diff --git a/.cargo/config.toml b/.cargo/config.toml
new file mode 100644
index 0000000..6e54197
--- /dev/null
+++ b/.cargo/config.toml
@@ -0,0 +1,3 @@
+[build]
+rustflags = ["--cfg", "tokio_unstable"]
+rustdocflags = ["--cfg", "tokio_unstable"]