diff --git a/package.json b/package.json
index 09e81408..58930162 100644
--- a/package.json
+++ b/package.json
@@ -101,7 +101,7 @@
     "rollup-plugin-terser": "^7.0.0",
     "rollup-plugin-typescript2": "^0.29.0",
     "shx": "^0.3.3",
-    "ts-jest": "^26.4.4",
+    "ts-jest": "^26.5.1",
     "typescript": "^4.0.0"
   }
 }
diff --git a/yarn.lock b/yarn.lock
index 95847771..5b9b73fa 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -4842,7 +4842,7 @@ locate-path@^5.0.0:
   dependencies:
     p-locate "^4.1.0"
 
-lodash.memoize@4.x, lodash.memoize@^4.1.2:
+lodash.memoize@^4.1.2:
   version "4.1.2"
   resolved "https://registry.yarnpkg.com/lodash.memoize/-/lodash.memoize-4.1.2.tgz#bcc6c49a42a2840ed997f323eada5ecd182e0bfe"
   integrity sha1-vMbEmkKihA7Zl/Mj6tpezRguC/4=
@@ -4857,7 +4857,7 @@ lodash.uniq@^4.5.0:
   resolved "https://registry.yarnpkg.com/lodash.uniq/-/lodash.uniq-4.5.0.tgz#d0225373aeb652adc1bc82e4945339a842754773"
   integrity sha1-0CJTc662Uq3BvILklFM5qEJ1R3M=
 
-lodash@^4.17.15, lodash@^4.17.19, lodash@^4.17.20, lodash@^4.17.4:
+lodash@4.x, lodash@^4.17.15, lodash@^4.17.19, lodash@^4.17.20, lodash@^4.17.4:
   version "4.17.20"
   resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.20.tgz#b44a9b6297bcb698f1c51a3545a2b3b368d59c52"
   integrity sha512-PlhdFcillOINfeV7Ni6oF1TAEayyZBoZ8bcshTHqOYJYlrqzRK5hagpagky5o4HfCzzd1TRkXPMFq6cKk9rGmA==
@@ -6859,10 +6859,10 @@ 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@^26.5.1:
+  version "26.5.1"
+  resolved "https://registry.yarnpkg.com/ts-jest/-/ts-jest-26.5.1.tgz#4d53ee4481552f57c1624f0bd3425c8b17996150"
+  integrity sha512-G7Rmo3OJMvlqE79amJX8VJKDiRcd7/r61wh9fnvvG8cAjhA9edklGw/dCxRSQmfZ/z8NDums5srSVgwZos1qfg==
   dependencies:
     "@types/jest" "26.x"
     bs-logger "0.x"
@@ -6870,7 +6870,7 @@ ts-jest@^26.4.4:
     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"