diff --git a/contracts/asset-proxy/package.json b/contracts/asset-proxy/package.json
index 2dce4e7364..e42ca169c5 100644
--- a/contracts/asset-proxy/package.json
+++ b/contracts/asset-proxy/package.json
@@ -55,6 +55,7 @@
         "@0x/tslint-config": "^3.0.1",
         "@types/lodash": "4.14.104",
         "@types/node": "*",
+        "@types/mocha": "^5.2.7",
         "chai": "^4.0.1",
         "chai-as-promised": "^7.1.0",
         "chai-bignumber": "^3.0.0",
diff --git a/contracts/coordinator/package.json b/contracts/coordinator/package.json
index 246ceb0b7f..d1fcf61fd7 100644
--- a/contracts/coordinator/package.json
+++ b/contracts/coordinator/package.json
@@ -55,6 +55,7 @@
         "@0x/tslint-config": "^3.0.1",
         "@types/lodash": "4.14.104",
         "@types/node": "*",
+        "@types/mocha": "^5.2.7",
         "chai": "^4.0.1",
         "chai-as-promised": "^7.1.0",
         "chai-bignumber": "^3.0.0",
diff --git a/contracts/dev-utils/package.json b/contracts/dev-utils/package.json
index 7e1a3b4dce..e203775808 100644
--- a/contracts/dev-utils/package.json
+++ b/contracts/dev-utils/package.json
@@ -56,6 +56,7 @@
         "@0x/tslint-config": "^3.0.1",
         "@types/lodash": "4.14.104",
         "@types/node": "*",
+        "@types/mocha": "^5.2.7",
         "chai": "^4.0.1",
         "chai-as-promised": "^7.1.0",
         "chai-bignumber": "^3.0.0",
diff --git a/contracts/erc1155/package.json b/contracts/erc1155/package.json
index f3306cf31e..409ff7e302 100644
--- a/contracts/erc1155/package.json
+++ b/contracts/erc1155/package.json
@@ -54,6 +54,7 @@
         "@0x/tslint-config": "^3.0.1",
         "@types/lodash": "4.14.104",
         "@types/node": "*",
+        "@types/mocha": "^5.2.7",
         "chai": "^4.0.1",
         "chai-as-promised": "^7.1.0",
         "chai-bignumber": "^3.0.0",
diff --git a/contracts/erc20/package.json b/contracts/erc20/package.json
index d393a45e03..071e2f62c2 100644
--- a/contracts/erc20/package.json
+++ b/contracts/erc20/package.json
@@ -55,6 +55,7 @@
         "@0x/tslint-config": "^3.0.1",
         "@types/lodash": "4.14.104",
         "@types/node": "*",
+        "@types/mocha": "^5.2.7",
         "chai": "^4.0.1",
         "chai-as-promised": "^7.1.0",
         "chai-bignumber": "^3.0.0",
diff --git a/contracts/erc721/package.json b/contracts/erc721/package.json
index 006dd30c3e..80dd14df24 100644
--- a/contracts/erc721/package.json
+++ b/contracts/erc721/package.json
@@ -55,6 +55,7 @@
         "@0x/tslint-config": "^3.0.1",
         "@types/lodash": "4.14.104",
         "@types/node": "*",
+        "@types/mocha": "^5.2.7",
         "chai": "^4.0.1",
         "chai-as-promised": "^7.1.0",
         "chai-bignumber": "^3.0.0",
diff --git a/contracts/exchange-forwarder/package.json b/contracts/exchange-forwarder/package.json
index ccfc58dda3..db261a62fc 100644
--- a/contracts/exchange-forwarder/package.json
+++ b/contracts/exchange-forwarder/package.json
@@ -55,6 +55,7 @@
         "@0x/tslint-config": "^3.0.1",
         "@types/lodash": "4.14.104",
         "@types/node": "*",
+        "@types/mocha": "^5.2.7",
         "chai": "^4.0.1",
         "chai-as-promised": "^7.1.0",
         "chai-bignumber": "^3.0.0",
diff --git a/contracts/exchange-libs/package.json b/contracts/exchange-libs/package.json
index 3f9349c823..aaab9ddb32 100644
--- a/contracts/exchange-libs/package.json
+++ b/contracts/exchange-libs/package.json
@@ -55,6 +55,7 @@
         "@0x/tslint-config": "^3.0.1",
         "@types/lodash": "4.14.104",
         "@types/node": "*",
+        "@types/mocha": "^5.2.7",
         "chai": "^4.0.1",
         "chai-as-promised": "^7.1.0",
         "chai-bignumber": "^3.0.0",
diff --git a/contracts/exchange/package.json b/contracts/exchange/package.json
index ba300f9760..c064e8e0b8 100644
--- a/contracts/exchange/package.json
+++ b/contracts/exchange/package.json
@@ -55,6 +55,7 @@
         "@0x/tslint-config": "^3.0.1",
         "@types/lodash": "4.14.104",
         "@types/node": "*",
