diff --git a/package.json b/package.json
index 905789d..3aff6ac 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": "21.1.0",
+    "ts-jest": "21.1.1",
     "ts-node": "3.3.0",
     "tslint": "5.7.0",
     "tslint-config-ikatyang": "2.4.0",
diff --git a/yarn.lock b/yarn.lock
index 77c26f4..dce6740 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2658,9 +2658,9 @@ 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@21.1.0:
-  version "21.1.0"
-  resolved "https://registry.yarnpkg.com/ts-jest/-/ts-jest-21.1.0.tgz#f8d1a6dfadd6e65f8ced525c638eac3543842d3c"
+ts-jest@21.1.1:
+  version "21.1.1"
+  resolved "https://registry.yarnpkg.com/ts-jest/-/ts-jest-21.1.1.tgz#a63380127e59e112a113106237f302d17c72cd48"
   dependencies:
     babel-core "^6.24.1"
     babel-plugin-istanbul "^4.1.4"