diff --git a/ng-broker/build.rs b/ng-broker/build.rs
new file mode 100644
index 0000000..bd0dfc1
--- /dev/null
+++ b/ng-broker/build.rs
@@ -0,0 +1,5 @@
+fn main() {
+    if std::env::var("DOCS_RS").is_ok() {
+        println!("cargo:rustc-cfg=docsrs");
+    }
+}