+        "@types/mocha": "^5.2.7",
         "chai": "^4.0.1",
         "chai-as-promised": "^7.1.0",
         "chai-bignumber": "^3.0.0",
diff --git a/contracts/extensions/package.json b/contracts/extensions/package.json
index e4e7d6cd33..22a03f547f 100644
--- a/contracts/extensions/package.json
+++ b/contracts/extensions/package.json
@@ -56,6 +56,7 @@
         "@0x/tslint-config": "^3.0.1",
         "@types/lodash": "4.14.104",
         "@types/node": "*",
+        "@types/mocha": "^5.2.7",
         "chai": "^4.0.1",
         "chai-as-promised": "^7.1.0",
         "chai-bignumber": "^3.0.0",
diff --git a/contracts/multisig/package.json b/contracts/multisig/package.json
index 8dc46932dc..7dad00796b 100644
--- a/contracts/multisig/package.json
+++ b/contracts/multisig/package.json
@@ -55,6 +55,7 @@
         "@0x/tslint-config": "^3.0.1",
         "@types/lodash": "4.14.104",
         "@types/node": "*",
+        "@types/mocha": "^5.2.7",
         "chai": "^4.0.1",
         "chai-as-promised": "^7.1.0",
         "chai-bignumber": "^3.0.0",
diff --git a/contracts/test-utils/package.json b/contracts/test-utils/package.json
index 2117082f46..51e0c6d05b 100644
--- a/contracts/test-utils/package.json
+++ b/contracts/test-utils/package.json
@@ -34,6 +34,7 @@
     },
     "homepage": "https://github.com/0xProject/0x-monorepo/contracts/test-utils/README.md",
     "devDependencies": {
+        "@types/mocha": "^5.2.7",
         "mocha": "^6.2.0",
         "npm-run-all": "^4.1.2",
         "shx": "^0.2.2",
diff --git a/contracts/utils/package.json b/contracts/utils/package.json
index 70d4cc1523..331a0c14e9 100644
--- a/contracts/utils/package.json
+++ b/contracts/utils/package.json
@@ -56,6 +56,7 @@
         "@types/bn.js": "^4.11.0",
         "@types/lodash": "4.14.104",
         "@types/node": "*",
+        "@types/mocha": "^5.2.7",
         "chai": "^4.0.1",
         "chai-as-promised": "^7.1.0",
         "chai-bignumber": "^3.0.0",
diff --git a/packages/0x.js/package.json b/packages/0x.js/package.json
index 17f4bec0a0..6edfc4400d 100644
--- a/packages/0x.js/package.json
+++ b/packages/0x.js/package.json
@@ -49,7 +49,7 @@
         "@0x/migrations": "^4.1.10",
         "@0x/tslint-config": "^3.0.1",
         "@types/lodash": "4.14.104",
-        "@types/mocha": "^2.2.42",
+        "@types/mocha": "^5.2.7",
         "@types/node": "*",
         "@types/sinon": "^2.2.2",
         "awesome-typescript-loader": "^5.2.1",
@@ -59,7 +59,7 @@
         "copyfiles": "^2.0.0",
         "dirty-chai": "^2.0.1",
         "make-promises-safe": "^1.1.0",
-        "mocha": "^4.1.0",
+        "mocha": "^6.2.0",
         "npm-run-all": "^4.1.2",
         "nyc": "^11.0.1",
         "opn-cli": "^3.1.0",
diff --git a/packages/abi-gen/package.json b/packages/abi-gen/package.json
index f28b96769b..3bceb6eeb9 100644
--- a/packages/abi-gen/package.json
+++ b/packages/abi-gen/package.json
@@ -84,6 +84,7 @@
         "@types/node": "*",
         "@types/tmp": "^0.0.33",
         "@types/yargs": "^11.0.0",
+        "@types/mocha": "^5.2.7",
         "chai": "^4.0.1",
         "chai-as-promised": "^7.1.0",
         "chai-bignumber": "^3.0.0",
diff --git a/packages/assert/package.json b/packages/assert/package.json
index 1caa6887b0..7135f64802 100644
--- a/packages/assert/package.json
+++ b/packages/assert/package.json
@@ -32,7 +32,7 @@
     "devDependencies": {
         "@0x/tslint-config": "^3.0.1",
         "@types/lodash": "4.14.104",
-        "@types/mocha": "^2.2.42",
+        "@types/mocha": "^5.2.7",
         "@types/valid-url": "^1.0.2",
         "chai": "^4.0.1",
         "dirty-chai": "^2.0.1",
diff --git a/packages/asset-buyer/package.json b/packages/asset-buyer/package.json
index 6be38725d5..d1e0629237 100644
--- a/packages/asset-buyer/package.json
+++ b/packages/asset-buyer/package.json
@@ -53,7 +53,7 @@
     "devDependencies": {
         "@0x/tslint-config": "^3.0.1",
         "@types/lodash": "4.14.104",
-        "@types/mocha": "^2.2.42",
+        "@types/mocha": "^5.2.7",
         "@types/node": "*",
