diff --git a/package.json b/package.json
index bd05116..1a065e9 100644
--- a/package.json
+++ b/package.json
@@ -57,6 +57,11 @@
     }
   },
   "jest": {
+    "globals": {
+      "ts-jest": {
+        "skipBabel": true
+      }
+    },
     "mapCoverage": true,
     "transform": {
       ".(ts|tsx)": "<rootDir>/node_modules/ts-jest/preprocessor.js"
@@ -107,7 +112,7 @@
     "rollup-plugin-node-resolve": "^3.0.0",
     "rollup-plugin-typescript2": "^0.4.3",
     "semantic-release": "^6.3.6",
-    "ts-jest": "20.0.4",
+    "ts-jest": "^20.0.6",
     "ts-node": "^3.0.4",
     "tsc-watch": "^1.0.5",
     "tslint": "^5.3.2",
diff --git a/yarn.lock b/yarn.lock
index 82d77a9..8903486 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -35,6 +35,37 @@
     conventional-changelog "0.0.17"
     github-url-from-git "^1.4.0"
 
+"@types/babel-core@^6.7.14":
+  version "6.7.14"
+  resolved "https://registry.yarnpkg.com/@types/babel-core/-/babel-core-6.7.14.tgz#a08c900a98e8987c1a98d2ea4fa0a1805a7d131f"
+  dependencies:
+    "@types/babel-template" "*"
+    "@types/babel-traverse" "*"
+    "@types/babel-types" "*"
+
+"@types/babel-template@*":
+  version "6.7.14"
+  resolved "https://registry.yarnpkg.com/@types/babel-template/-/babel-template-6.7.14.tgz#8088a56f9d697d620d3d079c3ef66025b7a08d02"
+  dependencies:
+    "@types/babel-types" "*"
+    "@types/babylon" "*"
+
+"@types/babel-traverse@*":
+  version "6.7.17"
+  resolved "https://registry.yarnpkg.com/@types/babel-traverse/-/babel-traverse-6.7.17.tgz#5212a4edced81f53a6c4fb1fd7a34aa4ff6cf36b"
+  dependencies:
+    "@types/babel-types" "*"
+
+"@types/babel-types@*":
+  version "6.7.16"
+  resolved "https://registry.yarnpkg.com/@types/babel-types/-/babel-types-6.7.16.tgz#e2602896636858a0067971f7ca4bb8678038293f"
+
+"@types/babylon@*":
+  version "6.16.1"
+  resolved "https://registry.yarnpkg.com/@types/babylon/-/babylon-6.16.1.tgz#e4d10ab9e43a73703a17c6f41438bede28769340"
+  dependencies:
+    "@types/babel-types" "*"
+
 "@types/fs-extra@^3.0.0":
   version "3.0.3"
   resolved "https://registry.yarnpkg.com/@types/fs-extra/-/fs-extra-3.0.3.tgz#1d66eb670ebf657e57c0fda014df340c19d8aa0c"
@@ -393,7 +424,7 @@ babel-helpers@^6.24.1:
     babel-runtime "^6.22.0"
     babel-template "^6.24.1"
 
-babel-jest@^20.0.0, babel-jest@^20.0.3:
+babel-jest@^20.0.3:
   version "20.0.3"
   resolved "https://registry.yarnpkg.com/babel-jest/-/babel-jest-20.0.3.tgz#e4a03b13dc10389e140fc645d09ffc4ced301671"
   dependencies:
@@ -419,7 +450,7 @@ babel-plugin-external-helpers@^6.18.0, babel-plugin-external-helpers@^6.22.0:
   dependencies:
     babel-runtime "^6.22.0"
 
-babel-plugin-istanbul@^4.0.0:
+babel-plugin-istanbul@^4.0.0, babel-plugin-istanbul@^4.1.4:
   version "4.1.4"
   resolved "https://registry.yarnpkg.com/babel-plugin-istanbul/-/babel-plugin-istanbul-4.1.4.tgz#18dde84bf3ce329fddf3f4103fae921456d8e587"
   dependencies:
@@ -1622,13 +1653,6 @@ github@~0.1.10:
   version "0.1.16"
   resolved "https://registry.yarnpkg.com/github/-/github-0.1.16.tgz#895d2a85b0feb7980d89ac0ce4f44dcaa03f17b5"
 
-glob-all@^3.1.0:
-  version "3.1.0"
-  resolved "https://registry.yarnpkg.com/glob-all/-/glob-all-3.1.0.tgz#8913ddfb5ee1ac7812656241b03d5217c64b02ab"
-  dependencies:
-    glob "^7.0.5"
-    yargs "~1.2.6"
-
 glob-base@^0.3.0:
   version "0.3.0"
   resolved "https://registry.yarnpkg.com/glob-base/-/glob-base-0.3.0.tgz#dbb164f6221b1c0b1ccf82aea328b497df0ea3c4"
@@ -2658,10 +2682,6 @@ minimist@1.2.0, minimist@^1.1.1, minimist@^1.1.3, minimist@^1.2.0:
   version "1.2.0"
   resolved "https://registry.yarnpkg.com/minimist/-/minimist-1.2.0.tgz#a35008b20f41383eec1fb914f4cd5df79a264284"
 
-minimist@^0.1.0:
-  version "0.1.0"
-  resolved "https://registry.yarnpkg.com/minimist/-/minimist-0.1.0.tgz#99df657a52574c21c9057497df742790b2b4c0de"
-
 mkdirp@0.x.x, mkdirp@^0.5.0, mkdirp@^0.5.1:
   version "0.5.1"
   resolved "https://registry.yarnpkg.com/mkdirp/-/mkdirp-0.5.1.tgz#30057438eac6cf7f8c4767f38648d6697d75c903"
@@ -3788,14 +3808,16 @@ 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@20.0.4:
-  version "20.0.4"
-  resolved "https://registry.yarnpkg.com/ts-jest/-/ts-jest-20.0.4.tgz#ffe3987d48c8762cd7b6ae83518d203eca167618"
+ts-jest@^20.0.6:
+  version "20.0.6"
+  resolved "https://registry.yarnpkg.com/ts-jest/-/ts-jest-20.0.6.tgz#39c2810c05d6f6908dac15929dae206b494b73f4"
   dependencies:
-    babel-jest "^20.0.0"
+    "@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"
-    glob-all "^3.1.0"
     jest-config "^20.0.0"
     jest-util "^20.0.0"
     pkg-dir "^2.0.0"
@@ -4185,12 +4207,6 @@ yargs@^8.0.1:
     y18n "^3.2.1"
     yargs-parser "^7.0.0"
 
-yargs@~1.2.6:
-  version "1.2.6"
-  resolved "https://registry.yarnpkg.com/yargs/-/yargs-1.2.6.tgz#9c7b4a82fd5d595b2bf17ab6dcc43135432fe34b"
-  dependencies:
-    minimist "^0.1.0"
-
 yargs@~3.10.0:
   version "3.10.0"
   resolved "https://registry.yarnpkg.com/yargs/-/yargs-3.10.0.tgz#f7ee7bd857dd7c1d2d38c0e74efbd681d1431fd1"