diff --git a/package-lock.json b/package-lock.json
index 37bceae..6cae062 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -3742,7 +3742,9 @@
       "license": "MIT"
     },
     "node_modules/c8": {
-      "version": "9.1.0",
+      "version": "10.1.2",
+      "resolved": "https://registry.npmjs.org/c8/-/c8-10.1.2.tgz",
+      "integrity": "sha512-Qr6rj76eSshu5CgRYvktW0uM0CFY0yi4Fd5D0duDXO6sYinyopmftUiJVuzBQxQcwQLor7JWDVRP+dUfCmzgJw==",
       "dev": true,
       "license": "ISC",
       "dependencies": {
@@ -3753,7 +3755,7 @@
         "istanbul-lib-coverage": "^3.2.0",
         "istanbul-lib-report": "^3.0.1",
         "istanbul-reports": "^3.1.6",
-        "test-exclude": "^6.0.0",
+        "test-exclude": "^7.0.1",
         "v8-to-istanbul": "^9.0.0",
         "yargs": "^17.7.2",
         "yargs-parser": "^21.1.1"
@@ -3762,7 +3764,77 @@
         "c8": "bin/c8.js"
       },
       "engines": {
-        "node": ">=14.14.0"
+        "node": ">=18"
+      },
+      "peerDependencies": {
+        "monocart-coverage-reports": "^2"
+      },
+      "peerDependenciesMeta": {
+        "monocart-coverage-reports": {
+          "optional": true
+        }
+      }
+    },
+    "node_modules/c8/node_modules/brace-expansion": {
+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-2.0.1.tgz",
+      "integrity": "sha512-XnAIvQ8eM+kC6aULx6wuQiwVsnzsi9d3WxzV3FpWTGA19F621kwdbsAcFKXgKUHZWsy+mY6iL1sHTxWEFCytDA==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "balanced-match": "^1.0.0"
+      }
+    },
+    "node_modules/c8/node_modules/glob": {
+      "version": "10.4.5",
+      "resolved": "https://registry.npmjs.org/glob/-/glob-10.4.5.tgz",
+      "integrity": "sha512-7Bv8RF0k6xjo7d4A/PxYLbUCfb6c+Vpd2/mB2yRDlew7Jb5hEXiCD9ibfO7wpk8i4sevK6DFny9h7EYbM3/sHg==",
+      "dev": true,
+      "license": "ISC",
+      "dependencies": {
+        "foreground-child": "^3.1.0",
+        "jackspeak": "^3.1.2",
+        "minimatch": "^9.0.4",
+        "minipass": "^7.1.2",
+        "package-json-from-dist": "^1.0.0",
+        "path-scurry": "^1.11.1"
+      },
+      "bin": {
+        "glob": "dist/esm/bin.mjs"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/isaacs"
+      }
+    },
+    "node_modules/c8/node_modules/minimatch": {
+      "version": "9.0.5",
+      "resolved": "https://registry.npmjs.org/minimatch/-/minimatch-9.0.5.tgz",
+      "integrity": "sha512-G6T0ZX48xgozx7587koeX9Ys2NYy6Gmv//P89sEte9V9whIapMNF4idKxnW2QtCcLiTWlb/wfCabAtAFWhhBow==",
+      "dev": true,
+      "license": "ISC",
+      "dependencies": {
+        "brace-expansion": "^2.0.1"
+      },
+      "engines": {
+        "node": ">=16 || 14 >=14.17"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/isaacs"
+      }
+    },
+    "node_modules/c8/node_modules/test-exclude": {
+      "version": "7.0.1",
+      "resolved": "https://registry.npmjs.org/test-exclude/-/test-exclude-7.0.1.tgz",
+      "integrity": "sha512-pFYqmTw68LXVjeWJMST4+borgQP2AyMNbg1BpZh9LbyhUeNkeaPF9gzfPGUAnSMV3qPYdWUwDIjjCLiSDOl7vg==",
+      "dev": true,
+      "license": "ISC",
+      "dependencies": {
+        "@istanbuljs/schema": "^0.1.2",
+        "glob": "^10.4.1",
+        "minimatch": "^9.0.4"
+      },
+      "engines": {
+        "node": ">=18"
       }
     },
     "node_modules/cacheable-lookup": {
@@ -11481,7 +11553,7 @@
       "license": "Apache-2.0",
       "devDependencies": {
         "@humanfs/types": "^0.15.0",
-        "c8": "^9.0.0",
+        "c8": "^10.0.0",
         "mocha": "^10.2.0",
         "typescript": "^5.2.2"
       },
diff --git a/packages/core/package.json b/packages/core/package.json
index c93c30a..c0edb4a 100644
--- a/packages/core/package.json
+++ b/packages/core/package.json
@@ -45,7 +45,7 @@
   },
   "devDependencies": {
     "@humanfs/types": "^0.15.0",
-    "c8": "^9.0.0",
+    "c8": "^10.0.0",
     "mocha": "^10.2.0",
     "typescript": "^5.2.2"
   }