diff --git a/packages/vant-cli/package.json b/packages/vant-cli/package.json
index cc2062ef0..19b145ddf 100644
--- a/packages/vant-cli/package.json
+++ b/packages/vant-cli/package.json
@@ -82,8 +82,8 @@
     "jest": "^25.5.4",
     "jest-canvas-mock": "^2.2.0",
     "jest-serializer-vue": "^2.0.2",
-    "less": "^3.11.1",
-    "less-loader": "^6.1.0",
+    "less": "^4.0.0",
+    "less-loader": "^7.0.0",
     "lint-staged": "^10.2.7",
     "lodash": "^4.17.15",
     "ora": "^4.0.4",
diff --git a/packages/vant-cli/yarn.lock b/packages/vant-cli/yarn.lock
index ac463701f..91e06334d 100644
--- a/packages/vant-cli/yarn.lock
+++ b/packages/vant-cli/yarn.lock
@@ -1750,6 +1750,11 @@
   resolved "https://registry.yarnpkg.com/@types/json-schema/-/json-schema-7.0.4.tgz#38fd73ddfd9b55abb1e1b2ed578cb55bd7b7d339"
   integrity sha512-8+KAKzEvSUdeo+kmqnKrqgeE+LcA0tjYWFY7RPProVYwnqDjukzO+3b6dLD56rYX5TdWejnEOLJYOIeh4CXKuA==
 
+"@types/json-schema@^7.0.6":
+  version "7.0.6"
+  resolved "https://registry.npm.taobao.org/@types/json-schema/download/@types/json-schema-7.0.6.tgz#f4c7ec43e81b319a9815115031709f26987891f0"
+  integrity sha1-9MfsQ+gbMZqYFRFQMXCfJph4kfA=
+
 "@types/keyv@*":
   version "3.1.1"
   resolved "https://registry.yarnpkg.com/@types/keyv/-/keyv-3.1.1.tgz#e45a45324fca9dab716ab1230ee249c9fb52cfa7"
@@ -2358,6 +2363,11 @@ ajv-keywords@^3.1.0, ajv-keywords@^3.4.1:
   resolved "https://registry.yarnpkg.com/ajv-keywords/-/ajv-keywords-3.4.1.tgz#ef916e271c64ac12171fd8384eaae6b2345854da"
   integrity sha512-RO1ibKvd27e6FEShVFfPALuHI3WjSVNeK5FIsmme/LYRNxjKuNj+Dt7bucLa6NdSv3JcVTyMlm9kGR84z1XpaQ==
 
+ajv-keywords@^3.5.2:
+  version "3.5.2"
+  resolved "https://registry.npm.taobao.org/ajv-keywords/download/ajv-keywords-3.5.2.tgz?cache=0&sync_timestamp=1608062612017&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Fajv-keywords%2Fdownload%2Fajv-keywords-3.5.2.tgz#31f29da5ab6e00d1c2d329acf7b5929614d5014d"
+  integrity sha1-MfKdpatuANHC0yms97WSlhTVAU0=
+
 ajv@^6.1.0, ajv@^6.10.0, ajv@^6.10.2, ajv@^6.12.0, ajv@^6.5.5:
   version "6.12.0"
   resolved "https://registry.yarnpkg.com/ajv/-/ajv-6.12.0.tgz#06d60b96d87b8454a5adaba86e7854da629db4b7"
@@ -2368,6 +2378,16 @@ ajv@^6.1.0, ajv@^6.10.0, ajv@^6.10.2, ajv@^6.12.0, ajv@^6.5.5:
     json-schema-traverse "^0.4.1"
     uri-js "^4.2.2"
 
+ajv@^6.12.5:
+  version "6.12.6"
+  resolved "https://registry.npm.taobao.org/ajv/download/ajv-6.12.6.tgz?cache=0&sync_timestamp=1609583976611&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Fajv%2Fdownload%2Fajv-6.12.6.tgz#baf5a62e802b07d977034586f8c3baf5adf26df4"
+  integrity sha1-uvWmLoArB9l3A0WG+MO69a3ybfQ=
+  dependencies:
+    fast-deep-equal "^3.1.1"
+    fast-json-stable-stringify "^2.0.0"
+    json-schema-traverse "^0.4.1"
+    uri-js "^4.2.2"
+
 ansi-align@^3.0.0:
   version "3.0.0"
   resolved "https://registry.yarnpkg.com/ansi-align/-/ansi-align-3.0.0.tgz#b536b371cf687caaef236c18d3e21fe3797467cb"
@@ -2554,11 +2574,6 @@ arrify@^2.0.1:
   resolved "https://registry.npm.taobao.org/arrify/download/arrify-2.0.1.tgz#c9655e9331e0abcd588d2a7cad7e9956f66701fa"
   integrity sha1-yWVekzHgq81YjSp8rX6ZVvZnAfo=
 
