diff --git a/package-lock.json b/package-lock.json
index f2bea16..ecf1434 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -632,12 +632,6 @@
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     },
-    "@jest/create-cache-key-function": {
-      "version": "26.5.0",
-      "resolved": "https://registry.npmjs.org/@jest/create-cache-key-function/-/create-cache-key-function-26.5.0.tgz",
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-      "dev": true
-    },
     "@jest/environment": {
       "version": "26.6.1",
       "resolved": "https://registry.npmjs.org/@jest/environment/-/environment-26.6.1.tgz",
@@ -5644,12 +5638,6 @@
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-      "resolved": "https://registry.npmjs.org/lodash.memoize/-/lodash.memoize-4.1.2.tgz",
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-      "dev": true
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       "resolved": "https://registry.npmjs.org/lodash.sortby/-/lodash.sortby-4.7.0.tgz",
@@ -11642,19 +11630,17 @@
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-      "version": "26.4.2",
-      "resolved": "https://registry.npmjs.org/ts-jest/-/ts-jest-26.4.2.tgz",
-      "integrity": "sha512-0+MynTTzzbuy5rGjzsCKjxHJk5gY906c/FSaqQ3081+G7dp2Yygfa9hVlbrtNNcztffh1mC6Rs9jb/yHpcjsoQ==",
+      "version": "26.5.6",
+      "resolved": "https://registry.npmjs.org/ts-jest/-/ts-jest-26.5.6.tgz",
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       "dev": true,
       "requires": {
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-        "@types/jest": "26.x",
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         "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",
@@ -11662,9 +11648,9 @@
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-          "resolved": "https://registry.npmjs.org/json5/-/json5-2.1.3.tgz",
-          "integrity": "sha512-KXPvOm8K9IJKFM0bmdn8QXh7udDh1g/giieX0NLCaMnb4hEiVFqnop2ImTXCc5e0/oHz3LTqmHGtExn5hfMkOA==",
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+          "resolved": "https://registry.npmjs.org/json5/-/json5-2.2.0.tgz",
+          "integrity": "sha512-f+8cldu7X/y7RAJurMEJmdoKXGB/X550w2Nr3tTbezL6RwEE/iMcm+tZnXeoZtKuOq6ft8+CqzEkrIgx1fPoQA==",
           "dev": true,
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@@ -11677,15 +11663,18 @@
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-          "resolved": "https://registry.npmjs.org/semver/-/semver-7.3.2.tgz",
-          "integrity": "sha512-OrOb32TeeambH6UrhtShmF7CRDqhL6/5XpPNp2DuRH6+9QLw/orhp72j87v8Qa1ScDkvrrBNpZcDejAirJmfXQ==",
-          "dev": true
+          "version": "7.3.5",
+          "resolved": "https://registry.npmjs.org/semver/-/semver-7.3.5.tgz",
+          "integrity": "sha512-PoeGJYh8HK4BTO/a9Tf6ZG3veo/A7ZVsYrSA6J8ny9nb3B1VrpkuN+z9OE5wfE5p6H4LchYZsegiQgbJD94ZFQ==",
+          "dev": true,
+          "requires": {
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         "yargs-parser": {
-          "version": "20.2.3",
-          "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-20.2.3.tgz",
-          "integrity": "sha512-emOFRT9WVHw03QSvN5qor9QQT9+sw5vwxfYweivSMHTcAXPefwVae2FjO7JJjj8hCE4CzPOPeFM83VwT29HCww==",
+          "version": "20.2.7",
+          "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-20.2.7.tgz",
+          "integrity": "sha512-FiNkvbeHzB/syOjIUxFDCnhSfzAL8R5vs40MgLFBorXACCOAEaWu0gRZl14vG8MR9AOJIZbmkjhusqBYZ3HTHw==",
           "dev": true
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diff --git a/package.json b/package.json
index 18dcfc5..8decec7 100644
--- a/package.json
+++ b/package.json
@@ -38,7 +38,7 @@
     "eslint-plugin-standard": "^4.0.2",
     "jest": "^26.6.1",
     "semantic-release": "^17.2.1",
-    "ts-jest": "^26.4.2",
+    "ts-jest": "^26.5.6",
     "ts-node": "^9.0.0",
     "typescript": "^4.0.3"
   },