diff --git a/package.json b/package.json
index ab41b16..07fdeac 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "isolate-package",
-  "version": "1.17.0",
+  "version": "1.18.0-0",
   "description": "Isolate a monorepo package with its shared dependencies to form a self-contained directory, compatible with Firebase deploy",
   "author": "Thijs Koerselman",
   "license": "MIT",
diff --git a/src/isolate.ts b/src/isolate.ts
index b04ba6f..451c100 100644
--- a/src/isolate.ts
+++ b/src/isolate.ts
@@ -213,7 +213,7 @@ export async function isolate(
       log.debug("Generating pnpm-workspace.yaml for Rush workspace");
       log.debug("Packages folder names:", packagesFolderNames);
 
-      const packages = packagesFolderNames.map((x) => x + "/*");
+      const packages = packagesFolderNames.map((x) => path.join(x, "/*"));
 
       await writeTypedYamlSync(path.join(isolateDir, "pnpm-workspace.yaml"), {
         packages,
diff --git a/src/lib/registry/create-packages-registry.ts b/src/lib/registry/create-packages-registry.ts
index 4209f79..8e321a9 100644
--- a/src/lib/registry/create-packages-registry.ts
+++ b/src/lib/registry/create-packages-registry.ts
@@ -36,11 +36,11 @@ export async function createPackagesRegistry(
 
         if (!fs.existsSync(manifestPath)) {
           log.warn(
-            `Ignoring directory ./${rootRelativeDir} because it does not contain a package.json file`
+            `Ignoring directory ${rootRelativeDir} because it does not contain a package.json file`
           );
           return;
         } else {
-          log.debug(`Registering package ./${rootRelativeDir}`);
+          log.debug(`Registering package ${rootRelativeDir}`);
 
           const manifest = await readTypedJson<PackageManifest>(
             path.join(absoluteDir, "package.json")
diff --git a/src/lib/utils/get-relative-path.ts b/src/lib/utils/get-relative-path.ts
index ab6e70a..78bb5cb 100644
--- a/src/lib/utils/get-relative-path.ts
+++ b/src/lib/utils/get-relative-path.ts
@@ -1,15 +1,13 @@
+import { join } from "node:path";
+
 export function getRootRelativePath(path: string, rootPath: string) {
   const strippedPath = path.replace(rootPath, "");
 
-  return strippedPath.startsWith("/")
-    ? `(root)${strippedPath}`
-    : `(root)/${strippedPath}`;
+  return join("(root)", strippedPath);
 }
 
 export function getIsolateRelativePath(path: string, isolatePath: string) {
   const strippedPath = path.replace(isolatePath, "");
 
-  return strippedPath.startsWith("/")
-    ? `(isolate)${strippedPath}`
-    : `(isolate)/${strippedPath}`;
+  return join("(isolate)", strippedPath);
 }