diff --git a/Dockerfile b/Dockerfile
index 72311f8..e7e191f 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -37,6 +37,9 @@ ARG PROTOC_VERSION=31.1-r1
 RUN --mount=type=cache,sharing=locked,target=/var/cache/apk \
     apk add --update protoc=${PROTOC_VERSION}
 
+# TODO: caching for this
+RUN rustup target add x86_64-unknown-linux-musl
+
 ENV CXXFLAGS="-include cstdint"
 RUN \
     # This one would be nice if it worked: