diff --git a/src/scripts/verifyEnv.ts b/src/scripts/verifyEnv.ts
new file mode 100644
index 0000000..59ad8fc
--- /dev/null
+++ b/src/scripts/verifyEnv.ts
@@ -0,0 +1,37 @@
+import { $, sleep, spawn } from "bun";
+import { readFile } from "fs/promises";
+
+import { logStep } from "~/libs/logStep";
+
+await $`cp src/types/env.d.ts /tmp/env.d.ts`.quiet();
+
+await logStep(
+  'Generating "env.d.ts"',
+  () => import("./generateEnv"),
+  "Generated env.d.ts",
+);
+
+await logStep("Comparing env.d.ts", async () => {
+  function filterComments(content: Buffer) {
+    return content
+      .toString()
+      .split("\n")
+      .filter((line) => !line.trim().startsWith("//"))
+      .join("\n");
+  }
+
+  const currentFileContent = filterComments(await readFile("/tmp/env.d.ts"));
+  const generatedFileContent = filterComments(
+    await readFile("src/types/env.d.ts"),
+  );
+
+  if (currentFileContent === generatedFileContent) {
+    console.log("env.d.ts is up to date");
+    return;
+  }
+
+  spawn({ cmd: ["sl", "diff", "src/types/env.d.ts"], stdout: "inherit" });
+  // add 1 second to make sure spawn completes
+  await sleep(1000);
+  throw new Error("env.d.ts is out of date");
+});