diff --git a/lib/utils/typescript.js b/lib/utils/typescript.js
index 5f9d0d417..3f75c07f9 100644
--- a/lib/utils/typescript.js
+++ b/lib/utils/typescript.js
@@ -385,7 +385,9 @@ const __dirname = __dirname_fn(__filename);
     )
 
     // Write the transpiled file with updated imports
-    const tempFile = filePath.replace(/\.ts$/, '.temp.mjs')
+    // Use process.pid in the filename to avoid collisions when run-multiple forks
+    // several processes that all transpile the same .ts files concurrently.
+    const tempFile = filePath.replace(/\.ts$/, `.${process.pid}.temp.mjs`)
     fs.writeFileSync(tempFile, jsContent)
     transpiledFiles.set(filePath, tempFile)
   }