diff --git a/Dockerfile b/Dockerfile
index 1ee111e8..aab82841 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -6,7 +6,7 @@ COPY . .
 RUN make install-requirements && make generate && make install
 
 ############# gardener-extension-os-suse-chost
-FROM alpine:3.15.0 AS gardener-extension-os-suse-chost
+FROM alpine:3.15.4 AS gardener-extension-os-suse-chost
 
 COPY --from=builder /go/bin/gardener-extension-os-suse-chost /gardener-extension-os-suse-chost
 ENTRYPOINT ["/gardener-extension-os-suse-chost"]