diff --git a/crates/uv-install-wheel/src/wheel.rs b/crates/uv-install-wheel/src/wheel.rs
index a349b8a79..8218f75ae 100644
--- a/crates/uv-install-wheel/src/wheel.rs
+++ b/crates/uv-install-wheel/src/wheel.rs
@@ -604,7 +604,7 @@ pub(crate) fn write_file_recorded(
     let hash = Sha256::new().chain_update(content.as_ref()).finalize();
     let encoded_hash = format!("sha256={}", BASE64URL_NOPAD.encode(&hash));
     record.push(RecordEntry {
-        path: relative_path.display().to_string(),
+        path: relative_path.portable_display().to_string(),
         hash: Some(encoded_hash),
         size: Some(content.as_ref().len() as u64),
     });
@@ -741,7 +741,8 @@ mod test {
     use crate::Error;
 
     use super::{
-        get_script_executable, parse_email_message_file, parse_wheel_file, read_record_file, Script,
+        get_script_executable, parse_email_message_file, parse_wheel_file, read_record_file,
+        write_installer_metadata, RecordEntry, Script,
     };
 
     #[test]
@@ -1016,4 +1017,36 @@ mod test {
 
         Ok(())
     }
+
+    #[test]
+    fn test_write_installer_metadata() {
+        let temp_dir = assert_fs::TempDir::new().unwrap();
+        let site_packages = temp_dir.path();
+        let mut record: Vec<RecordEntry> = Vec::new();
+        temp_dir
+            .child("foo-0.1.0.dist-info")
+            .create_dir_all()
+            .unwrap();
+        write_installer_metadata(
+            site_packages,
+            "foo-0.1.0",
+            true,
+            None,
+            None,
+            Some("uv"),
+            &mut record,
+        )
+        .unwrap();
+        let expected = [
+            "foo-0.1.0.dist-info/REQUESTED",
+            "foo-0.1.0.dist-info/INSTALLER",
+        ]
+        .map(ToString::to_string)
+        .to_vec();
+        let actual = record
+            .into_iter()
+            .map(|entry| entry.path)
+            .collect::<Vec<String>>();
+        assert_eq!(expected, actual);
+    }
 }
diff --git a/crates/uv-tool/src/lib.rs b/crates/uv-tool/src/lib.rs
index 94e67a6cc..081be9a72 100644
--- a/crates/uv-tool/src/lib.rs
+++ b/crates/uv-tool/src/lib.rs
@@ -418,12 +418,11 @@ pub fn entrypoint_paths(
         };
 
         let absolute_path = layout.scheme.scripts.join(path_in_scripts);
-        let script_name = entry
-            .path
-            .rsplit(std::path::MAIN_SEPARATOR)
-            .next()
-            .unwrap_or(&entry.path)
-            .to_string();
+        let script_name = relative_path
+            .file_name()
+            .and_then(|filename| filename.to_str())
+            .map(ToString::to_string)
+            .unwrap_or(entry.path);
         entrypoints.push((script_name, absolute_path));
     }