diff --git a/package.json b/package.json
index 26b3128..fcef448 100644
--- a/package.json
+++ b/package.json
@@ -42,8 +42,6 @@
     "ext": "^1.7.0",
     "fast-glob": "^3.3.3",
     "fs-extra": "^10.1.0",
-    "is-interactive": "^1",
-    "is-unicode-supported": "^0.1",
     "js-yaml": "^4.1.0",
     "log": "^6.3.1",
     "log-node": "^8.0.3",
diff --git a/src/cli/Output.js b/src/cli/Output.js
index d7b025a..c62554a 100644
--- a/src/cli/Output.js
+++ b/src/cli/Output.js
@@ -5,7 +5,6 @@ const symbols = require('./symbols');
 const fs = require('fs');
 const { stripVTControlCharacters: stripAnsi } = require('node:util');
 const path = require('path');
-const isInteractiveTerminal = require('is-interactive');
 const { PassThrough } = require('stream');
 
 /**
@@ -29,7 +28,9 @@ class Output {
     this.stdout = disableIO ? new PassThrough() : process.stdout;
     this.stderr = disableIO ? new PassThrough() : process.stderr;
     this.logsFileStream = disableIO ? new PassThrough() : this.openLogsFile();
-    if (!disableIO && isInteractiveTerminal()) {
+    const isInteractive = process.stdin.isTTY && process.stdout.isTTY && !process.env.CI;
+
+    if (!disableIO && isInteractive) {
       this.interactiveStdout = process.stdout;
       this.interactiveStderr = process.stderr;
       this.interactiveStdin = process.stdin;
@@ -37,7 +38,7 @@ class Output {
 
     // We want to apply it only in non-test environment so we check this only if
     // disableIO is not explicitly set to true
-    if (!isInteractiveTerminal() && disableIO === false) {
+    if (!isInteractive && disableIO === false) {
       // We also want to enable verbose by default for non-interactive environments
       this.verboseMode = true;
     }
diff --git a/src/cli/Progresses.js b/src/cli/Progresses.js
index 9e7c25e..c95bff3 100644
--- a/src/cli/Progresses.js
+++ b/src/cli/Progresses.js
@@ -9,7 +9,7 @@
 const cliCursor = require('cli-cursor');
 const { stderrCliColors: colors } = require('./colors');
 const symbols = require('./symbols');
-const isUnicodeSupported = require('is-unicode-supported');
+const isUnicodeSupported = require('./is-unicode-supported');
 const { stripVTControlCharacters: stripAnsi } = require('node:util');
 const { createRegistry, hasOwn } = require('../utils/safe-object');
 
diff --git a/src/cli/is-unicode-supported.js b/src/cli/is-unicode-supported.js
new file mode 100644
index 0000000..11efe64
--- /dev/null
+++ b/src/cli/is-unicode-supported.js
@@ -0,0 +1,15 @@
+'use strict';
+
+module.exports = () => {
+  if (process.platform !== 'win32') {
+    return true;
+  }
+
+  return (
+    Boolean(process.env.CI) ||
+    Boolean(process.env.WT_SESSION) ||
+    process.env.TERM_PROGRAM === 'vscode' ||
+    process.env.TERM === 'xterm-256color' ||
+    process.env.TERM === 'alacritty'
+  );
+};
diff --git a/src/cli/symbols.js b/src/cli/symbols.js
index 588ef13..6d58cf5 100644
--- a/src/cli/symbols.js
+++ b/src/cli/symbols.js
@@ -1,6 +1,6 @@
 'use strict';
 
-const isUnicodeSupported = require('is-unicode-supported');
+const isUnicodeSupported = require('./is-unicode-supported');
 
 const main = {
   success: '✔',
diff --git a/test/unit/src/cli/Output.test.js b/test/unit/src/cli/Output.test.js
index ee22060..c7dcb31 100644
--- a/test/unit/src/cli/Output.test.js
+++ b/test/unit/src/cli/Output.test.js
@@ -2,10 +2,28 @@
 
 const expect = require('chai').expect;
 const proxyquire = require('proxyquire');
+const sinon = require('sinon');
+const { PassThrough } = require('stream');
 const Output = require('../../../../src/cli/Output');
 const colors = require('../../../../src/cli/colors');
 const readStream = require('../../read-stream');
 
