diff --git a/.changeset/soft-moons-lay.md b/.changeset/soft-moons-lay.md
new file mode 100644
index 00000000..77441844
--- /dev/null
+++ b/.changeset/soft-moons-lay.md
@@ -0,0 +1,5 @@
+---
+"@unts/patch-package": patch
+---
+
+chore: migrate `chalk` to `picocolors` and `NO_COLOR` env
diff --git a/package.json b/package.json
index a9254561..a1ff299e 100644
--- a/package.json
+++ b/package.json
@@ -81,7 +81,6 @@
   "dependencies": {
     "@nolyfill/json-stable-stringify": "^1.0.30",
     "@yarnpkg/lockfile": "^1.1.0",
-    "chalk": "^4.1.2",
     "ci-info": "^3.7.0",
     "cross-spawn": "^7.0.3",
     "find-yarn-workspace-root": "^2.0.0",
@@ -89,6 +88,7 @@
     "klaw-sync": "^6.0.0",
     "minimist": "^1.2.6",
     "open": "^7.4.2",
+    "picocolors": "^1.1.1",
     "semver": "^7.5.3",
     "slash": "^3.0.0",
     "tmp": "^0.0.33",
diff --git a/run-tests.sh b/run-tests.sh
index 894d5268..c1645703 100755
--- a/run-tests.sh
+++ b/run-tests.sh
@@ -1,12 +1,10 @@
 #!/usr/bin/env bash
 set -e
 
-export CI=true
-
 yarn clean
 yarn build
 version=$(node -e 'console.log(require("./package.json").version)')
 yarn version --new-version 0.0.0 --no-git-tag-version --no-commit-hooks
 yarn pack --filename patch-package.test.$(date +%s).tgz
 yarn version --new-version $version --no-git-tag-version --no-commit-hooks
-yarn jest "$@"
+NO_COLOR=1 yarn jest "$@"
diff --git a/src/applyPatches.ts b/src/applyPatches.ts
index 8e1f7bb9..2da417e7 100644
--- a/src/applyPatches.ts
+++ b/src/applyPatches.ts
@@ -1,6 +1,6 @@
-import colors from "chalk"
 import { existsSync, writeFileSync } from "fs-extra"
 import { posix } from "path"
+import colors from "picocolors"
 import semver from "semver"
 import { hashFile } from "./hash"
 import { logPatchSequenceError } from "./makePatch"
diff --git a/src/createIssue.ts b/src/createIssue.ts
index 7d1015d9..75d3d67f 100644
--- a/src/createIssue.ts
+++ b/src/createIssue.ts
@@ -1,5 +1,5 @@
-import colors from "chalk"
 import open from "open"
+import colors from "picocolors"
 import { stringify } from "querystring"
 import { PackageManager } from "./detectPackageManager"
 import { PackageDetails } from "./PackageDetails"
diff --git a/src/detectPackageManager.ts b/src/detectPackageManager.ts
index 0b7a6c80..efe1359c 100644
--- a/src/detectPackageManager.ts
+++ b/src/detectPackageManager.ts
@@ -1,6 +1,6 @@
-import colors from "chalk"
 import findWorkspaceRoot from "find-yarn-workspace-root"
 import fs from "fs-extra"
+import colors from "picocolors"
 import { join } from "./path"
 
