diff --git a/4.2/Dockerfile b/4.2/Dockerfile
index 6b284a1..806a7f1 100644
--- a/4.2/Dockerfile
+++ b/4.2/Dockerfile
@@ -14,8 +14,8 @@ ENV QEMU_KEYS \
 
 # https://www.qemu.org/download/#source
 # https://download.qemu.org/?C=M;O=D
-ENV QEMU_VERSION 4.2.0
-ENV QEMU_URL https://download.qemu.org/qemu-4.2.0.tar.xz
+ENV QEMU_VERSION 4.2.1
+ENV QEMU_URL https://download.qemu.org/qemu-4.2.1.tar.xz
 
 RUN set -eux; \
 	\