+const setProperty = (object, property, value) => {
+  Object.defineProperty(object, property, {
+    configurable: true,
+    writable: true,
+    value,
+  });
+};
+
+const restoreProperty = (object, property, descriptor) => {
+  if (descriptor) {
+    Object.defineProperty(object, property, descriptor);
+  } else {
+    delete object[property];
+  }
+};
+
 describe('test/unit/lib/cli/Output.test.js', () => {
   /** @type {Output} */
   let output;
@@ -144,4 +162,100 @@ describe('test/unit/lib/cli/Output.test.js', () => {
       'Error: TypeError: An error\n    at Context.<anonymous>'
     );
   });
+
+  describe('interactivity detection', () => {
+    let originalStdinIsTTYDescriptor;
+    let originalStdoutIsTTYDescriptor;
+    let originalCI;
+    let hadCI;
+    let openLogsFileStub;
+
+    beforeEach(() => {
+      originalStdinIsTTYDescriptor = Object.getOwnPropertyDescriptor(process.stdin, 'isTTY');
+      originalStdoutIsTTYDescriptor = Object.getOwnPropertyDescriptor(process.stdout, 'isTTY');
+      hadCI = Object.prototype.hasOwnProperty.call(process.env, 'CI');
+      originalCI = process.env.CI;
+      openLogsFileStub = sinon.stub(Output.prototype, 'openLogsFile').returns(new PassThrough());
+    });
+
+    afterEach(() => {
+      openLogsFileStub.restore();
+      restoreProperty(process.stdin, 'isTTY', originalStdinIsTTYDescriptor);
+      restoreProperty(process.stdout, 'isTTY', originalStdoutIsTTYDescriptor);
+      if (hadCI) {
+        process.env.CI = originalCI;
+      } else {
+        delete process.env.CI;
+      }
+    });
+
+    const createOutput = ({ stdinIsTTY, stdoutIsTTY, ci } = {}) => {
+      setProperty(process.stdin, 'isTTY', stdinIsTTY);
+      setProperty(process.stdout, 'isTTY', stdoutIsTTY);
+      if (ci === undefined) {
+        delete process.env.CI;
+      } else {
+        process.env.CI = ci;
+      }
+
+      return new Output(false);
+    };
+
+    it('enables interactive streams when stdin and stdout are TTY outside CI', () => {
+      const localOutput = createOutput({ stdinIsTTY: true, stdoutIsTTY: true });
+
+      expect(localOutput.interactiveStdout).to.equal(process.stdout);
+      expect(localOutput.interactiveStderr).to.equal(process.stderr);
+      expect(localOutput.interactiveStdin).to.equal(process.stdin);
+      expect(localOutput.verboseMode).to.equal(false);
+    });
+
+    it('disables interactivity when stdin is not TTY', () => {
+      const localOutput = createOutput({ stdinIsTTY: false, stdoutIsTTY: true });
+
+      expect(localOutput.interactiveStdout).to.equal(undefined);
+      expect(localOutput.interactiveStderr).to.equal(undefined);
+      expect(localOutput.interactiveStdin).to.equal(undefined);
+      expect(localOutput.verboseMode).to.equal(true);
+    });
+
+    it('disables interactivity when stdout is not TTY', () => {
+      const localOutput = createOutput({ stdinIsTTY: true, stdoutIsTTY: false });
+
+      expect(localOutput.interactiveStdout).to.equal(undefined);
+      expect(localOutput.interactiveStderr).to.equal(undefined);
+      expect(localOutput.interactiveStdin).to.equal(undefined);
+      expect(localOutput.verboseMode).to.equal(true);
+    });
+
+    it('disables interactivity when CI is truthy', () => {
+      const localOutput = createOutput({ stdinIsTTY: true, stdoutIsTTY: true, ci: '1' });
+
+      expect(localOutput.interactiveStdout).to.equal(undefined);
+      expect(localOutput.interactiveStderr).to.equal(undefined);
+      expect(localOutput.interactiveStdin).to.equal(undefined);
+      expect(localOutput.verboseMode).to.equal(true);
+    });
+
+    it('matches Serverless by allowing interactivity when CI is empty', () => {
+      const localOutput = createOutput({ stdinIsTTY: true, stdoutIsTTY: true, ci: '' });
+
+      expect(localOutput.interactiveStdout).to.equal(process.stdout);
+      expect(localOutput.interactiveStdin).to.equal(process.stdin);
+      expect(localOutput.verboseMode).to.equal(false);
+    });
+
+    it('does not enable interactive streams when IO is disabled', () => {
+      setProperty(process.stdin, 'isTTY', true);
+      setProperty(process.stdout, 'isTTY', true);
+      delete process.env.CI;
+
+      const localOutput = new Output(false, true);
+
+      expect(localOutput.interactiveStdout).to.equal(undefined);
+      expect(localOutput.interactiveStderr).to.equal(undefined);
+      expect(localOutput.interactiveStdin).to.equal(undefined);
+      expect(localOutput.verboseMode).to.equal(false);
+    });
+  });
 });
diff --git a/test/unit/src/cli/Progresses.test.js b/test/unit/src/cli/Progresses.test.js
index 245296e..aa47471 100644
--- a/test/unit/src/cli/Progresses.test.js
+++ b/test/unit/src/cli/Progresses.test.js
@@ -1,11 +1,17 @@
 'use strict';
 