         "chai": "^4.0.1",
         "chai-as-promised": "^7.1.0",
diff --git a/packages/asset-swapper/package.json b/packages/asset-swapper/package.json
index c8f532e35a..3ec963c4e9 100644
--- a/packages/asset-swapper/package.json
+++ b/packages/asset-swapper/package.json
@@ -57,7 +57,7 @@
     "devDependencies": {
         "@0x/tslint-config": "^3.0.1",
         "@types/lodash": "4.14.104",
-        "@types/mocha": "^2.2.42",
+        "@types/mocha": "^5.2.7",
         "@types/node": "*",
         "chai": "^4.0.1",
         "chai-as-promised": "^7.1.0",
diff --git a/packages/base-contract/package.json b/packages/base-contract/package.json
index 44686af856..4b1c223c6c 100644
--- a/packages/base-contract/package.json
+++ b/packages/base-contract/package.json
@@ -32,6 +32,7 @@
     "devDependencies": {
         "@0x/tslint-config": "^3.0.1",
         "@types/lodash": "4.14.104",
+        "@types/mocha": "^5.2.7",
         "chai": "^4.0.1",
         "make-promises-safe": "^1.1.0",
         "mocha": "^6.2.0",
diff --git a/packages/connect/package.json b/packages/connect/package.json
index dd2f823cbb..8d83bf7ff8 100644
--- a/packages/connect/package.json
+++ b/packages/connect/package.json
@@ -61,7 +61,7 @@
         "@0x/tslint-config": "^3.0.1",
         "@types/fetch-mock": "^6.0.3",
         "@types/lodash": "4.14.104",
-        "@types/mocha": "^2.2.42",
+        "@types/mocha": "^5.2.7",
         "@types/query-string": "^5.1.0",
         "@types/sinon": "^2.2.2",
         "@types/uuid": "^3.4.3",
diff --git a/packages/contract-artifacts/package.json b/packages/contract-artifacts/package.json
index ccba30792e..200c836727 100644
--- a/packages/contract-artifacts/package.json
+++ b/packages/contract-artifacts/package.json
@@ -31,6 +31,7 @@
     "homepage": "https://github.com/0xProject/0x-monorepo/packages/contract-artifacts/README.md",
     "devDependencies": {
         "@0x/utils": "^4.4.1",
+        "@types/mocha": "^5.2.7",
         "chai": "^4.0.1",
         "lodash": "^4.17.11",
         "mocha": "^6.2.0",
diff --git a/packages/contract-wrappers/package.json b/packages/contract-wrappers/package.json
index eac6e1ae70..d84bbe92eb 100644
--- a/packages/contract-wrappers/package.json
+++ b/packages/contract-wrappers/package.json
@@ -46,7 +46,7 @@
         "@0x/subproviders": "^4.1.2",
         "@0x/tslint-config": "^3.0.1",
         "@types/lodash": "4.14.104",
-        "@types/mocha": "^2.2.42",
+        "@types/mocha": "^5.2.7",
         "@types/nock": "^10.0.1",
         "@types/node": "*",
         "@types/sinon": "^2.2.2",
diff --git a/packages/dev-utils/package.json b/packages/dev-utils/package.json
index 5377dc0987..36cab54e11 100644
--- a/packages/dev-utils/package.json
+++ b/packages/dev-utils/package.json
@@ -32,7 +32,7 @@
     "devDependencies": {
         "@0x/tslint-config": "^3.0.1",
         "@types/lodash": "4.14.104",
-        "@types/mocha": "^2.2.42",
+        "@types/mocha": "^5.2.7",
         "make-promises-safe": "^1.1.0",
         "mocha": "^6.2.0",
         "npm-run-all": "^4.1.2",
diff --git a/packages/json-schemas/package.json b/packages/json-schemas/package.json
index eb154a3275..d1b645f750 100644
--- a/packages/json-schemas/package.json
+++ b/packages/json-schemas/package.json
@@ -50,7 +50,7 @@
         "@0x/utils": "^4.4.1",
         "@types/lodash.foreach": "^4.5.3",
         "@types/lodash.values": "^4.3.3",
-        "@types/mocha": "^2.2.42",
+        "@types/mocha": "^5.2.7",
         "chai": "^4.0.1",
         "dirty-chai": "^2.0.1",
         "lodash.foreach": "^4.5.0",
diff --git a/packages/order-utils/package.json b/packages/order-utils/package.json
index 3c952cc0a5..1583627b6b 100644
--- a/packages/order-utils/package.json
+++ b/packages/order-utils/package.json
@@ -41,6 +41,7 @@
         "@types/bn.js": "^4.11.0",
         "@types/lodash": "4.14.104",
         "@types/web3-provider-engine": "^14.0.0",
+        "@types/mocha": "^5.2.7",
         "chai": "^4.0.1",
         "chai-as-promised": "^7.1.0",