-asap@~2.0.3:
-  version "2.0.6"
-  resolved "https://registry.yarnpkg.com/asap/-/asap-2.0.6.tgz#e50347611d7e690943208bbdafebcbc2fb866d46"
-  integrity sha1-5QNHYR1+aQlDIIu9r+vLwvuGbUY=
-
 asn1.js@^4.0.0:
   version "4.10.1"
   resolved "https://registry.yarnpkg.com/asn1.js/-/asn1.js-4.10.1.tgz#b9c2bf5805f1e64aadeed6df3a2bfafb5a73f5a0"
@@ -3516,11 +3531,6 @@ clone@^1.0.2:
   resolved "https://registry.yarnpkg.com/clone/-/clone-1.0.4.tgz#da309cc263df15994c688ca902179ca3c7cd7c7e"
   integrity sha1-2jCcwmPfFZlMaIypAheco8fNfH4=
 
-clone@^2.1.2:
-  version "2.1.2"
-  resolved "https://registry.yarnpkg.com/clone/-/clone-2.1.2.tgz#1b7f4b9f591f1e8f83670401600345a02887435f"
-  integrity sha1-G39Ln1kfHo+DZwQBYANFoCiHQ18=
-
 co@^4.6.0:
   version "4.6.0"
   resolved "https://registry.yarnpkg.com/co/-/co-4.6.0.tgz#6ea6bdf3d853ae54ccb8e47bfa0bf3f9031fb184"
@@ -3911,6 +3921,13 @@ cookie@0.4.0:
   resolved "https://registry.yarnpkg.com/cookie/-/cookie-0.4.0.tgz#beb437e7022b3b6d49019d088665303ebe9c14ba"
   integrity sha512-+Hp8fLp57wnUSt0tY0tHEXh4voZRDnoIrZPqlo3DPiI4y9lwg/jqx+1Om94/W6ZaPDOUbnjOt/99w66zk+l1Xg==
 
+copy-anything@^2.0.1:
+  version "2.0.1"
+  resolved "https://registry.npm.taobao.org/copy-anything/download/copy-anything-2.0.1.tgz#2afbce6da684bdfcbec93752fa762819cb480d9a"
+  integrity sha1-KvvObaaEvfy+yTdS+nYoGctIDZo=
+  dependencies:
+    is-what "^3.7.1"
+
 copy-concurrently@^1.0.0:
   version "1.0.5"
   resolved "https://registry.yarnpkg.com/copy-concurrently/-/copy-concurrently-1.0.5.tgz#92297398cae34937fcafd6ec8139c18051f0b5e0"
@@ -6717,6 +6734,11 @@ is-utf8@^0.2.0:
   resolved "https://registry.yarnpkg.com/is-utf8/-/is-utf8-0.2.1.tgz#4b0da1442104d1b336340e80797e865cf39f7d72"
   integrity sha1-Sw2hRCEE0bM2NA6AeX6GXPOffXI=
 
+is-what@^3.7.1:
+  version "3.12.0"
+  resolved "https://registry.npm.taobao.org/is-what/download/is-what-3.12.0.tgz?cache=0&sync_timestamp=1605079638099&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Fis-what%2Fdownload%2Fis-what-3.12.0.tgz#f4405ce4bd6dd420d3ced51a026fb90e03705e55"
+  integrity sha1-9EBc5L1t1CDTztUaAm+5DgNwXlU=
+
 is-whitespace-character@^1.0.0:
   version "1.0.4"
   resolved "https://registry.yarnpkg.com/is-whitespace-character/-/is-whitespace-character-1.0.4.tgz#0858edd94a95594c7c9dd0b5c174ec6e45ee4aa7"
@@ -7474,6 +7496,11 @@ kleur@^3.0.3:
   resolved "https://registry.yarnpkg.com/kleur/-/kleur-3.0.3.tgz#a79c9ecc86ee1ce3fa6206d1216c501f147fc07e"
   integrity sha512-eTIzlVOSUR+JxdDFepEYcBMtZ9Qqdef+rnzWdRZuMbOywu5tO2w2N7rqjoANZ5k9vywhL6Br1VRjUIgTQx4E8w==
 
