diff --git a/package.json b/package.json
index 2936e51..764b3c4 100644
--- a/package.json
+++ b/package.json
@@ -36,7 +36,7 @@
     "tiny-jsonc": "^1.0.1",
     "tiny-readdir-glob": "^1.1.0",
     "tiny-spinner": "^2.0.3",
-    "worktank": "^2.5.2",
+    "worktank": "^2.6.0",
     "zeptomatch": "^1.2.2"
   },
   "peerDependencies": {
diff --git a/src/prettier_parallel.ts b/src/prettier_parallel.ts
index 4bac202..18c61f3 100644
--- a/src/prettier_parallel.ts
+++ b/src/prettier_parallel.ts
@@ -8,6 +8,7 @@ function makeParallel(options: Options): Prettier {
     name: "prettier",
     size: options.parallelWorkers || Math.max(1, os.cpus().length - 1),
     methods: new URL("./prettier_serial.js", import.meta.url),
+    warmup: true,
   });
 
   return {