diff --git a/packages/ts/test-envs/bun-package-manager-versioned/package.json b/packages/ts/test-envs/bun-package-manager-versioned/package.json
new file mode 100644
index 000000000..dd0ecc1c6
--- /dev/null
+++ b/packages/ts/test-envs/bun-package-manager-versioned/package.json
@@ -0,0 +1,19 @@
+{
+  "name": "bun-package-manager-versioned",
+  "version": "1.0.0",
+  "packageManager": "bun@1.2.20",
+  "description": "Test environment for versioned Bun package manager",
+  "scripts": {
+    "dev": "bun run src/index.ts",
+    "build": "bun build src/index.ts --outdir dist",
+    "test": "bun test",
+    "lint": "bunx eslint src/ --fix"
+  },
+  "dependencies": {
+    "fastify": "^5.6.1"
+  },
+  "devDependencies": {
+    "@types/node": "^20.0.0",
+    "eslint": "^8.0.0"
+  }
+}
diff --git a/packages/zig/test-envs/bun-package-manager-versioned/package.json b/packages/zig/test-envs/bun-package-manager-versioned/package.json
index 22996d0cb..dd0ecc1c6 100644
--- a/packages/zig/test-envs/bun-package-manager-versioned/package.json
+++ b/packages/zig/test-envs/bun-package-manager-versioned/package.json
@@ -10,7 +10,7 @@
     "lint": "bunx eslint src/ --fix"
   },
   "dependencies": {
-    "fastify": "^4.0.0"
+    "fastify": "^5.6.1"
   },
   "devDependencies": {
     "@types/node": "^20.0.0",