diff --git a/.cargo/config.toml b/.cargo/config.toml
index f4ad2dbf..41beade0 100644
--- a/.cargo/config.toml
+++ b/.cargo/config.toml
@@ -5,4 +5,9 @@ rustflags = [
     # tokio unstable is needed for tokio-console
     "--cfg", "tokio_unstable"
 ]
-rustdocflags = ["--cfg", "tokio_unstable"]
+rustdocflags = [
+    # potentially faster. https://nnethercote.github.io/perf-book/build-configuration.html
+    "-C", "target-cpu=native",
+    # tokio unstable is needed for tokio-console
+    "--cfg", "tokio_unstable"
+]