diff --git a/package.json b/package.json
index e10d514..3b4b0da 100644
--- a/package.json
+++ b/package.json
@@ -24,7 +24,7 @@
     "jest-playback": "1.0.1",
     "prettier": "1.7.4",
     "prettier-config-ikatyang": "1.1.1",
-    "ts-jest": "21.1.3",
+    "ts-jest": "21.1.4",
     "ts-node": "3.3.0",
     "tslint": "5.8.0",
     "tslint-config-ikatyang": "2.5.1",
diff --git a/yarn.lock b/yarn.lock
index c5804b5..08ece5b 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2664,9 +2664,9 @@ trim-right@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/trim-right/-/trim-right-1.0.1.tgz#cb2e1203067e0c8de1f614094b9fe45704ea6003"
 
-ts-jest@21.1.3:
-  version "21.1.3"
-  resolved "https://registry.yarnpkg.com/ts-jest/-/ts-jest-21.1.3.tgz#cc3c552e7e8a67db9ededc28c00ae98223614ddc"
+ts-jest@21.1.4:
+  version "21.1.4"
+  resolved "https://registry.yarnpkg.com/ts-jest/-/ts-jest-21.1.4.tgz#6b720cd4ebfacbc935468e60dd395392f817095b"
   dependencies:
     babel-core "^6.24.1"
     babel-plugin-istanbul "^4.1.4"
@@ -2677,7 +2677,7 @@ ts-jest@21.1.3:
     jest-util "^21.2.1"
     pkg-dir "^2.0.0"
     source-map-support "^0.5.0"
-    yargs "^9.0.1"
+    yargs "^10.0.3"
 
 ts-node@3.3.0:
   version "3.3.0"
@@ -2968,7 +2968,30 @@ yargs-parser@^7.0.0:
   dependencies:
     camelcase "^4.1.0"
 
-yargs@^9.0.0, yargs@^9.0.1:
+yargs-parser@^8.0.0:
+  version "8.0.0"
+  resolved "https://registry.yarnpkg.com/yargs-parser/-/yargs-parser-8.0.0.tgz#21d476330e5a82279a4b881345bf066102e219c6"
+  dependencies:
+    camelcase "^4.1.0"
+
+yargs@^10.0.3:
+  version "10.0.3"
+  resolved "https://registry.yarnpkg.com/yargs/-/yargs-10.0.3.tgz#6542debd9080ad517ec5048fb454efe9e4d4aaae"
+  dependencies:
+    cliui "^3.2.0"
+    decamelize "^1.1.1"
+    find-up "^2.1.0"
+    get-caller-file "^1.0.1"
+    os-locale "^2.0.0"
+    require-directory "^2.1.1"
+    require-main-filename "^1.0.1"
+    set-blocking "^2.0.0"
+    string-width "^2.0.0"
+    which-module "^2.0.0"
+    y18n "^3.2.1"
+    yargs-parser "^8.0.0"
+
+yargs@^9.0.0:
   version "9.0.1"
   resolved "https://registry.yarnpkg.com/yargs/-/yargs-9.0.1.tgz#52acc23feecac34042078ee78c0c007f5085db4c"
   dependencies: