diff --git a/package-lock.json b/package-lock.json
index dc97adf6..1c719643 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -23,7 +23,7 @@
         "@zeit/ncc": "^0.22.3",
         "jest": "^26.6.3",
         "prettier": "^2.2.1",
-        "ts-jest": "^25.5.1",
+        "ts-jest": "^26.5.4",
         "typescript": "^3.9.7"
       }
     },
@@ -3819,12 +3819,6 @@
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       "dev": true
     },
-    "node_modules/lodash.memoize": {
-      "version": "4.1.2",
-      "resolved": "https://registry.npmjs.org/lodash.memoize/-/lodash.memoize-4.1.2.tgz",
-      "integrity": "sha1-vMbEmkKihA7Zl/Mj6tpezRguC/4=",
-      "dev": true
-    },
     "node_modules/lru-cache": {
       "version": "6.0.0",
       "resolved": "https://registry.npmjs.org/lru-cache/-/lru-cache-6.0.0.tgz",
@@ -3977,15 +3971,15 @@
       }
     },
     "node_modules/mkdirp": {
-      "version": "0.5.5",
-      "resolved": "https://registry.npmjs.org/mkdirp/-/mkdirp-0.5.5.tgz",
-      "integrity": "sha512-NKmAlESf6jMGym1++R0Ra7wvhV+wFW63FaSOFPwRahvea0gMUcGUhVeAg/0BC0wiv9ih5NYPB1Wn1UEI1/L+xQ==",
+      "version": "1.0.4",
+      "resolved": "https://registry.npmjs.org/mkdirp/-/mkdirp-1.0.4.tgz",
+      "integrity": "sha512-vVqVZQyf3WLx2Shd0qJ9xuvqgAyKPLAiqITEtqW0oIUjzo3PePDd6fW9iFz30ef7Ysp/oiWqbhszeGWW2T6Gzw==",
       "dev": true,
-      "dependencies": {
-        "minimist": "^1.2.5"
-      },
       "bin": {
         "mkdirp": "bin/cmd.js"
+      },
+      "engines": {
+        "node": ">=10"
       }
     },
     "node_modules/ms": {
@@ -5892,36 +5886,40 @@
       }
     },
     "node_modules/ts-jest": {
-      "version": "25.5.1",
-      "resolved": "https://registry.npmjs.org/ts-jest/-/ts-jest-25.5.1.tgz",
-      "integrity": "sha512-kHEUlZMK8fn8vkxDjwbHlxXRB9dHYpyzqKIGDNxbzs+Rz+ssNDSDNusEK8Fk/sDd4xE6iKoQLfFkFVaskmTJyw==",
+      "version": "26.5.4",
+      "resolved": "https://registry.npmjs.org/ts-jest/-/ts-jest-26.5.4.tgz",
+      "integrity": "sha512-I5Qsddo+VTm94SukBJ4cPimOoFZsYTeElR2xy6H2TOVs+NsvgYglW8KuQgKoApOKuaU/Ix/vrF9ebFZlb5D2Pg==",
       "dev": true,
       "dependencies": {
         "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",
-        "micromatch": "4.x",
-        "mkdirp": "0.x",
-        "semver": "6.x",
-        "yargs-parser": "18.x"
+        "mkdirp": "1.x",
+        "semver": "7.x",
+        "yargs-parser": "20.x"
       },
       "bin": {
         "ts-jest": "cli.js"
       },
       "engines": {
-        "node": ">= 8"
+        "node": ">= 10"
+      },
+      "peerDependencies": {
+        "jest": ">=26 <27",
+        "typescript": ">=3.8 <5.0"
       }
     },
-    "node_modules/ts-jest/node_modules/semver": {
-      "version": "6.3.0",
-      "resolved": "https://registry.npmjs.org/semver/-/semver-6.3.0.tgz",
-      "integrity": "sha512-b39TBaTSfV6yBrapU89p5fKekE2m/NwnDocOVruQFS1/veMgdzuPcnOM34M6CwxW8jH/lxEa5rBoDeUwu5HHTw==",
+    "node_modules/ts-jest/node_modules/yargs-parser": {
+      "version": "20.2.7",
+      "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-20.2.7.tgz",
