12,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-FROM alpine:3.21.0
+FROM alpine:3.21.2
 
 ARG BINARY
 
diff --git a/cluster/images/buildx.Dockerfile b/cluster/images/buildx.Dockerfile
index 4105099703e7..70730a694ab4 100644
--- a/cluster/images/buildx.Dockerfile
+++ b/cluster/images/buildx.Dockerfile
@@ -12,7 +12,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-FROM alpine:3.21.0
+FROM alpine:3.21.2
 
 ARG BINARY
 ARG TARGETPLATFORM