diff --git a/package-lock.json b/package-lock.json
index 4493b0d896be..0d2ff3918ce8 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -19,7 +19,7 @@
         "@webref/idl": "file:packages/idl",
         "css-tree": "2.3.1",
         "flags": "0.1.3",
-        "mocha": "10.7.0",
+        "mocha": "10.7.3",
         "reffy": "17.1.2",
         "rimraf": "6.0.1",
         "strudy": "^2.2.0",
@@ -2153,9 +2153,9 @@
       }
     },
     "node_modules/mocha": {
-      "version": "10.7.0",
-      "resolved": "https://registry.npmjs.org/mocha/-/mocha-10.7.0.tgz",
-      "integrity": "sha512-v8/rBWr2VO5YkspYINnvu81inSz2y3ODJrhO175/Exzor1RcEZZkizgE2A+w/CAXXoESS8Kys5E62dOHGHzULA==",
+      "version": "10.7.3",
+      "resolved": "https://registry.npmjs.org/mocha/-/mocha-10.7.3.tgz",
+      "integrity": "sha512-uQWxAu44wwiACGqjbPYmjo7Lg8sFrS3dQe7PP2FQI+woptP4vZXSMcfMyFL/e1yFEeEpV4RtyTpZROOKmxis+A==",
       "dev": true,
       "dependencies": {
         "ansi-colors": "^4.1.3",
@@ -5476,9 +5476,9 @@
       "dev": true
     },
     "mocha": {
-      "version": "10.7.0",
-      "resolved": "https://registry.npmjs.org/mocha/-/mocha-10.7.0.tgz",
-      "integrity": "sha512-v8/rBWr2VO5YkspYINnvu81inSz2y3ODJrhO175/Exzor1RcEZZkizgE2A+w/CAXXoESS8Kys5E62dOHGHzULA==",
+      "version": "10.7.3",
+      "resolved": "https://registry.npmjs.org/mocha/-/mocha-10.7.3.tgz",
+      "integrity": "sha512-uQWxAu44wwiACGqjbPYmjo7Lg8sFrS3dQe7PP2FQI+woptP4vZXSMcfMyFL/e1yFEeEpV4RtyTpZROOKmxis+A==",
       "dev": true,
       "requires": {
         "ansi-colors": "^4.1.3",
diff --git a/package.json b/package.json
index 9a0388d8c79d..95e654585f35 100644
--- a/package.json
+++ b/package.json
@@ -35,7 +35,7 @@
     "@webref/idl": "file:packages/idl",
     "css-tree": "2.3.1",
     "flags": "0.1.3",
-    "mocha": "10.7.0",
+    "mocha": "10.7.3",
     "reffy": "17.1.2",
     "rimraf": "6.0.1",
     "strudy": "^2.2.0",