diff --git a/package.json b/package.json
index 65de0fd..375aa08 100644
--- a/package.json
+++ b/package.json
@@ -24,7 +24,7 @@
     "jest-playback": "1.0.0",
     "prettier": "1.5.3",
     "prettier-config-ikatyang": "1.1.1",
-    "ts-jest": "20.0.7",
+    "ts-jest": "20.0.9",
     "tslint": "5.5.0",
     "tslint-config-ikatyang": "2.1.0",
     "tslint-config-prettier-ext": "1.3.0",
diff --git a/yarn.lock b/yarn.lock
index a0106f3..6abccb8 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -845,9 +845,9 @@ form-data@~2.1.1:
     combined-stream "^1.0.5"
     mime-types "^2.1.12"
 
-fs-extra@^3.0.0:
-  version "3.0.1"
-  resolved "https://registry.yarnpkg.com/fs-extra/-/fs-extra-3.0.1.tgz#3794f378c58b342ea7dbbb23095109c4b3b62291"
+fs-extra@^4.0.0:
+  version "4.0.1"
+  resolved "https://registry.yarnpkg.com/fs-extra/-/fs-extra-4.0.1.tgz#7fc0c6c8957f983f57f306a24e5b9ddd8d0dd880"
   dependencies:
     graceful-fs "^4.1.2"
     jsonfile "^3.0.0"
@@ -2335,16 +2335,16 @@ 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@20.0.7:
-  version "20.0.7"
-  resolved "https://registry.yarnpkg.com/ts-jest/-/ts-jest-20.0.7.tgz#82c99b9163f8c0a864a2b221238202fa1e623c26"
+ts-jest@20.0.9:
+  version "20.0.9"
+  resolved "https://registry.yarnpkg.com/ts-jest/-/ts-jest-20.0.9.tgz#b09a3060f18bc9206e0c5ebc7b0af6dc010e2dc4"
   dependencies:
     "@types/babel-core" "^6.7.14"
     babel-core "^6.24.1"
     babel-plugin-istanbul "^4.1.4"
     babel-plugin-transform-es2015-modules-commonjs "^6.24.1"
     babel-preset-jest "^20.0.3"
-    fs-extra "^3.0.0"
+    fs-extra "^4.0.0"
     jest-config "^20.0.0"
     jest-util "^20.0.0"
     pkg-dir "^2.0.0"