diff --git a/package.json b/package.json
index 883c17c2..e2760416 100644
--- a/package.json
+++ b/package.json
@@ -274,7 +274,7 @@
     "style-loader": "^2.0.0",
     "stylelint": "^13.7.2",
     "stylelint-config-standard": "^20.0.0",
-    "ts-jest": "^26.4.0",
+    "ts-jest": "^26.4.3",
     "ts-loader": "^8.0.4",
     "ttfinfo": "^0.2.0",
     "typescript": "^4.0.3",
diff --git a/yarn.lock b/yarn.lock
index 15c2c5bc..7ef8543d 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -972,6 +972,11 @@
     slash "^3.0.0"
     strip-ansi "^6.0.0"
 
+"@jest/create-cache-key-function@^26.5.0":
+  version "26.5.0"
+  resolved "https://registry.yarnpkg.com/@jest/create-cache-key-function/-/create-cache-key-function-26.5.0.tgz#1d07947adc51ea17766d9f0ccf5a8d6ea94c47dc"
+  integrity sha512-DJ+pEBUIqarrbv1W/C39f9YH0rJ4wsXZ/VC6JafJPlHW2HOucKceeaqTOQj9MEDQZjySxMLkOq5mfXZXNZcmWw==
+
 "@jest/environment@^26.3.0":
   version "26.3.0"
   resolved "https://registry.yarnpkg.com/@jest/environment/-/environment-26.3.0.tgz#e6953ab711ae3e44754a025f838bde1a7fd236a0"
@@ -12617,11 +12622,12 @@ truncate-utf8-bytes@^1.0.0:
   dependencies:
     utf8-byte-length "^1.0.1"
 
-ts-jest@^26.4.0:
-  version "26.4.0"
-  resolved "https://registry.yarnpkg.com/ts-jest/-/ts-jest-26.4.0.tgz#903c7827f3d3bc33efc2f91be294b164400c32e3"
-  integrity sha512-ofBzoCqf6Nv/PoWb/ByV3VNKy2KJSikamOBxvR3E6eVdIw10GwAXoyvMWXXjZJK2s6S27ZE8fI+JBTnGaovl6Q==
+ts-jest@^26.4.3:
+  version "26.4.3"
+  resolved "https://registry.yarnpkg.com/ts-jest/-/ts-jest-26.4.3.tgz#d153a616033e7ec8544b97ddbe2638cbe38d53db"
+  integrity sha512-pFDkOKFGY+nL9v5pkhm+BIFpoAuno96ff7GMnIYr/3L6slFOS365SI0fGEVYx2RKGji5M2elxhWjDMPVcOCdSw==
   dependencies:
+    "@jest/create-cache-key-function" "^26.5.0"
     "@types/jest" "26.x"
     bs-logger "0.x"
     buffer-from "1.x"