diff --git a/src/compiler/rust.rs b/src/compiler/rust.rs
index dca3ddf9e..3caa6a1c9 100644
--- a/src/compiler/rust.rs
+++ b/src/compiler/rust.rs
@@ -1896,6 +1896,17 @@ impl pkg::InputsPackager for RustInputsPackager {
             let dist_input_path = path_transformer.as_dist(&input_path).with_context(|| {
                 format!("unable to transform input path {}", input_path.display())
             })?;
+
+            if input_path.ends_with("src/lib.rs") {
+                let cargo_toml_path = input_path.parent().expect("No parent").parent().expect("No parent").join("Cargo.toml");
+                if cargo_toml_path.is_file() {
+                    let dist_cargo_toml_path = path_transformer.as_dist(&cargo_toml_path).with_context(|| {
+                        format!("unable to transform input path {}", cargo_toml_path.display())
+                    })?;
+                    tar_inputs.push((cargo_toml_path, dist_cargo_toml_path))
+                }
+            }
+
             tar_inputs.push((input_path, dist_input_path))
         }