diff --git a/tests/runner/src/lib.rs b/tests/runner/src/lib.rs
index eb11384b..a25932ed 100644
--- a/tests/runner/src/lib.rs
+++ b/tests/runner/src/lib.rs
@@ -124,6 +124,7 @@ where
 
     run_cmd.stdout(Stdio::piped());
     run_cmd.stderr(Stdio::piped());
+    run_cmd.stdin(Stdio::null());
 
     let mut child = run_cmd.spawn().unwrap();