diff --git a/tests/snapshots/generate_plan_tests__node_nvmrc_invalid_lts.snap b/tests/snapshots/generate_plan_tests__node_nvmrc_invalid_lts.snap
new file mode 100644
index 000000000..ad79a5806
--- /dev/null
+++ b/tests/snapshots/generate_plan_tests__node_nvmrc_invalid_lts.snap
@@ -0,0 +1,54 @@
+---
+source: tests/generate_plan_tests.rs
+expression: plan
+---
+{
+  "providers": [],
+  "buildImage": "[build_image]",
+  "variables": {
+    "CI": "true",
+    "NIXPACKS_METADATA": "node",
+    "NODE_ENV": "production",
+    "NPM_CONFIG_PRODUCTION": "false"
+  },
+  "phases": {
+    "build": {
+      "name": "build",
+      "dependsOn": [
+        "install"
+      ],
+      "cacheDirectories": [
+        "node_modules/.cache"
+      ]
+    },
+    "install": {
+      "name": "install",
+      "dependsOn": [
+        "setup"
+      ],
+      "cmds": [
+        "npm ci"
+      ],
+      "cacheDirectories": [
+        "/root/.npm"
+      ],
+      "paths": [
+        "/app/node_modules/.bin"
+      ]
+    },
+    "setup": {
+      "name": "setup",
+      "nixPkgs": [
+        "nodejs_18",
+        "npm-8_x"
+      ],
+      "nixOverlays": [
+        "https://github.com/railwayapp/nix-npm-overlay/archive/main.tar.gz"
+      ],
+      "nixpkgsArchive": "[archive]"
+    }
+  },
+  "start": {
+    "cmd": "npm run start"
+  }
+}
diff --git a/tests/snapshots/generate_plan_tests__node_nvmrc_lts.snap b/tests/snapshots/generate_plan_tests__node_nvmrc_lts.snap
new file mode 100644
index 000000000..da280c251
--- /dev/null
+++ b/tests/snapshots/generate_plan_tests__node_nvmrc_lts.snap
@@ -0,0 +1,54 @@
+---
+source: tests/generate_plan_tests.rs
+expression: plan
+---
+{
+  "providers": [],
+  "buildImage": "[build_image]",
+  "variables": {
+    "CI": "true",
+    "NIXPACKS_METADATA": "node",
+    "NODE_ENV": "production",
+    "NPM_CONFIG_PRODUCTION": "false"
+  },
+  "phases": {
+    "build": {
+      "name": "build",
+      "dependsOn": [
+        "install"
+      ],
+      "cacheDirectories": [
+        "node_modules/.cache"
+      ]
+    },
+    "install": {
+      "name": "install",
+      "dependsOn": [
+        "setup"
+      ],
+      "cmds": [
+        "npm ci"
+      ],
+      "cacheDirectories": [
+        "/root/.npm"
+      ],
+      "paths": [
+        "/app/node_modules/.bin"
+      ]
+    },
+    "setup": {
+      "name": "setup",
+      "nixPkgs": [
+        "nodejs_20",
+        "npm-8_x"
+      ],
+      "nixOverlays": [
+        "https://github.com/railwayapp/nix-npm-overlay/archive/main.tar.gz"
+      ],
+      "nixpkgsArchive": "[archive]"
+    }
+  },
+  "start": {
+    "cmd": "npm run start"
+  }
+}