diff --git a/package.json b/package.json
index e6b1fa1..995be00 100644
--- a/package.json
+++ b/package.json
@@ -44,7 +44,7 @@
     "husky": "4.3.0",
     "jest": "26.6.3",
     "prettier": "2.2.1",
-    "ts-jest": "26.4.4",
+    "ts-jest": "26.5.6",
     "ts-node": "9.1.1",
     "tslib": "2.0.3",
     "typescript": "4.1.2"
diff --git a/yarn.lock b/yarn.lock
index 350776a..adc2db9 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -880,7 +880,7 @@
   dependencies:
     "@types/istanbul-lib-report" "*"
 
-"@types/jest@26.0.15", "@types/jest@26.x":
+"@types/jest@26.0.15":
   version "26.0.15"
   resolved "https://registry.yarnpkg.com/@types/jest/-/jest-26.0.15.tgz#12e02c0372ad0548e07b9f4e19132b834cb1effe"
   integrity sha512-s2VMReFXRg9XXxV+CW9e5Nz8fH2K1aEhwgjUqPPbQd7g95T0laAcvLv032EhFHIa5GHsZ8W7iJEQVaJq6k3Gog==
@@ -3500,11 +3500,6 @@ lodash.chunk@^4.2.0:
   resolved "https://registry.yarnpkg.com/lodash.chunk/-/lodash.chunk-4.2.0.tgz#66e5ce1f76ed27b4303d8c6512e8d1216e8106bc"
   integrity sha1-ZuXOH3btJ7QwPYxlEujRIW6BBrw=
 
-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"
@@ -3525,6 +3520,11 @@ lodash.templatesettings@^4.0.0:
   dependencies:
     lodash._reinterpolate "^3.0.0"
 
+lodash@4.x:
+  version "4.17.21"
+  resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.21.tgz#679591c564c3bffaae8454cf0b3df370c3d6911c"
+  integrity sha512-v2kDEe57lecTulaDIuNTPy3Ry4gLGJ6Z1O3vE1krgXZNrsQ+LFTGHVxVjcXPs17LhbZVGedAJv8XZ1tvj5FvSg==
+
 lodash@^4.17.11, lodash@^4.17.19, lodash@^4.17.20:
   version "4.17.20"
   resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.20.tgz#b44a9b6297bcb698f1c51a3545a2b3b368d59c52"
@@ -4919,18 +4919,17 @@ tr46@^2.0.2:
   dependencies:
     punycode "^2.1.1"
 
-ts-jest@26.4.4:
-  version "26.4.4"
-  resolved "https://registry.yarnpkg.com/ts-jest/-/ts-jest-26.4.4.tgz#61f13fb21ab400853c532270e52cc0ed7e502c49"
-  integrity sha512-3lFWKbLxJm34QxyVNNCgXX1u4o/RV0myvA2y2Bxm46iGIjKlaY0own9gIckbjZJPn+WaJEnfPPJ20HHGpoq4yg==
+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"