diff --git a/clippy_workspace_tests/build.rs b/clippy_workspace_tests/build.rs
index 3cc95765210..3507168a3a9 100644
--- a/clippy_workspace_tests/build.rs
+++ b/clippy_workspace_tests/build.rs
@@ -1,3 +1,5 @@
+#![deny(clippy::print_stdout)]
+
 fn main() {
     // Test for #6041
     println!("Hello");