diff --git a/src/bundler/context.ts b/src/bundler/context.ts
index b9a2578..1071579 100644
--- a/src/bundler/context.ts
+++ b/src/bundler/context.ts
@@ -2,6 +2,7 @@ import * as Sentry from "@sentry/node";
 import chalk from "chalk";
 import ora, { Ora } from "ora";
 import { Filesystem, nodeFs } from "./fs.js";
+import { format } from "util";
 
 // How the error should be handled when running `npx convex dev`.
 export type ErrorType =
@@ -56,22 +57,27 @@ async function flushAndExit(exitCode: number, err?: any) {
   return process.exit(exitCode);
 }
 
+// console.error before it started being red by default in Node v20
+function logToStderr(...args: unknown[]) {
+  process.stderr.write(`${format(...args)}\n`);
+}
+
 // Handles clearing spinner so that it doesn't get messed up
 export function logError(ctx: Context, message: string) {
   ctx.spinner?.clear();
-  console.error(message);
+  logToStderr(message);
 }
 
 // Handles clearing spinner so that it doesn't get messed up
 export function logWarning(ctx: Context, message: string) {
   ctx.spinner?.clear();
-  console.error(message);
+  logToStderr(message);
 }
 
 // Handles clearing spinner so that it doesn't get messed up
 export function logMessage(ctx: Context, ...logged: any) {
   ctx.spinner?.clear();
-  console.error(...logged);
+  logToStderr(...logged);
 }
 
 // For the rare case writing output to stdout. Status and error messages
@@ -105,7 +111,7 @@ export function changeSpinner(ctx: Context, message: string) {
     // Add newline to prevent clobbering
     ctx.spinner.text = message + "\n";
   } else {
-    console.error(message);
+    logToStderr(message);
   }
 }
 
@@ -114,7 +120,7 @@ export function logFailure(ctx: Context, message: string) {
     ctx.spinner.fail(message);
     ctx.spinner = undefined;
   } else {
-    console.error(`${chalk.red(`✖`)} ${message}`);
+    logToStderr(`${chalk.red(`✖`)} ${message}`);
   }
 }
 
@@ -124,7 +130,7 @@ export function logFinishedStep(ctx: Context, message: string) {
     ctx.spinner.succeed(message);
     ctx.spinner = undefined;
   } else {
-    console.error(`${chalk.green(`✔`)} ${message}`);
+    logToStderr(`${chalk.green(`✔`)} ${message}`);
   }
 }
 
diff --git a/src/bundler/index.test.ts b/src/bundler/index.test.ts
index fc474ba..b9c6232 100644
--- a/src/bundler/index.test.ts
+++ b/src/bundler/index.test.ts
@@ -115,7 +115,7 @@ test("returns true when multiple imports and httpRouter is imported", async () =
 
 test("bundle warns about https.js|ts at top level", async () => {
   const fixtureDir = dirname + "/test_fixtures/js/project_with_https";
-  const logSpy = vi.spyOn(console, "error");
+  const logSpy = vi.spyOn(process.stderr, "write");
   await entryPoints(oneoffContext, fixtureDir, false);
   expect(logSpy).toHaveBeenCalledWith(expect.stringContaining("https"));
 });
@@ -123,7 +123,7 @@ test("bundle warns about https.js|ts at top level", async () => {
 test("bundle does not warn about https.js|ts which is not at top level", async () => {
   const fixtureDir =
     dirname + "/test_fixtures/js/project_with_https_not_at_top_level";
-  const logSpy = vi.spyOn(console, "error");
+  const logSpy = vi.spyOn(process.stderr, "write");
   await entryPoints(oneoffContext, fixtureDir, false);
   expect(logSpy).toHaveBeenCalledTimes(0);
 });
@@ -131,7 +131,7 @@ test("bundle does not warn about https.js|ts which is not at top level", async (
 test("bundle does not warn about https.js|ts which does not import httpRouter", async () => {
   const fixtureDir =
     dirname + "/test_fixtures/js/project_with_https_without_router";
-  const logSpy = vi.spyOn(console, "error");
+  const logSpy = vi.spyOn(process.stderr, "write");
   await entryPoints(oneoffContext, fixtureDir, false);
   expect(logSpy).toHaveBeenCalledTimes(0);
 });
diff --git a/src/cli/index.ts b/src/cli/index.ts
index 8e72cd2..94461e7 100644
--- a/src/cli/index.ts
+++ b/src/cli/index.ts
@@ -1,4 +1,3 @@
-#!/usr/bin/env node
 /* eslint-disable no-restricted-syntax */
 import { Command } from "@commander-js/extra-typings";
 import { init } from "./init.js";
@@ -29,10 +28,16 @@ import { env } from "./env.js";
 import { data } from "./data.js";
 import inquirer from "inquirer";
 import inquirerSearchList from "inquirer-search-list";
+import { format } from "util";
 
