diff --git a/package.json b/package.json
index 3193dc9..c1eecc7 100644
--- a/package.json
+++ b/package.json
@@ -16,7 +16,6 @@
     "string-width": "^4.2.0"
   },
   "devDependencies": {
-    "ansi-256-colors": "^1.1.0",
     "cli-table": "^0.3.1",
     "eslint": "^6.0.0",
     "eslint-config-prettier": "^6.0.0",
diff --git a/yarn.lock b/yarn.lock
index 34992d7..fbdced1 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -629,11 +629,6 @@ ajv@^6.10.0, ajv@^6.10.2, ajv@^6.5.5:
     json-schema-traverse "^0.4.1"
     uri-js "^4.2.2"
 
-ansi-256-colors@^1.1.0:
-  version "1.1.0"
-  resolved "https://registry.npmjs.org/ansi-256-colors/-/ansi-256-colors-1.1.0.tgz"
-  integrity sha1-kQ3lDvzHwJ49gvL4er1rcAwYgYo=
-
 ansi-escapes@^4.2.1:
   version "4.3.1"
   resolved "https://registry.npmjs.org/ansi-escapes/-/ansi-escapes-4.3.1.tgz"