diff --git a/L/LibUV/build_tarballs.jl b/L/LibUV/build_tarballs.jl
index 4ec5525235a..898a595144d 100644
--- a/L/LibUV/build_tarballs.jl
+++ b/L/LibUV/build_tarballs.jl
@@ -47,5 +47,6 @@ dependencies = [
 # Note: we explicitly lie about this because we don't have the new
 # versioning APIs worked out in BB yet.
 version = v"2.0.1"
-build_tarballs(ARGS, name, version, sources, script, platforms, products, dependencies; julia_compat="1.6")
-
+build_tarballs(ARGS, name, version, sources, script, platforms, products, dependencies;
+    # We need GCC 4.9+ for stdatomic.h
+    julia_compat="1.6", preferred_gcc_version=v"5")