 export type PackageManager = "yarn" | "npm" | "npm-shrinkwrap"
diff --git a/src/index.ts b/src/index.ts
index 028870ff..6e51d976 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -1,7 +1,7 @@
-import colors from "chalk"
 import { isCI } from "ci-info"
 import minimist from "minimist"
 import { normalize, sep } from "path"
+import colors from "picocolors"
 import slash from "slash"
 import { applyPatchesForApp } from "./applyPatches"
 import { detectPackageManager } from "./detectPackageManager"
diff --git a/src/makePatch.ts b/src/makePatch.ts
index 659d1929..7629840a 100644
--- a/src/makePatch.ts
+++ b/src/makePatch.ts
@@ -1,4 +1,3 @@
-import colors from "chalk"
 import {
   copySync,
   existsSync,
@@ -9,6 +8,7 @@ import {
   renameSync,
   writeFileSync,
 } from "fs-extra"
+import colors from "picocolors"
 import { dirSync } from "tmp"
 import { gzipSync } from "zlib"
 import { applyPatch } from "./applyPatches"
diff --git a/src/makeRegExp.ts b/src/makeRegExp.ts
index 85e79e77..dcbb0f4b 100644
--- a/src/makeRegExp.ts
+++ b/src/makeRegExp.ts
@@ -1,4 +1,4 @@
-import colors from "chalk"
+import colors from "picocolors"
 
 export const makeRegExp = (
   reString: string,
diff --git a/src/patch/read.ts b/src/patch/read.ts
index afad154f..d24e6bb2 100644
--- a/src/patch/read.ts
+++ b/src/patch/read.ts
@@ -1,6 +1,6 @@
-import colors from "chalk"
 import { readFileSync } from "fs-extra"
 import { normalize } from "path"
+import colors from "picocolors"
 import { PackageDetails } from "../PackageDetails"
 import { relative, resolve } from "../path"
 import { parsePatchFile, PatchFilePart } from "./parse"
diff --git a/src/rebase.ts b/src/rebase.ts
index 6fce8985..e32814ce 100644
--- a/src/rebase.ts
+++ b/src/rebase.ts
@@ -1,5 +1,5 @@
-import colors from "chalk"
 import { join, resolve } from "path"
+import colors from "picocolors"
 import { applyPatch } from "./applyPatches"
 import { hashFile } from "./hash"
 import { PatchedPackageDetails } from "./PackageDetails"
diff --git a/src/stateFile.ts b/src/stateFile.ts
index c5b58313..0984c5ed 100644
--- a/src/stateFile.ts
+++ b/src/stateFile.ts
@@ -1,7 +1,7 @@
 import stringify from "@nolyfill/json-stable-stringify"
-import colors from "chalk"
 import { existsSync, readFileSync, unlinkSync, writeFileSync } from "fs"
 import { join } from "path"
+import colors from "picocolors"
 import { hashFile } from "./hash"
 import { PackageDetails } from "./PackageDetails"
 export interface PatchState {
diff --git a/yarn.lock b/yarn.lock
index 795440f8..c78bb4b7 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -5224,10 +5224,10 @@ performance-now@^2.1.0:
   resolved "https://registry.yarnpkg.com/performance-now/-/performance-now-2.1.0.tgz#6309f4e0e5fa913ec1c69307ae364b4b377c9e7b"
   integrity sha512-7EAHlyLHI56VEIdK57uwHdHKIaAGbnXPiw0yWbarQZOKaKpvUIgW0jWRVLiatnM+XXlSwsanIBH/hzGMJulMow==
 
-picocolors@^1.0.0:
-  version "1.0.0"
-  resolved "https://registry.yarnpkg.com/picocolors/-/picocolors-1.0.0.tgz#cb5bdc74ff3f51892236eaf79d68bc44564ab81c"
-  integrity sha512-1fygroTLlHu66zi26VoTDv8yRgm0Fccecssto+MhsZ0D/DGW2sm8E8AjW7NU5VVTRt5GxbeZ5qBuJr+HyLYkjQ==
+picocolors@^1.0.0, picocolors@^1.1.1:
+  version "1.1.1"
+  resolved "https://registry.yarnpkg.com/picocolors/-/picocolors-1.1.1.tgz#3d321af3eab939b083c8f929a1d12cda81c26b6b"
+  integrity sha512-xceH2snhtb5M9liqDsmEw56le376mTZkEX/jEb/RxNFyegNul7eNslCXP9FDj/Lcu0X8KEyMceP2ntpaHrDEVA==
 
 picomatch@^2.3.1:
   version "2.3.1"