diff --git a/package.json b/package.json
index 9d5d551..9d18f38 100644
--- a/package.json
+++ b/package.json
@@ -36,7 +36,7 @@
     "nanotar": "0.2.0",
     "tsx": "4.20.3",
     "typescript": "5.8.3",
-    "vitest": "^3.1.4",
+    "vitest": "3.1.4",
     "wrangler": "4.24.3"
   },
   "pnpm": {
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 4968b52..ba2efc8 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -55,7 +55,7 @@ importers:
         specifier: 5.8.3
         version: 5.8.3
       vitest:
-        specifier: ^3.1.4
+        specifier: 3.1.4
         version: 3.1.4(@types/debug@4.1.12)(@types/node@22.13.9)(tsx@4.20.3)(yaml@2.8.0)
       wrangler:
         specifier: 4.24.3