 const expect = require('chai').expect;
+const proxyquire = require('proxyquire');
 const sinon = require('sinon');
 
 const Progresses = require('../../../../src/cli/Progresses');
 
 describe('test/unit/src/cli/Progresses.test.js', () => {
+  const loadProgresses = (isUnicodeSupported) =>
+    proxyquire.noCallThru().load('../../../../src/cli/Progresses', {
+      './is-unicode-supported': () => isUnicodeSupported,
+    });
+
   const createProgresses = (columns = 5, rows = 3) => {
     const progresses = Object.create(Progresses.prototype);
     progresses.output = {
@@ -51,4 +57,41 @@ describe('test/unit/src/cli/Progresses.test.js', () => {
     expect(progresses.exists('service')).to.deep.include({ status: 'success', text: 'done' });
     expect(progresses.exists('constructor')).to.equal(undefined);
   });
+
+  it('uses dots spinner when unicode is supported', () => {
+    const LocalProgresses = loadProgresses(true);
+    const bindSigintStub = sinon.stub(LocalProgresses.prototype, 'bindSigint');
+
+    try {
+      const progresses = new LocalProgresses({});
+
+      expect(progresses.options.spinner.frames).to.deep.equal([
+        '⠋',
+        '⠙',
+        '⠹',
+        '⠸',
+        '⠼',
+        '⠴',
+        '⠦',
+        '⠧',
+        '⠇',
+        '⠏',
+      ]);
+    } finally {
+      bindSigintStub.restore();
+    }
+  });
+
+  it('uses dashes spinner when unicode is not supported', () => {
+    const LocalProgresses = loadProgresses(false);
+    const bindSigintStub = sinon.stub(LocalProgresses.prototype, 'bindSigint');
+
+    try {
+      const progresses = new LocalProgresses({});
+
+      expect(progresses.options.spinner.frames).to.deep.equal(['-', '_']);
+    } finally {
+      bindSigintStub.restore();
+    }
+  });
 });
diff --git a/test/unit/src/cli/is-unicode-supported.test.js b/test/unit/src/cli/is-unicode-supported.test.js
new file mode 100644
index 0000000..3f03057
--- /dev/null
+++ b/test/unit/src/cli/is-unicode-supported.test.js
@@ -0,0 +1,91 @@
+'use strict';
+
+const expect = require('chai').expect;
+
+const isUnicodeSupported = require('../../../../src/cli/is-unicode-supported');
+
+describe('test/unit/src/cli/is-unicode-supported.test.js', () => {
+  let originalPlatformDescriptor;
+  let originalEnv;
+
+  const setPlatform = (platform) => {
+    Object.defineProperty(process, 'platform', {
+      configurable: true,
+      value: platform,
+    });
+  };
+
+  beforeEach(() => {
+    originalPlatformDescriptor = Object.getOwnPropertyDescriptor(process, 'platform');
+    originalEnv = {
+      CI: process.env.CI,
+      WT_SESSION: process.env.WT_SESSION,
+      TERM_PROGRAM: process.env.TERM_PROGRAM,
+      TERM: process.env.TERM,
+    };
+
+    delete process.env.CI;
+    delete process.env.WT_SESSION;
+    delete process.env.TERM_PROGRAM;
