diff --git a/crates/dagger-rust/src/source.rs b/crates/dagger-rust/src/source.rs
index ee9a2e3..cc76945 100644
--- a/crates/dagger-rust/src/source.rs
+++ b/crates/dagger-rust/src/source.rs
@@ -89,7 +89,7 @@ impl RustSource {
 
         let mut excludes = self.exclude.clone();
         excludes.push("**/src".to_string());
-        excludes.push("**/test".to_string());
+        excludes.push("**/tests".to_string());
 
         let directory = self.client.host().directory_opts(
             source.display().to_string(),