diff --git a/Cross.toml b/Cross.toml
index a69f5ecaf..acbad22e3 100644
--- a/Cross.toml
+++ b/Cross.toml
@@ -1,2 +1,3 @@
 [build]
+pre-build = ["apt-get update && apt-get install --assume-yes --no-install-recommends libclang-5.0-dev clang-5.0"]
 dockerfile = "./Dockerfile.build"