diff --git a/Dockerfile b/Dockerfile
index 910b559..97fb4d2 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,5 +1,5 @@
 FROM scratch
-COPY --from=qemux/qemu-docker:4.20 / /
+COPY --from=qemux/qemu-docker:4.21 / /
 
 ARG DEBCONF_NOWARNINGS "yes"
 ARG DEBIAN_FRONTEND "noninteractive"