diff --git a/Dockerfile.build b/Dockerfile.build
index f08c026..431cd74 100644
--- a/Dockerfile.build
+++ b/Dockerfile.build
@@ -1,5 +1,5 @@
 # explicitly use Debian for maximum cross-architecture compatibility
-FROM debian:buster-slim
+FROM debian:bullseye-slim
 
 RUN set -eux; \
 	apt-get update; \
@@ -36,7 +36,7 @@ RUN set -eux; \
 	rm -rf /var/lib/apt/lists/*
 
 # https://musl.libc.org/releases.html
-ENV MUSL_VERSION 1.1.24
+ENV MUSL_VERSION 1.2.2
 RUN set -eux; \
 	wget -O musl.tgz.asc "https://musl.libc.org/releases/musl-$MUSL_VERSION.tar.gz.asc"; \
 	wget -O musl.tgz "https://musl.libc.org/releases/musl-$MUSL_VERSION.tar.gz"; \
diff --git a/amd64/hello-world/hello b/amd64/hello-world/hello
index 5052f25..8a9e768 100755
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diff --git a/arm32v5/hello-world/hello b/arm32v5/hello-world/hello
index f237263..fd0198e 100755
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diff --git a/arm32v7/hello-world/hello b/arm32v7/hello-world/hello
index 16286c2..55126bc 100755
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diff --git a/arm64v8/hello-world/hello b/arm64v8/hello-world/hello
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diff --git a/i386/hello-world/hello b/i386/hello-world/hello
index c358369..2f91f17 100755
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diff --git a/mips64le/hello-world/hello b/mips64le/hello-world/hello
index 3656791..1925871 100755
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diff --git a/ppc64le/hello-world/hello b/ppc64le/hello-world/hello
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diff --git a/riscv64/hello-world/hello b/riscv64/hello-world/hello
index 9fe183d..5f017a5 100755
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diff --git a/s390x/hello-world/hello b/s390x/hello-world/hello
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