diff --git a/package.json b/package.json
index 7489f0b..03489ab 100644
--- a/package.json
+++ b/package.json
@@ -52,7 +52,7 @@
     "rollup-plugin-terser": "^7.0.2",
     "rollup-plugin-typescript2": "^0.30.0",
     "size-limit": "^4.9.2",
-    "ts-jest": "^26.5.2",
+    "ts-jest": "^26.5.3",
     "typescript": "^4.2.2",
     "vue": "^3.0.6",
     "yorkie": "^2.0.0"
diff --git a/yarn.lock b/yarn.lock
index 3831d69..2032694 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -738,7 +738,7 @@
   dependencies:
     "@types/istanbul-lib-report" "*"
 
-"@types/jest@26.x", "@types/jest@^26.0.20":
+"@types/jest@^26.0.20":
   version "26.0.20"
   resolved "https://registry.yarnpkg.com/@types/jest/-/jest-26.0.20.tgz#cd2f2702ecf69e86b586e1f5223a60e454056307"
   integrity sha512-9zi2Y+5USJRxd0FsahERhBwlcvFh6D2GLQnY2FH2BzK8J9s9omvNHIbvABwIluXa0fD8XVKMLTO0aOEuUfACAA==
@@ -7547,12 +7547,11 @@ 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@^26.5.2:
-  version "26.5.2"
-  resolved "https://registry.yarnpkg.com/ts-jest/-/ts-jest-26.5.2.tgz#5281d6b44c2f94f71205728a389edc3d7995b0c4"
-  integrity sha512-bwyJ2zJieSugf7RB+o8fgkMeoMVMM2KPDE0UklRLuACxjwJsOrZNo6chrcScmK33YavPSwhARffy8dZx5LJdUQ==
+ts-jest@^26.5.3:
+  version "26.5.3"
+  resolved "https://registry.yarnpkg.com/ts-jest/-/ts-jest-26.5.3.tgz#a6ee00ba547be3b09877550df40a1465d0295554"
+  integrity sha512-nBiiFGNvtujdLryU7MiMQh1iPmnZ/QvOskBbD2kURiI1MwqvxlxNnaAB/z9TbslMqCsSbu5BXvSSQPc5tvHGeA==
   dependencies:
-    "@types/jest" "26.x"
     bs-logger "0.x"
     buffer-from "1.x"
     fast-json-stable-stringify "2.x"