         "chai-bignumber": "^3.0.0",
diff --git a/packages/order-watcher/package.json b/packages/order-watcher/package.json
index 1d9a8ffb4b..b1901b41d6 100644
--- a/packages/order-watcher/package.json
+++ b/packages/order-watcher/package.json
@@ -40,7 +40,7 @@
         "@0x/tslint-config": "^3.0.1",
         "@types/bintrees": "^1.0.2",
         "@types/lodash": "4.14.104",
-        "@types/mocha": "^2.2.42",
+        "@types/mocha": "^5.2.7",
         "@types/node": "*",
         "@types/sinon": "^2.2.2",
         "chai": "^4.0.1",
diff --git a/packages/sol-compiler/package.json b/packages/sol-compiler/package.json
index 563de97bed..5eb81e9f80 100644
--- a/packages/sol-compiler/package.json
+++ b/packages/sol-compiler/package.json
@@ -50,6 +50,7 @@
         "@types/require-from-string": "^1.2.0",
         "@types/semver": "5.5.0",
         "@types/web3-provider-engine": "^14.0.0",
+        "@types/mocha": "^5.2.7",
         "chai": "^4.0.1",
         "chai-as-promised": "^7.1.0",
         "chai-bignumber": "^3.0.0",
diff --git a/packages/sol-doc/package.json b/packages/sol-doc/package.json
index 3ca41b0508..e669391559 100644
--- a/packages/sol-doc/package.json
+++ b/packages/sol-doc/package.json
@@ -36,6 +36,7 @@
     },
     "devDependencies": {
         "@0x/tslint-config": "^3.0.1",
+        "@types/mocha": "^5.2.7",
         "chai": "^4.0.1",
         "chai-as-promised": "^7.1.0",
         "chai-bignumber": "^3.0.0",
diff --git a/packages/sol-tracing-utils/package.json b/packages/sol-tracing-utils/package.json
index 4779952fb1..ac4497d94f 100644
--- a/packages/sol-tracing-utils/package.json
+++ b/packages/sol-tracing-utils/package.json
@@ -70,7 +70,7 @@
         "@types/istanbul": "^0.4.30",
         "@types/loglevel": "^1.5.3",
         "@types/mkdirp": "^0.5.2",
-        "@types/mocha": "^2.2.42",
+        "@types/mocha": "^5.2.7",
         "@types/node": "*",
         "@types/rimraf": "^2.0.2",
         "chai": "^4.0.1",
diff --git a/packages/sra-spec/package.json b/packages/sra-spec/package.json
index 1a7387e637..86231bf050 100644
--- a/packages/sra-spec/package.json
+++ b/packages/sra-spec/package.json
@@ -41,7 +41,7 @@
     },
     "devDependencies": {
         "@0x/tslint-config": "^3.0.1",
-        "@types/mocha": "^2.2.42",
+        "@types/mocha": "^5.2.7",
         "@types/node": "*",
         "chai": "^4.0.1",
         "chokidar-cli": "^1.2.0",
diff --git a/packages/subproviders/package.json b/packages/subproviders/package.json
index 0e5478e216..eceb633c62 100644
--- a/packages/subproviders/package.json
+++ b/packages/subproviders/package.json
@@ -60,7 +60,7 @@
         "@types/ethereumjs-tx": "^1.0.0",
         "@types/hdkey": "^0.7.0",
         "@types/lodash": "4.14.104",
-        "@types/mocha": "^2.2.42",
+        "@types/mocha": "^5.2.7",
         "@types/node": "*",
         "@types/sinon": "^2.2.2",
         "chai": "^4.0.1",
diff --git a/packages/utils/package.json b/packages/utils/package.json
index 4c36254508..c0f15a55c8 100644
--- a/packages/utils/package.json
+++ b/packages/utils/package.json
@@ -32,7 +32,7 @@
         "@0x/tslint-config": "^3.0.1",
         "@types/detect-node": "2.0.0",
         "@types/lodash": "4.14.104",
-        "@types/mocha": "^2.2.42",
+        "@types/mocha": "^5.2.7",
         "chai": "^4.0.1",
         "chai-as-promised": "^7.1.0",
         "chai-bignumber": "^3.0.0",
diff --git a/packages/web3-wrapper/package.json b/packages/web3-wrapper/package.json
index be10cb1435..b2e80003bb 100644
--- a/packages/web3-wrapper/package.json
+++ b/packages/web3-wrapper/package.json
@@ -39,6 +39,7 @@
     "devDependencies": {
         "@0x/tslint-config": "^3.0.1",
         "@types/lodash": "4.14.104",
+        "@types/mocha": "^5.2.7",
         "chai": "^4.0.1",
         "chai-as-promised": "^7.1.0",
         "chai-bignumber": "^3.0.0",
diff --git a/yarn.lock b/yarn.lock
index d1ae3d24cc..a5f471f336 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1993,9 +1993,10 @@
   dependencies:
     "@types/node" "*"
 
