diff --git a/package.json b/package.json
index 9624a9a..b3ac894 100644
--- a/package.json
+++ b/package.json
@@ -28,7 +28,7 @@
     "jest-extended": "0.11.5",
     "prettier": "2.1.2",
     "semantic-release": "17.1.2",
-    "ts-jest": "26.4.1",
+    "ts-jest": "26.5.6",
     "typescript": "4.0.3"
   },
   "renovate": {
diff --git a/yarn.lock b/yarn.lock
index 0a20a56..fe49f95 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -854,14 +854,6 @@
     jest-diff "^25.2.1"
     pretty-format "^25.2.1"
 
-"@types/jest@26.x":
-  version "26.0.14"
-  resolved "https://registry.yarnpkg.com/@types/jest/-/jest-26.0.14.tgz#078695f8f65cb55c5a98450d65083b2b73e5a3f3"
-  integrity sha512-Hz5q8Vu0D288x3iWXePSn53W7hAjP0H7EQ6QvDO9c7t46mR0lNOLlfuwQ+JkVxuhygHzlzPX+0jKdA3ZgSh+Vg==
-  dependencies:
-    jest-diff "^25.2.1"
-    pretty-format "^25.2.1"
-
 "@types/node@*":
   version "14.0.10"
   resolved "https://registry.yarnpkg.com/@types/node/-/node-14.0.10.tgz#dbfaa170bd9eafccccb6d7060743a761b0844afd"
@@ -4365,11 +4357,6 @@ lodash.isstring@^4.0.1:
   resolved "https://registry.yarnpkg.com/lodash.isstring/-/lodash.isstring-4.0.1.tgz#d527dfb5456eca7cc9bb95d5daeaf88ba54a5451"
   integrity sha1-1SfftUVuynzJu5XV2ur4i6VKVFE=
 
-lodash.memoize@4.x:
-  version "4.1.2"
-  resolved "https://registry.yarnpkg.com/lodash.memoize/-/lodash.memoize-4.1.2.tgz#bcc6c49a42a2840ed997f323eada5ecd182e0bfe"
-  integrity sha1-vMbEmkKihA7Zl/Mj6tpezRguC/4=
-
 lodash.sortby@^4.7.0:
   version "4.7.0"
   resolved "https://registry.yarnpkg.com/lodash.sortby/-/lodash.sortby-4.7.0.tgz#edd14c824e2cc9c1e0b0a1b42bb5210516a42438"
@@ -4400,6 +4387,11 @@ lodash.without@~4.4.0:
   resolved "https://registry.yarnpkg.com/lodash.without/-/lodash.without-4.4.0.tgz#3cd4574a00b67bae373a94b748772640507b7aac"
   integrity sha1-PNRXSgC2e643OpS3SHcmQFB7eqw=
 
+lodash@4.x:
+  version "4.17.21"
+  resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.21.tgz#679591c564c3bffaae8454cf0b3df370c3d6911c"
+  integrity sha512-v2kDEe57lecTulaDIuNTPy3Ry4gLGJ6Z1O3vE1krgXZNrsQ+LFTGHVxVjcXPs17LhbZVGedAJv8XZ1tvj5FvSg==
+
 lodash@^4.17.13, lodash@^4.17.15, lodash@^4.17.4:
   version "4.17.15"
   resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.15.tgz#b447f6670a0455bbfeedd11392eff330ea097548"
@@ -6918,18 +6910,17 @@ trim-off-newlines@^1.0.0:
   resolved "https://registry.yarnpkg.com/trim-off-newlines/-/trim-off-newlines-1.0.1.tgz#9f9ba9d9efa8764c387698bcbfeb2c848f11adb3"
   integrity sha1-n5up2e+odkw4dpi8v+sshI8RrbM=
 
-ts-jest@26.4.1:
-  version "26.4.1"
-  resolved "https://registry.yarnpkg.com/ts-jest/-/ts-jest-26.4.1.tgz#08ec0d3fc2c3a39e4a46eae5610b69fafa6babd0"
-  integrity sha512-F4aFq01aS6mnAAa0DljNmKr/Kk9y4HVZ1m6/rtJ0ED56cuxINGq3Q9eVAh+z5vcYKe5qnTMvv90vE8vUMFxomg==
+ts-jest@26.5.6:
+  version "26.5.6"
+  resolved "https://registry.yarnpkg.com/ts-jest/-/ts-jest-26.5.6.tgz#c32e0746425274e1dfe333f43cd3c800e014ec35"
+  integrity sha512-rua+rCP8DxpA8b4DQD/6X2HQS8Zy/xzViVYfEs2OQu68tkCuKLV0Md8pmX55+W24uRIyAsf/BajRfxOs+R2MKA==
   dependencies:
-    "@types/jest" "26.x"
     bs-logger "0.x"
     buffer-from "1.x"
     fast-json-stable-stringify "2.x"
     jest-util "^26.1.0"
     json5 "2.x"
-    lodash.memoize "4.x"
+    lodash "4.x"
     make-error "1.x"
     mkdirp "1.x"
     semver "7.x"