+    delete process.env.TERM;
+  });
+
+  afterEach(() => {
+    Object.defineProperty(process, 'platform', originalPlatformDescriptor);
+
+    for (const [key, value] of Object.entries(originalEnv)) {
+      if (value === undefined) {
+        delete process.env[key];
+      } else {
+        process.env[key] = value;
+      }
+    }
+  });
+
+  it('supports unicode outside Windows', () => {
+    setPlatform('darwin');
+
+    expect(isUnicodeSupported()).to.equal(true);
+  });
+
+  it('does not support unicode on unknown Windows terminals', () => {
+    setPlatform('win32');
+
+    expect(isUnicodeSupported()).to.equal(false);
+  });
+
+  it('supports unicode on Windows in CI', () => {
+    setPlatform('win32');
+    process.env.CI = '1';
+
+    expect(isUnicodeSupported()).to.equal(true);
+  });
+
+  it('supports unicode in Windows Terminal', () => {
+    setPlatform('win32');
+    process.env.WT_SESSION = 'session-id';
+
+    expect(isUnicodeSupported()).to.equal(true);
+  });
+
+  it('supports unicode in VS Code terminal on Windows', () => {
+    setPlatform('win32');
+    process.env.TERM_PROGRAM = 'vscode';
+
+    expect(isUnicodeSupported()).to.equal(true);
+  });
+
+  it('supports unicode in xterm-compatible Windows terminals', () => {
+    setPlatform('win32');
+    process.env.TERM = 'xterm-256color';
+
+    expect(isUnicodeSupported()).to.equal(true);
+  });
+
+  it('supports unicode in Alacritty on Windows', () => {
+    setPlatform('win32');
+    process.env.TERM = 'alacritty';
+
+    expect(isUnicodeSupported()).to.equal(true);
+  });
+});
diff --git a/test/unit/src/cli/symbols.test.js b/test/unit/src/cli/symbols.test.js
new file mode 100644
index 0000000..7ef92e8
--- /dev/null
+++ b/test/unit/src/cli/symbols.test.js
@@ -0,0 +1,27 @@
+'use strict';
+
+const expect = require('chai').expect;
+const proxyquire = require('proxyquire');
+
+describe('test/unit/src/cli/symbols.test.js', () => {
+  const loadSymbols = (isUnicodeSupported) =>
+    proxyquire.noCallThru().load('../../../../src/cli/symbols', {
+      './is-unicode-supported': () => isUnicodeSupported,
+    });
+
+  it('exports unicode symbols when unicode is supported', () => {
+    expect(loadSymbols(true)).to.deep.equal({
+      success: '✔',
+      error: '✖',
+      separator: '›',
+    });
+  });
+
+  it('exports fallback symbols when unicode is not supported', () => {
+    expect(loadSymbols(false)).to.deep.equal({
+      success: '√',
+      error: '×',
+      separator: '>',
+    });
+  });
+});
diff --git a/test/unit/src/utils/colors.test.js b/test/unit/src/utils/colors.test.js
index 8096414..688e048 100644
--- a/test/unit/src/utils/colors.test.js
+++ b/test/unit/src/utils/colors.test.js
@@ -27,6 +27,15 @@ describe('test/unit/src/utils/colors.test.js', () => {
     ).to.equal(0);
   });
 