-"@types/mocha@^2.2.42":
-  version "2.2.48"
-  resolved "https://registry.yarnpkg.com/@types/mocha/-/mocha-2.2.48.tgz#3523b126a0b049482e1c3c11877460f76622ffab"
+"@types/mocha@^5.2.7":
+  version "5.2.7"
+  resolved "https://registry.yarnpkg.com/@types/mocha/-/mocha-5.2.7.tgz#315d570ccb56c53452ff8638738df60726d5b6ea"
+  integrity sha512-NYrtPht0wGzhwe9+/idPaBB+TqkY9AhTvOLMkThm0IoEfLaiVQZwBwyJ5puCkO3AUCWrmcoePjp2mbFocKy4SQ==
 
 "@types/nock@^10.0.1":
   version "10.0.1"
@@ -4127,10 +4128,6 @@ browser-resolve@^1.11.3:
   dependencies:
     resolve "1.1.7"
 
-browser-stdout@1.3.0:
-  version "1.3.0"
-  resolved "https://registry.yarnpkg.com/browser-stdout/-/browser-stdout-1.3.0.tgz#f351d32969d32fa5d7a5567154263d928ae3bd1f"
-
 browser-stdout@1.3.1:
   version "1.3.1"
   resolved "https://registry.yarnpkg.com/browser-stdout/-/browser-stdout-1.3.1.tgz#baa559ee14ced73452229bad7326467c61fabd60"
@@ -5067,10 +5064,6 @@ command-exists@^1.2.8:
   version "1.2.8"
   resolved "https://registry.yarnpkg.com/command-exists/-/command-exists-1.2.8.tgz#715acefdd1223b9c9b37110a149c6392c2852291"
 