+klona@^2.0.4:
+  version "2.0.4"
+  resolved "https://registry.npm.taobao.org/klona/download/klona-2.0.4.tgz#7bb1e3affb0cb8624547ef7e8f6708ea2e39dfc0"
+  integrity sha1-e7Hjr/sMuGJFR+9+j2cI6i4538A=
+
 known-css-properties@^0.11.0:
   version "0.11.0"
   resolved "https://registry.yarnpkg.com/known-css-properties/-/known-css-properties-0.11.0.tgz#0da784f115ea77c76b81536d7052e90ee6c86a8a"
@@ -7491,31 +7518,30 @@ latest-version@^5.0.0:
   dependencies:
     package-json "^6.3.0"
 
-less-loader@^6.1.0:
-  version "6.1.0"
-  resolved "https://registry.npm.taobao.org/less-loader/download/less-loader-6.1.0.tgz?cache=0&sync_timestamp=1588856211579&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Fless-loader%2Fdownload%2Fless-loader-6.1.0.tgz#59fd591df408ced89a40fce11a2aea449b005631"
-  integrity sha1-Wf1ZHfQIztiaQPzhGirqRJsAVjE=
+less-loader@^7.0.0:
+  version "7.2.1"
+  resolved "https://registry.npm.taobao.org/less-loader/download/less-loader-7.2.1.tgz?cache=0&sync_timestamp=1609160555534&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Fless-loader%2Fdownload%2Fless-loader-7.2.1.tgz#a923df8567256751b0ab4e0c3eecff10fd0a5876"
+  integrity sha1-qSPfhWclZ1Gwq04MPuz/EP0KWHY=
   dependencies:
-    clone "^2.1.2"
-    less "^3.11.1"
+    klona "^2.0.4"
     loader-utils "^2.0.0"
-    schema-utils "^2.6.6"
+    schema-utils "^3.0.0"
 
-less@^3.11.1:
-  version "3.11.1"
-  resolved "https://registry.yarnpkg.com/less/-/less-3.11.1.tgz#c6bf08e39e02404fe6b307a3dfffafdc55bd36e2"
-  integrity sha512-tlWX341RECuTOvoDIvtFqXsKj072hm3+9ymRBe76/mD6O5ZZecnlAOVDlWAleF2+aohFrxNidXhv2773f6kY7g==
+less@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.npm.taobao.org/less/download/less-4.0.0.tgz#d238cc25576c1f722794dbca4ac82e5e3c7e9e65"
+  integrity sha1-0jjMJVdsH3InlNvKSsguXjx+nmU=
   dependencies:
-    clone "^2.1.2"
+    copy-anything "^2.0.1"
+    parse-node-version "^1.0.1"
     tslib "^1.10.0"
   optionalDependencies:
     errno "^0.1.1"
     graceful-fs "^4.1.2"
     image-size "~0.5.0"
+    make-dir "^2.1.0"
     mime "^1.4.1"
-    mkdirp "^0.5.0"
-    promise "^7.1.1"
-    request "^2.83.0"
+    native-request "^1.0.5"
     source-map "~0.6.0"
 
 leven@^2.1.0:
@@ -7827,7 +7853,7 @@ macos-release@^2.2.0:
   resolved "https://registry.yarnpkg.com/macos-release/-/macos-release-2.3.0.tgz#eb1930b036c0800adebccd5f17bc4c12de8bb71f"
   integrity sha512-OHhSbtcviqMPt7yfw5ef5aghS2jzFVKEFyCJndQt2YpSQ9qRVSEv2axSJI1paVThEu+FFGs584h/1YhxjVqajA==
 
-make-dir@^2.0.0:
+make-dir@^2.0.0, make-dir@^2.1.0:
   version "2.1.0"
   resolved "https://registry.yarnpkg.com/make-dir/-/make-dir-2.1.0.tgz#5f0310e18b8be898cc07009295a30ae41e91e6f5"
   integrity sha512-LS9X+dc8KLxXCb8dni79fLIIUA5VyZoyjSMCwTluaXA0o27cCK0bhXkpgw+sTXVpPy/lSO57ilRixqk0vDmtRA==
@@ -8210,7 +8236,7 @@ mkdirp@1.x:
   resolved "https://registry.npm.taobao.org/mkdirp/download/mkdirp-1.0.4.tgz#3eb5ed62622756d79a5f0e2a221dfebad75c2f7e"
   integrity sha1-PrXtYmInVteaXw4qIh3+utdcL34=
 