+  it('disables colors for dumb terminals', () => {
+    expect(
+      getColorLevel({
+        stream: { isTTY: true, getColorDepth: () => 24 },
+        env: { TERM: 'dumb' },
+      })
+    ).to.equal(0);
+  });
+
   it('treats COLORTERM=truecolor case-insensitively', () => {
     expect(
       getColorLevel({
diff --git a/test/unit/src/utils/serverless-utils/log-reporters/node.test.js b/test/unit/src/utils/serverless-utils/log-reporters/node.test.js
index 2f68bf0..e219dbf 100644
--- a/test/unit/src/utils/serverless-utils/log-reporters/node.test.js
+++ b/test/unit/src/utils/serverless-utils/log-reporters/node.test.js
@@ -104,6 +104,76 @@ describe('test/unit/src/utils/serverless-utils/log-reporters/node.test.js', () =
     expect(uniGlobalState.logIsInteractive).to.equal('1');
   });
 
+  it('registers the progress reporter when stdin and stdout are TTY outside CI', () => {
+    const uniGlobalState = {};
+
+    const { progressReporter, result } = loadModule(uniGlobalState, {
+      stdin: { isTTY: true },
+      stdout: { isTTY: true, write: sinon.stub() },
+      env: {},
+    });
+
+    expect(progressReporter).to.have.been.calledOnceWithExactly({ logLevelIndex: 2 });
+    expect(uniGlobalState.logIsInteractive).to.equal(true);
+    expect(result).to.deep.equal({ logLevelIndex: 2, isInteractive: true });
+  });
+
+  it('matches Serverless by treating empty CI as interactive', () => {
+    const uniGlobalState = {};
+
+    const { progressReporter, result } = loadModule(uniGlobalState, {
+      stdin: { isTTY: true },
+      stdout: { isTTY: true, write: sinon.stub() },
+      env: { CI: '' },
+    });
+
+    expect(progressReporter).to.have.been.calledOnceWithExactly({ logLevelIndex: 2 });
+    expect(uniGlobalState.logIsInteractive).to.equal(true);
+    expect(result).to.deep.equal({ logLevelIndex: 2, isInteractive: true });
+  });
+
+  it('does not register the progress reporter when stdin is not TTY', () => {
+    const uniGlobalState = {};
+
+    const { progressReporter, result } = loadModule(uniGlobalState, {
+      stdin: { isTTY: false },
+      stdout: { isTTY: true, write: sinon.stub() },
+      env: {},
+    });
+
+    expect(progressReporter.called).to.equal(false);
+    expect(uniGlobalState.logIsInteractive).to.equal(undefined);
+    expect(result).to.deep.equal({ logLevelIndex: 2, isInteractive: undefined });
+  });
+
+  it('does not register the progress reporter when stdout is not TTY', () => {
+    const uniGlobalState = {};
+
+    const { progressReporter, result } = loadModule(uniGlobalState, {
+      stdin: { isTTY: true },
+      stdout: { isTTY: false, write: sinon.stub() },
+      env: {},
+    });
+
+    expect(progressReporter.called).to.equal(false);
+    expect(uniGlobalState.logIsInteractive).to.equal(undefined);
+    expect(result).to.deep.equal({ logLevelIndex: 2, isInteractive: undefined });
+  });
+
+  it('does not register the progress reporter when CI is truthy', () => {
+    const uniGlobalState = {};
+
+    const { progressReporter, result } = loadModule(uniGlobalState, {
+      stdin: { isTTY: true },
+      stdout: { isTTY: true, write: sinon.stub() },
+      env: { CI: '1' },
+    });
+
+    expect(progressReporter.called).to.equal(false);
+    expect(uniGlobalState.logIsInteractive).to.equal(undefined);
+    expect(result).to.deep.equal({ logLevelIndex: 2, isInteractive: undefined });
+  });
+
   it('writes text-mode output events through joinTextTokens', () => {
     const handlers = new Map();
     const outputEmitter = {