diff --git a/package.json b/package.json
index e58ee68..52aded4 100644
--- a/package.json
+++ b/package.json
@@ -17,7 +17,7 @@
     "@types/mocha": "^5.2.5",
     "@types/node": "^10.12.12",
     "mocha": "^5.2.0",
-    "ts-mocha": "^2.0.0",
+    "ts-mocha": "^8.0.0",
     "tslint": "^5.11.0",
     "typescript": "^3.2.1"
   },
diff --git a/yarn.lock b/yarn.lock
index f66acaf..197461f 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -4,7 +4,7 @@
 
 "@types/json5@^0.0.29":
   version "0.0.29"
-  resolved "http://registry.npmjs.org/@types/json5/-/json5-0.0.29.tgz#ee28707ae94e11d2b827bcbe5270bcea7f3e71ee"
+  resolved "https://registry.npmjs.org/@types/json5/-/json5-0.0.29.tgz#ee28707ae94e11d2b827bcbe5270bcea7f3e71ee"
   integrity sha1-7ihweulOEdK4J7y+UnC86n8+ce4=
 
 "@types/mocha@^5.2.5":
@@ -85,7 +85,7 @@ builtin-modules@^1.1.1:
 
 chalk@^1.1.3:
   version "1.1.3"
-  resolved "http://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz#a8115c55e4a702fe4d150abd3872822a7e09fc98"
+  resolved "https://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz#a8115c55e4a702fe4d150abd3872822a7e09fc98"
   integrity sha1-qBFcVeSnAv5NFQq9OHKCKn4J/Jg=
   dependencies:
     ansi-styles "^2.2.1"
@@ -117,7 +117,7 @@ color-name@1.1.3:
 
 commander@2.15.1:
   version "2.15.1"
-  resolved "http://registry.npmjs.org/commander/-/commander-2.15.1.tgz#df46e867d0fc2aec66a34662b406a9ccafff5b0f"
+  resolved "https://registry.npmjs.org/commander/-/commander-2.15.1.tgz#df46e867d0fc2aec66a34662b406a9ccafff5b0f"
   integrity sha512-VlfT9F3V0v+jr4yxPc5gg9s62/fIVWsd2Bk2iD435um1NlGMYdVCq+MjcXnhYq2icNOizHr1kK+5TI6H0Hy0ag==
 
 commander@^2.12.1:
@@ -241,7 +241,7 @@ js-yaml@^3.7.0:
 
 json5@^1.0.1:
   version "1.0.1"
-  resolved "http://registry.npmjs.org/json5/-/json5-1.0.1.tgz#779fb0018604fa854eacbf6252180d83543e3dbe"
+  resolved "https://registry.npmjs.org/json5/-/json5-1.0.1.tgz#779fb0018604fa854eacbf6252180d83543e3dbe"
   integrity sha512-aKS4WQjPenRxiQsC93MNfjx+nbF4PAdYzmd/1JIj8HYzqfbu86beTuNgXDzPknWk0n0uARlyewZo4s++ES36Ow==
   dependencies:
     minimist "^1.2.0"
@@ -260,17 +260,17 @@ minimatch@3.0.4, minimatch@^3.0.4:
 
 minimist@0.0.8:
   version "0.0.8"
-  resolved "http://registry.npmjs.org/minimist/-/minimist-0.0.8.tgz#857fcabfc3397d2625b8228262e86aa7a011b05d"
+  resolved "https://registry.npmjs.org/minimist/-/minimist-0.0.8.tgz#857fcabfc3397d2625b8228262e86aa7a011b05d"
   integrity sha1-hX/Kv8M5fSYluCKCYuhqp6ARsF0=
 
 minimist@^1.2.0:
   version "1.2.0"
-  resolved "http://registry.npmjs.org/minimist/-/minimist-1.2.0.tgz#a35008b20f41383eec1fb914f4cd5df79a264284"
+  resolved "https://registry.npmjs.org/minimist/-/minimist-1.2.0.tgz#a35008b20f41383eec1fb914f4cd5df79a264284"
   integrity sha1-o1AIsg9BOD7sH7kU9M1d95omQoQ=
 