-commander@2.11.0:
-  version "2.11.0"
-  resolved "https://registry.yarnpkg.com/commander/-/commander-2.11.0.tgz#157152fd1e7a6c8d98a5b715cf376df928004563"
-
 commander@2.17.x, commander@^2.7.1, commander@~2.17.1:
   version "2.17.1"
   resolved "https://registry.npmjs.org/commander/-/commander-2.17.1.tgz#bd77ab7de6de94205ceacc72f1716d29f20a77bf"
@@ -6210,10 +6203,6 @@ dezalgo@^1.0.0:
     asap "^2.0.0"
     wrappy "1"
 
-diff@3.3.1:
-  version "3.3.1"
-  resolved "https://registry.yarnpkg.com/diff/-/diff-3.3.1.tgz#aa8567a6eed03c531fc89d3f711cd0e5259dec75"
-
 diff@3.5.0, diff@^3.1.0, diff@^3.2.0:
   version "3.5.0"
   resolved "https://registry.yarnpkg.com/diff/-/diff-3.5.0.tgz#800c0dd1e0a8bfbc95835c202ad220fe317e5a12"
@@ -8453,17 +8442,6 @@ glob2base@^0.0.12:
   dependencies:
     find-index "^0.1.1"
 
-glob@7.1.2, glob@^7.0.0, glob@^7.0.3, glob@^7.0.5, glob@^7.0.6, glob@^7.1.1, glob@^7.1.2, glob@~7.1.2:
-  version "7.1.2"
-  resolved "https://registry.yarnpkg.com/glob/-/glob-7.1.2.tgz#c19c9df9a028702d678612384a6552404c636d15"
-  dependencies:
-    fs.realpath "^1.0.0"
-    inflight "^1.0.4"
-    inherits "2"
-    minimatch "^3.0.4"
-    once "^1.3.0"
-    path-is-absolute "^1.0.0"
-
 glob@7.1.3, glob@^7.1.3:
   version "7.1.3"
   resolved "https://registry.npmjs.org/glob/-/glob-7.1.3.tgz#3960832d3f1574108342dafd3a67b332c0969df1"
@@ -8494,6 +8472,17 @@ glob@^5.0.15:
     once "^1.3.0"
     path-is-absolute "^1.0.0"
 
