diff --git a/init/src/init_test.ts b/init/src/init_test.ts
index e13c7ef6516..e3d6acd5032 100644
--- a/init/src/init_test.ts
+++ b/init/src/init_test.ts
@@ -1,7 +1,7 @@
 import { expect } from "@std/expect";
 import { initProject, InitStep, type MockTTY } from "./init.ts";
 import * as path from "@std/path";
-import { getStdOutput, withBrowser } from "../../tests/test_utils.tsx";
+import { withBrowser } from "../../tests/test_utils.tsx";
 import { waitForText } from "../../tests/test_utils.tsx";
 import { withChildProcessServer } from "../../tests/test_utils.tsx";
 
@@ -245,9 +245,12 @@ Deno.test("init - errors on missing build cache in prod", async () => {
       stdout: "piped",
       stderr: "piped",
       cwd: dir,
+      env: {
+        NO_COLOR: "true",
+      },
     }).output();
 
-    const { stderr } = getStdOutput(cp);
+    const stderr = new TextDecoder().decode(cp.stderr);
     expect(cp.code).toEqual(1);
 
     expect(stderr).toMatch(/Found 1 islands, but did not/);
diff --git a/src/dev/update_check_test.ts b/src/dev/update_check_test.ts
index a4de6b6dbde..97817fc1d0b 100644
--- a/src/dev/update_check_test.ts
+++ b/src/dev/update_check_test.ts
@@ -1,7 +1,6 @@
 import * as path from "@std/path";
 import denoJson from "../../deno.json" with { type: "json" };
 import { WEEK } from "@std/datetime";
-import { getStdOutput } from "../../tests/test_utils.tsx";
 import { expect } from "@std/expect";
 import type { CheckFile } from "./update_check.ts";
 
@@ -59,7 +58,7 @@ Deno.test("skips update check on specific environment variables", async (t) => {
         stdout: "piped",
       }).output();
 
-      const { stdout } = getStdOutput(out);
+      const stdout = new TextDecoder().decode(out.stdout);
       expect(stdout).not.toMatch(/Fresh 1\.30\.0 is available/);
 
       await Deno.remove(tmpDirName, { recursive: true });
@@ -91,12 +90,13 @@ Deno.test("shows update message on version mismatch", async () => {
       CI: "false",
       TEST_HOME: tmpDirName,
       LATEST_VERSION: "999.999.0",
+      NO_COLOR: "true",
     },
     stderr: "piped",
     stdout: "piped",
   }).output();
 
-  const { stdout } = getStdOutput(out);
+  const stdout = new TextDecoder().decode(out.stdout);
   expect(stdout).toMatch(/Fresh 999\.999\.0 is available/);
 
   // Updates check file
@@ -132,7 +132,7 @@ Deno.test("only fetch new version defined by interval", async (t) => {
       stdout: "piped",
     }).output();
 
-    const { stdout } = getStdOutput(out);
+    const stdout = new TextDecoder().decode(out.stdout);
     expect(stdout).toMatch(/fetching latest version/);
   });
 
@@ -154,7 +154,7 @@ Deno.test("only fetch new version defined by interval", async (t) => {
       stdout: "piped",
     }).output();
 
-    const { stdout } = getStdOutput(out);
+    const stdout = new TextDecoder().decode(out.stdout);
     expect(stdout).not.toMatch(/fetching latest version/);
   });
 
@@ -174,7 +174,7 @@ Deno.test("only fetch new version defined by interval", async (t) => {
       },
     }).output();
 
-    const { stdout } = getStdOutput(out);
+    const stdout = new TextDecoder().decode(out.stdout);
     expect(stdout).toMatch(/fetching latest version/);
   });
 
@@ -211,7 +211,7 @@ Deno.test("updates current version in cache file", async () => {
     stdout: "piped",
   }).output();
 
-  const { stdout } = getStdOutput(out);
+  const stdout = new TextDecoder().decode(out.stdout);
   expect(stdout).not.toMatch(/Fresh .* is available/);
 
   await Deno.remove(tmpDirName, { recursive: true });
@@ -248,7 +248,7 @@ Deno.test("only shows update message when current < latest", async () => {
     stdout: "piped",
   }).output();
 
-  const { stdout } = getStdOutput(out);
+  const stdout = new TextDecoder().decode(out.stdout);
   expect(stdout).not.toMatch(/Fresh .* is available/);
 
   await Deno.remove(tmpDirName, { recursive: true });
@@ -285,7 +285,7 @@ Deno.test("migrates to last_shown property", async () => {
     stdout: "piped",
   }).output();
 
-  const { stdout } = getStdOutput(out);
+  const stdout = new TextDecoder().decode(out.stdout);
   expect(stdout).toMatch(/Fresh .* is available/);
 
   const checkFileAfter = JSON.parse(
@@ -335,7 +335,7 @@ Deno.test("doesn't show update if last_shown + interval >= today", async () => {
     stdout: "piped",
   }).output();
 
-  const { stdout } = getStdOutput(out);
+  const stdout = new TextDecoder().decode(out.stdout);
   expect(stdout).not.toMatch(/Fresh .* is available/);
 
   await Deno.remove(tmpDirName, { recursive: true });
@@ -378,7 +378,7 @@ Deno.test(
       stdout: "piped",
     }).output();
 
-    const { stdout } = getStdOutput(out);
+    const stdout = new TextDecoder().decode(out.stdout);
     expect(stdout).toMatch(/Fresh .* is available/);
 
     const checkFileAfter = JSON.parse(
diff --git a/tests/test_utils.tsx b/tests/test_utils.tsx
index f98274a2aa7..3c6d054bca3 100644
--- a/tests/test_utils.tsx
+++ b/tests/test_utils.tsx
@@ -351,18 +351,6 @@ export async function waitFor(
   throw new Error(`Timed out`);
 }
 
-export function getStdOutput(
-  out: Deno.CommandOutput,
-): { stdout: string; stderr: string } {
-  const decoder = new TextDecoder();
-  const stdout = colors.stripAnsiCode(decoder.decode(out.stdout));
-
-  const decoderErr = new TextDecoder();
-  const stderr = colors.stripAnsiCode(decoderErr.decode(out.stderr));
-
-  return { stdout, stderr };
-}
-
 export const allIslandApp = new App()
   .island(getIsland("Counter.tsx"), "Counter", Counter)
   .island(