diff --git a/package-lock.json b/package-lock.json
index 151585fa76..c4c3e46e23 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -57,7 +57,7 @@
         "karma-webpack": "^5.0.0",
         "loglevelnext": "^4.0.1",
         "marked": "2.0.3",
-        "mocha": "8.3.2",
+        "mocha": "8.4.0",
         "pixelmatch": "^5.1.0",
         "pngjs": "^6.0.0",
         "proj4": "2.7.2",
@@ -7704,9 +7704,9 @@
       "dev": true
     },
     "node_modules/mocha": {
-      "version": "8.3.2",
-      "resolved": "https://registry.npmjs.org/mocha/-/mocha-8.3.2.tgz",
-      "integrity": "sha512-UdmISwr/5w+uXLPKspgoV7/RXZwKRTiTjJ2/AC5ZiEztIoOYdfKb19+9jNmEInzx5pBsCyJQzarAxqIGBNYJhg==",
+      "version": "8.4.0",
+      "resolved": "https://registry.npmjs.org/mocha/-/mocha-8.4.0.tgz",
+      "integrity": "sha512-hJaO0mwDXmZS4ghXsvPVriOhsxQ7ofcpQdm8dE+jISUOKopitvnXFQmpRR7jd2K6VBG6E26gU3IAbXXGIbu4sQ==",
       "dev": true,
       "dependencies": {
         "@ungap/promise-all-settled": "1.1.2",
@@ -17531,9 +17531,9 @@
       "dev": true
     },
     "mocha": {
-      "version": "8.3.2",
-      "resolved": "https://registry.npmjs.org/mocha/-/mocha-8.3.2.tgz",
-      "integrity": "sha512-UdmISwr/5w+uXLPKspgoV7/RXZwKRTiTjJ2/AC5ZiEztIoOYdfKb19+9jNmEInzx5pBsCyJQzarAxqIGBNYJhg==",
+      "version": "8.4.0",
+      "resolved": "https://registry.npmjs.org/mocha/-/mocha-8.4.0.tgz",
+      "integrity": "sha512-hJaO0mwDXmZS4ghXsvPVriOhsxQ7ofcpQdm8dE+jISUOKopitvnXFQmpRR7jd2K6VBG6E26gU3IAbXXGIbu4sQ==",
       "dev": true,
       "requires": {
         "@ungap/promise-all-settled": "1.1.2",
diff --git a/package.json b/package.json
index 313b2e3371..c3630053ee 100644
--- a/package.json
+++ b/package.json
@@ -92,7 +92,7 @@
     "karma-webpack": "^5.0.0",
     "loglevelnext": "^4.0.1",
     "marked": "2.0.3",
-    "mocha": "8.3.2",
+    "mocha": "8.4.0",
     "pixelmatch": "^5.1.0",
     "pngjs": "^6.0.0",
     "proj4": "2.7.2",