+glob@^7.0.0, glob@^7.0.3, glob@^7.0.5, glob@^7.0.6, glob@^7.1.1, glob@^7.1.2, glob@~7.1.2:
+  version "7.1.2"
+  resolved "https://registry.yarnpkg.com/glob/-/glob-7.1.2.tgz#c19c9df9a028702d678612384a6552404c636d15"
+  dependencies:
+    fs.realpath "^1.0.0"
+    inflight "^1.0.4"
+    inherits "2"
+    minimatch "^3.0.4"
+    once "^1.3.0"
+    path-is-absolute "^1.0.0"
+
 glob@^7.1.4:
   version "7.1.4"
   resolved "https://registry.yarnpkg.com/glob/-/glob-7.1.4.tgz#aa608a2f6c577ad357e1ae5a5c26d9a8d1969255"
@@ -8678,10 +8667,6 @@ graceful-fs@4.1.15, graceful-fs@^3.0.0, graceful-fs@^4.0.0, graceful-fs@^4.1.10,
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/graceful-readlink/-/graceful-readlink-1.0.1.tgz#4cafad76bc62f02fa039b2f94e9a3dd3a391a725"
 
-growl@1.10.3:
-  version "1.10.3"
-  resolved "https://registry.yarnpkg.com/growl/-/growl-1.10.3.tgz#1926ba90cf3edfe2adb4927f5880bc22c66c790f"
-
 growl@1.10.5:
   version "1.10.5"
   resolved "https://registry.yarnpkg.com/growl/-/growl-1.10.5.tgz#f2735dc2283674fa67478b10181059355c369e5e"
@@ -8810,10 +8795,6 @@ has-flag@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/has-flag/-/has-flag-1.0.0.tgz#9d9e793165ce017a00f00418c43f942a7b1d11fa"
 
-has-flag@^2.0.0:
-  version "2.0.0"
-  resolved "https://registry.yarnpkg.com/has-flag/-/has-flag-2.0.0.tgz#e8207af1cc7b30d446cc70b734b5e8be18f88d51"
-
 has-flag@^3.0.0:
   version "3.0.0"
   resolved "https://registry.yarnpkg.com/has-flag/-/has-flag-3.0.0.tgz#b5d454dc2199ae225699f3467e5a07f3b955bafd"
@@ -8947,7 +8928,7 @@ hdkey@^1.0.0:
     safe-buffer "^5.1.1"
     secp256k1 "^3.0.1"
 
-he@1.1.1, he@1.1.x:
+he@1.1.x:
   version "1.1.1"
   resolved "https://registry.yarnpkg.com/he/-/he-1.1.1.tgz#93410fd21b009735151f8868c2f271f3427e23fd"
 
@@ -12151,21 +12132,6 @@ mobx@^4.2.0:
   version "4.3.1"
   resolved "https://registry.npmjs.org/mobx/-/mobx-4.3.1.tgz#334e5aab4916b1d43f0faf3605a64b1b4b3ccb8d"
 
-mocha@^4.1.0:
-  version "4.1.0"
-  resolved "https://registry.yarnpkg.com/mocha/-/mocha-4.1.0.tgz#7d86cfbcf35cb829e2754c32e17355ec05338794"
-  dependencies:
-    browser-stdout "1.3.0"
-    commander "2.11.0"
-    debug "3.1.0"
-    diff "3.3.1"
-    escape-string-regexp "1.0.5"
-    glob "7.1.2"
-    growl "1.10.3"
-    he "1.1.1"
-    mkdirp "0.5.1"
-    supports-color "4.4.0"
-
 mocha@^6.2.0:
   version "6.2.0"
   resolved "https://registry.yarnpkg.com/mocha/-/mocha-6.2.0.tgz#f896b642843445d1bb8bca60eabd9206b8916e56"
@@ -16885,12 +16851,6 @@ stylis@^3.5.0:
   version "3.5.0"
   resolved "https://registry.npmjs.org/stylis/-/stylis-3.5.0.tgz#016fa239663d77f868fef5b67cf201c4b7c701e1"
 
-supports-color@4.4.0:
-  version "4.4.0"
-  resolved "https://registry.yarnpkg.com/supports-color/-/supports-color-4.4.0.tgz#883f7ddabc165142b2a61427f3352ded195d1a3e"
-  dependencies:
-    has-flag "^2.0.0"
-
 supports-color@6.0.0:
   version "6.0.0"
   resolved "https://registry.yarnpkg.com/supports-color/-/supports-color-6.0.0.tgz#76cfe742cf1f41bb9b1c29ad03068c05b4c0e40a"