-mkdirp@^0.5.0, mkdirp@^0.5.1, mkdirp@^0.5.3, mkdirp@~0.5.1:
+mkdirp@^0.5.1, mkdirp@^0.5.3, mkdirp@~0.5.1:
   version "0.5.4"
   resolved "https://registry.npm.taobao.org/mkdirp/download/mkdirp-0.5.4.tgz#fd01504a6797ec5c9be81ff43d204961ed64a512"
   integrity sha1-/QFQSmeX7Fyb6B/0PSBJYe1kpRI=
@@ -8289,6 +8315,11 @@ nanomatch@^1.2.9:
     snapdragon "^0.8.1"
     to-regex "^3.0.1"
 
+native-request@^1.0.5:
+  version "1.0.8"
+  resolved "https://registry.npm.taobao.org/native-request/download/native-request-1.0.8.tgz?cache=0&sync_timestamp=1603412804149&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Fnative-request%2Fdownload%2Fnative-request-1.0.8.tgz#8f66bf606e0f7ea27c0e5995eb2f5d03e33ae6fb"
+  integrity sha1-j2a/YG4PfqJ8DlmV6y9dA+M65vs=
+
 natural-compare@^1.4.0:
   version "1.4.0"
   resolved "https://registry.yarnpkg.com/natural-compare/-/natural-compare-1.4.0.tgz#4abebfeed7541f2c27acfb29bdbbd15c8d5ba4f7"
@@ -8879,6 +8910,11 @@ parse-json@^4.0.0:
     error-ex "^1.3.1"
     json-parse-better-errors "^1.0.1"
 
+parse-node-version@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.npm.taobao.org/parse-node-version/download/parse-node-version-1.0.1.tgz#e2b5dbede00e7fa9bc363607f53327e8b073189b"
+  integrity sha1-4rXb7eAOf6m8NjYH9TMn6LBzGJs=
+
 parse-path@^4.0.0:
   version "4.0.1"
   resolved "https://registry.yarnpkg.com/parse-path/-/parse-path-4.0.1.tgz#0ec769704949778cb3b8eda5e994c32073a1adff"
@@ -9398,13 +9434,6 @@ promise-inflight@^1.0.1:
   resolved "https://registry.yarnpkg.com/promise-inflight/-/promise-inflight-1.0.1.tgz#98472870bf228132fcbdd868129bad12c3c029e3"
   integrity sha1-mEcocL8igTL8vdhoEputEsPAKeM=
 
-promise@^7.1.1:
-  version "7.3.1"
-  resolved "https://registry.yarnpkg.com/promise/-/promise-7.3.1.tgz#064b72602b18f90f29192b8b1bc418ffd1ebd3bf"
-  integrity sha512-nolQXZ/4L+bP/UGlkfaIujX9BKxGwmQ9OT4mOt5yvy8iK1h3wqTEJCijzGANTCCl9nWjY41juyAn2K3Q1hLLTg==
-  dependencies:
-    asap "~2.0.3"
-
 prompts@^2.0.1:
   version "2.3.1"
   resolved "https://registry.yarnpkg.com/prompts/-/prompts-2.3.1.tgz#b63a9ce2809f106fa9ae1277c275b167af46ea05"
@@ -10033,7 +10062,7 @@ request-promise-native@^1.0.7:
     stealthy-require "^1.1.1"
     tough-cookie "^2.3.3"
 
-request@^2.83.0, request@^2.88.0:
+request@^2.88.0:
   version "2.88.2"
   resolved "https://registry.yarnpkg.com/request/-/request-2.88.2.tgz#d73c918731cb5a87da047e207234146f664d12b3"
   integrity sha512-MsvtOrfG9ZcrOwAW+Qi+F6HbD0CWXEh9ou77uOb7FM2WPhwT7smM833PzanhJLsgXjN89Ir6V2PczXNnMpwKhw==
@@ -10308,6 +10337,15 @@ schema-utils@^2.0.0, schema-utils@^2.6.1, schema-utils@^2.6.5, schema-utils@^2.6
     ajv "^6.12.0"
     ajv-keywords "^3.4.1"
 
+schema-utils@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.npm.taobao.org/schema-utils/download/schema-utils-3.0.0.tgz?cache=0&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Fschema-utils%2Fdownload%2Fschema-utils-3.0.0.tgz#67502f6aa2b66a2d4032b4279a2944978a0913ef"
+  integrity sha1-Z1AvaqK2ai1AMrQnmilEl4oJE+8=
+  dependencies:
+    "@types/json-schema" "^7.0.6"
+    ajv "^6.12.5"
+    ajv-keywords "^3.5.2"
+
 select-hose@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/select-hose/-/select-hose-2.0.0.tgz#625d8658f865af43ec962bfc376a37359a4994ca"