 const MINIMUM_MAJOR_VERSION = 16;
 const MINIMUM_MINOR_VERSION = 15;
 
+// console.error before it started being red by default in Node.js v20
+function logToStderr(...args: unknown[]) {
+  process.stderr.write(`${format(...args)}\n`);
+}
+
 async function main() {
   // If you want to use `@sentry/tracing` in your project directly, use a named import instead:
   // import * as SentryTracing from "@sentry/tracing"
@@ -63,25 +68,25 @@ async function main() {
     (majorVersion === MINIMUM_MAJOR_VERSION &&
       minorVersion < MINIMUM_MINOR_VERSION)
   ) {
-    console.error(
+    logToStderr(
       chalk.red(
         `Your Node version ${nodeVersion} is too old. Convex requires at least Node v${MINIMUM_MAJOR_VERSION}.${MINIMUM_MINOR_VERSION}`,
       ),
     );
-    console.error(
+    logToStderr(
       chalk.gray(
         `You can use ${chalk.bold(
           "nvm",
         )} (https://github.com/nvm-sh/nvm#installing-and-updating) to manage different versions of Node.`,
       ),
     );
-    console.error(
+    logToStderr(
       chalk.gray(
         "After installing `nvm`, install the latest version of Node with " +
           chalk.bold("`nvm install node`."),
       ),
     );
-    console.error(
+    logToStderr(
       chalk.gray(
         "Then, activate the installed version in your terminal with " +
           chalk.bold("`nvm use`."),
diff --git a/src/cli/lib/config.test.ts b/src/cli/lib/config.test.ts
index d6267e2..7d6b885 100644
--- a/src/cli/lib/config.test.ts
+++ b/src/cli/lib/config.test.ts
@@ -11,17 +11,16 @@ test("parseProjectConfig", async () => {
       throw new Error();
     },
   };
-  const consoleSpy = vi
-    .spyOn(global.console, "error")
-    .mockImplementation(() => {
-      // Do nothing
-    });
+  const stderrSpy = vi.spyOn(process.stderr, "write").mockImplementation(() => {
+    // Do nothing
+    return true;
+  });
   const assertParses = async (inp: any) => {
     expect(await parseProjectConfig(ctx, inp)).toEqual(inp);
   };
   const assertParseError = async (inp: any, err: string) => {
     await expect(parseProjectConfig(ctx, inp)).rejects.toThrow();
-    expect(consoleSpy).toHaveBeenCalledWith(err);
+    expect(stderrSpy).toHaveBeenCalledWith(err);
   };
 
   await assertParses({
@@ -60,6 +59,6 @@ test("parseProjectConfig", async () => {
       functions: "functions/",
       authInfo: [{}],
     },
-    "Expected `authInfo` in `convex.json` to be of type AuthInfo[]",
+    "Expected `authInfo` in `convex.json` to be of type AuthInfo[]\n",
   );
 });