+      "integrity": "sha512-FiNkvbeHzB/syOjIUxFDCnhSfzAL8R5vs40MgLFBorXACCOAEaWu0gRZl14vG8MR9AOJIZbmkjhusqBYZ3HTHw==",
       "dev": true,
-      "bin": {
-        "semver": "bin/semver.js"
+      "engines": {
+        "node": ">=10"
       }
     },
     "node_modules/tunnel": {
@@ -9440,12 +9438,6 @@
       "integrity": "sha512-v2kDEe57lecTulaDIuNTPy3Ry4gLGJ6Z1O3vE1krgXZNrsQ+LFTGHVxVjcXPs17LhbZVGedAJv8XZ1tvj5FvSg==",
       "dev": true
     },
-    "lodash.memoize": {
-      "version": "4.1.2",
-      "resolved": "https://registry.npmjs.org/lodash.memoize/-/lodash.memoize-4.1.2.tgz",
-      "integrity": "sha1-vMbEmkKihA7Zl/Mj6tpezRguC/4=",
-      "dev": true
-    },
     "lru-cache": {
       "version": "6.0.0",
       "resolved": "https://registry.npmjs.org/lru-cache/-/lru-cache-6.0.0.tgz",
@@ -9564,13 +9556,10 @@
       }
     },
     "mkdirp": {
-      "version": "0.5.5",
-      "resolved": "https://registry.npmjs.org/mkdirp/-/mkdirp-0.5.5.tgz",
-      "integrity": "sha512-NKmAlESf6jMGym1++R0Ra7wvhV+wFW63FaSOFPwRahvea0gMUcGUhVeAg/0BC0wiv9ih5NYPB1Wn1UEI1/L+xQ==",
-      "dev": true,
-      "requires": {
-        "minimist": "^1.2.5"
-      }
+      "version": "1.0.4",
+      "resolved": "https://registry.npmjs.org/mkdirp/-/mkdirp-1.0.4.tgz",
+      "integrity": "sha512-vVqVZQyf3WLx2Shd0qJ9xuvqgAyKPLAiqITEtqW0oIUjzo3PePDd6fW9iFz30ef7Ysp/oiWqbhszeGWW2T6Gzw==",
+      "dev": true
     },
     "ms": {
       "version": "2.1.2",
@@ -11083,27 +11072,27 @@
       }
     },
     "ts-jest": {
-      "version": "25.5.1",
-      "resolved": "https://registry.npmjs.org/ts-jest/-/ts-jest-25.5.1.tgz",
-      "integrity": "sha512-kHEUlZMK8fn8vkxDjwbHlxXRB9dHYpyzqKIGDNxbzs+Rz+ssNDSDNusEK8Fk/sDd4xE6iKoQLfFkFVaskmTJyw==",
+      "version": "26.5.4",
+      "resolved": "https://registry.npmjs.org/ts-jest/-/ts-jest-26.5.4.tgz",
+      "integrity": "sha512-I5Qsddo+VTm94SukBJ4cPimOoFZsYTeElR2xy6H2TOVs+NsvgYglW8KuQgKoApOKuaU/Ix/vrF9ebFZlb5D2Pg==",
       "dev": true,
       "requires": {
         "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",
-        "micromatch": "4.x",
-        "mkdirp": "0.x",
-        "semver": "6.x",
-        "yargs-parser": "18.x"
+        "mkdirp": "1.x",
+        "semver": "7.x",
+        "yargs-parser": "20.x"
       },
       "dependencies": {
-        "semver": {
-          "version": "6.3.0",
-          "resolved": "https://registry.npmjs.org/semver/-/semver-6.3.0.tgz",
-          "integrity": "sha512-b39TBaTSfV6yBrapU89p5fKekE2m/NwnDocOVruQFS1/veMgdzuPcnOM34M6CwxW8jH/lxEa5rBoDeUwu5HHTw==",
+        "yargs-parser": {
+          "version": "20.2.7",
+          "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-20.2.7.tgz",
+          "integrity": "sha512-FiNkvbeHzB/syOjIUxFDCnhSfzAL8R5vs40MgLFBorXACCOAEaWu0gRZl14vG8MR9AOJIZbmkjhusqBYZ3HTHw==",
           "dev": true
         }
       }
diff --git a/package.json b/package.json
index b95c09fd..49ea7e1d 100644
--- a/package.json
+++ b/package.json
@@ -46,7 +46,7 @@
     "@zeit/ncc": "^0.22.3",
     "jest": "^26.6.3",
     "prettier": "^2.2.1",
-    "ts-jest": "^25.5.1",
+    "ts-jest": "^26.5.4",
     "typescript": "^3.9.7"
   }
 }