 mkdirp@0.5.1, mkdirp@^0.5.1:
   version "0.5.1"
-  resolved "http://registry.npmjs.org/mkdirp/-/mkdirp-0.5.1.tgz#30057438eac6cf7f8c4767f38648d6697d75c903"
+  resolved "https://registry.npmjs.org/mkdirp/-/mkdirp-0.5.1.tgz#30057438eac6cf7f8c4767f38648d6697d75c903"
   integrity sha1-MAV0OOrGz3+MR2fzhkjWaX11yQM=
   dependencies:
     minimist "0.0.8"
@@ -306,7 +306,7 @@ once@^1.3.0:
 
 path-is-absolute@^1.0.0:
   version "1.0.1"
-  resolved "http://registry.npmjs.org/path-is-absolute/-/path-is-absolute-1.0.1.tgz#174b9268735534ffbc7ace6bf53a5a9e1b5c5f5f"
+  resolved "https://registry.npmjs.org/path-is-absolute/-/path-is-absolute-1.0.1.tgz#174b9268735534ffbc7ace6bf53a5a9e1b5c5f5f"
   integrity sha1-F0uSaHNVNP+8es5r9TpanhtcX18=
 
 path-parse@^1.0.5:
@@ -346,7 +346,7 @@ sprintf-js@~1.0.2:
 
 strip-ansi@^3.0.0:
   version "3.0.1"
-  resolved "http://registry.npmjs.org/strip-ansi/-/strip-ansi-3.0.1.tgz#6a385fb8853d952d5ff05d0e8aaf94278dc63dcf"
+  resolved "https://registry.npmjs.org/strip-ansi/-/strip-ansi-3.0.1.tgz#6a385fb8853d952d5ff05d0e8aaf94278dc63dcf"
   integrity sha1-ajhfuIU9lS1f8F0Oiq+UJ43GPc8=
   dependencies:
     ansi-regex "^2.0.0"
@@ -375,19 +375,19 @@ supports-color@^5.3.0:
   dependencies:
     has-flag "^3.0.0"
 
-ts-mocha@^2.0.0:
-  version "2.0.0"
-  resolved "https://registry.npmjs.org/ts-mocha/-/ts-mocha-2.0.0.tgz#0dbd3cd04671df9933b9303b4aa46347573c5635"
-  integrity sha512-Rj6+vvwKtOTs5GsNO1jLl4DIXUGnyAg5HFt2Yb4SHIRN45clTJkHWpNdTxCSL0u+1oeavSYJah6d1PZ++Ju5pw==
+ts-mocha@^8.0.0:
+  version "8.0.0"
+  resolved "https://registry.yarnpkg.com/ts-mocha/-/ts-mocha-8.0.0.tgz#962d0fa12eeb6468aa1a6b594bb3bbc818da3ef0"
+  integrity sha512-Kou1yxTlubLnD5C3unlCVO7nh0HERTezjoVhVw/M5S1SqoUec0WgllQvPk3vzPMc6by8m6xD1uR1yRf8lnVUbA==
   dependencies:
-    ts-node "7.0.0"
+    ts-node "7.0.1"
   optionalDependencies:
     tsconfig-paths "^3.5.0"
 
-ts-node@7.0.0:
-  version "7.0.0"
-  resolved "https://registry.npmjs.org/ts-node/-/ts-node-7.0.0.tgz#a94a13c75e5e1aa6b82814b84c68deb339ba7bff"
-  integrity sha512-klJsfswHP0FuOLsvBZ/zzCfUvakOSSxds78mVeK7I+qP76YWtxf16hEZsp3U+b0kIo82R5UatGFeblYMqabb2Q==
+ts-node@7.0.1:
+  version "7.0.1"
+  resolved "https://registry.yarnpkg.com/ts-node/-/ts-node-7.0.1.tgz#9562dc2d1e6d248d24bc55f773e3f614337d9baf"
+  integrity sha512-BVwVbPJRspzNh2yfslyT1PSbl5uIk03EZlb493RKHN4qej/D06n1cEhjlOJG69oFsE7OT8XjpTUcYf6pKTLMhw==
   dependencies:
     arrify "^1.0.0"
     buffer-from "^1.1.0"