2 files changed, 3 insertions, 2 deletions

diff --git a/crates/proc_macro_srv/Cargo.toml b/crates/proc_macro_srv/Cargo.toml
index 6c8c28980..4c1b3036a 100644
--- a/crates/proc_macro_srv/Cargo.toml
+++ b/crates/proc_macro_srv/Cargo.toml
@@ -20,7 +20,7 @@ proc_macro_api = { path = "../proc_macro_api", version = "0.0.0" }
 test_utils = { path = "../test_utils", version = "0.0.0" }
 
 [dev-dependencies]
-cargo_metadata = "0.12.2"
+cargo_metadata = "0.13"
 
 # used as proc macro test targets
 serde_derive = "1.0.106"
diff --git a/crates/proc_macro_srv/src/tests/utils.rs b/crates/proc_macro_srv/src/tests/utils.rs
index 196abb8fc..22813052d 100644
--- a/crates/proc_macro_srv/src/tests/utils.rs
+++ b/crates/proc_macro_srv/src/tests/utils.rs
@@ -8,6 +8,7 @@ use test_utils::assert_eq_text;
 
 mod fixtures {
     use cargo_metadata::Message;
+    use std::path::PathBuf;
     use std::process::Command;
 
     // Use current project metadata to get the proc-macro dylib path
@@ -24,7 +25,7 @@ mod fixtures {
                     if artifact.target.kind.contains(&"proc-macro".to_string()) {
                         let repr = format!("{} {}", crate_name, version);
                         if artifact.package_id.repr.starts_with(&repr) {
-                            return artifact.filenames[0].clone();
+                            return PathBuf::from(&artifact.filenames[0]);
                         }
                     }
                 }