diff --git a/package-lock.json b/package-lock.json
index 65ebcf2..2417910 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -15,7 +15,7 @@
         "openpgp": "^5.0.1"
       },
       "devDependencies": {
-        "@types/jest": "^27.0.3",
+        "@types/jest": "^27.4.0",
         "@types/node": "^16.11.12",
         "@typescript-eslint/eslint-plugin": "^5.6.0",
         "@typescript-eslint/parser": "^5.6.0",
@@ -1303,9 +1303,9 @@
       }
     },
     "node_modules/@types/jest": {
-      "version": "27.0.3",
-      "resolved": "https://registry.npmjs.org/@types/jest/-/jest-27.0.3.tgz",
-      "integrity": "sha512-cmmwv9t7gBYt7hNKH5Spu7Kuu/DotGa+Ff+JGRKZ4db5eh8PnKS4LuebJ3YLUoyOyIHraTGyULn23YtEAm0VSg==",
+      "version": "27.4.0",
+      "resolved": "https://registry.npmjs.org/@types/jest/-/jest-27.4.0.tgz",
+      "integrity": "sha512-gHl8XuC1RZ8H2j5sHv/JqsaxXkDDM9iDOgu0Wp8sjs4u/snb2PVehyWXJPr+ORA0RPpgw231mnutWI1+0hgjIQ==",
       "dev": true,
       "dependencies": {
         "jest-diff": "^27.0.0",
@@ -6577,9 +6577,9 @@
       }
     },
     "@types/jest": {
-      "version": "27.0.3",
-      "resolved": "https://registry.npmjs.org/@types/jest/-/jest-27.0.3.tgz",
-      "integrity": "sha512-cmmwv9t7gBYt7hNKH5Spu7Kuu/DotGa+Ff+JGRKZ4db5eh8PnKS4LuebJ3YLUoyOyIHraTGyULn23YtEAm0VSg==",
+      "version": "27.4.0",
+      "resolved": "https://registry.npmjs.org/@types/jest/-/jest-27.4.0.tgz",
+      "integrity": "sha512-gHl8XuC1RZ8H2j5sHv/JqsaxXkDDM9iDOgu0Wp8sjs4u/snb2PVehyWXJPr+ORA0RPpgw231mnutWI1+0hgjIQ==",
       "dev": true,
       "requires": {
         "jest-diff": "^27.0.0",
diff --git a/package.json b/package.json
index 9ec6a6f..f181895 100644
--- a/package.json
+++ b/package.json
@@ -30,7 +30,7 @@
     "openpgp": "^5.0.1"
   },
   "devDependencies": {
-    "@types/jest": "^27.0.3",
+    "@types/jest": "^27.4.0",
     "@types/node": "^16.11.12",
     "@typescript-eslint/eslint-plugin": "^5.6.0",
     "@typescript-eslint/parser": "^5.6.0",