diff --git a/package-lock.json b/package-lock.json
index 63f6a42f..78329e5b 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -27,7 +27,7 @@
         "@rollup/plugin-babel": "^6.0.3",
         "@rollup/plugin-node-resolve": "^15.1.0",
         "ace-builds": "^1.23.4",
-        "c8": "^7.14.0",
+        "c8": "^8.0.1",
         "codecov": "^3.8.3",
         "d3": "^7.8.5",
         "d3-dispatch": "^3.0.1",
@@ -2262,9 +2262,9 @@
       }
     },
     "node_modules/c8": {
-      "version": "7.14.0",
-      "resolved": "https://registry.npmjs.org/c8/-/c8-7.14.0.tgz",
-      "integrity": "sha512-i04rtkkcNcCf7zsQcSv/T9EbUn4RXQ6mropeMcjFOsQXQ0iGLAr/xT6TImQg4+U9hmNpN9XdvPkjUL1IzbgxJw==",
+      "version": "8.0.1",
+      "resolved": "https://registry.npmjs.org/c8/-/c8-8.0.1.tgz",
+      "integrity": "sha512-EINpopxZNH1mETuI0DzRA4MZpAUH+IFiRhnmFD3vFr3vdrgxqi3VfE3KL0AIL+zDq8rC9bZqwM/VDmmoe04y7w==",
       "dev": true,
       "dependencies": {
         "@bcoe/v8-coverage": "^0.2.3",
@@ -2272,48 +2272,19 @@
         "find-up": "^5.0.0",
         "foreground-child": "^2.0.0",
         "istanbul-lib-coverage": "^3.2.0",
-        "istanbul-lib-report": "^3.0.0",
-        "istanbul-reports": "^3.1.4",
+        "istanbul-lib-report": "^3.0.1",
+        "istanbul-reports": "^3.1.6",
         "rimraf": "^3.0.2",
         "test-exclude": "^6.0.0",
         "v8-to-istanbul": "^9.0.0",
-        "yargs": "^16.2.0",
-        "yargs-parser": "^20.2.9"
+        "yargs": "^17.7.2",
+        "yargs-parser": "^21.1.1"
       },
       "bin": {
         "c8": "bin/c8.js"
       },
       "engines": {
-        "node": ">=10.12.0"
-      }
-    },
-    "node_modules/c8/node_modules/cliui": {
-      "version": "7.0.4",
-      "resolved": "https://registry.npmjs.org/cliui/-/cliui-7.0.4.tgz",
-      "integrity": "sha512-OcRE68cOsVMXp1Yvonl/fzkQOyjLSu/8bhPDfQt0e0/Eb283TKP20Fs2MqoPsr9SwA595rRCA+QMzYc9nBP+JQ==",
-      "dev": true,
-      "dependencies": {
-        "string-width": "^4.2.0",
-        "strip-ansi": "^6.0.0",
-        "wrap-ansi": "^7.0.0"
-      }
-    },
-    "node_modules/c8/node_modules/yargs": {
-      "version": "16.2.0",
-      "resolved": "https://registry.npmjs.org/yargs/-/yargs-16.2.0.tgz",
-      "integrity": "sha512-D1mvvtDG0L5ft/jGWkLpG1+m0eQxOfaBvTNELraWj22wSVUMWxZUvYgJYcKh6jGGIkJFhH4IZPQhR4TKpc8mBw==",
-      "dev": true,
-      "dependencies": {
-        "cliui": "^7.0.2",
-        "escalade": "^3.1.1",
-        "get-caller-file": "^2.0.5",
-        "require-directory": "^2.1.1",
-        "string-width": "^4.2.0",
-        "y18n": "^5.0.5",
-        "yargs-parser": "^20.2.2"
-      },
-      "engines": {
-        "node": ">=10"
+        "node": ">=12"
       }
     },
     "node_modules/call-bind": {
@@ -5825,12 +5796,11 @@
       }
     },
     "node_modules/yargs-parser": {
-      "version": "20.2.9",
-      "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-20.2.9.tgz",
-      "integrity": "sha512-y11nGElTIV+CT3Zv9t7VKl+Q3hTQoT9a1Qzezhhl6Rp21gJ/IVTW7Z3y9EWXhuUBC2Shnf+DX0antecpAwSP8w==",
-      "dev": true,
+      "version": "21.1.1",
+      "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-21.1.1.tgz",
+      "integrity": "sha512-tVpsJW7DdjecAiFpbIB1e3qxIQsE6NoPc5/eTdrbbIC4h0LVsWhnoa3g+m2HclBIujHzsxZ4VJVA+GUuc2/LBw==",
       "engines": {
-        "node": ">=10"
+        "node": ">=12"
       }
     },
     "node_modules/yargs-unparser": {
@@ -5848,14 +5818,6 @@
         "node": ">=10"
       }
     },
-    "node_modules/yargs/node_modules/yargs-parser": {
-      "version": "21.1.1",
-      "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-21.1.1.tgz",
-      "integrity": "sha512-tVpsJW7DdjecAiFpbIB1e3qxIQsE6NoPc5/eTdrbbIC4h0LVsWhnoa3g+m2HclBIujHzsxZ4VJVA+GUuc2/LBw==",
-      "engines": {
-        "node": ">=12"
-      }
-    },
     "node_modules/yocto-queue": {
       "version": "0.1.0",
       "resolved": "https://registry.npmjs.org/yocto-queue/-/yocto-queue-0.1.0.tgz",
@@ -7395,9 +7357,9 @@
       "dev": true
     },
     "c8": {
-      "version": "7.14.0",
-      "resolved": "https://registry.npmjs.org/c8/-/c8-7.14.0.tgz",
-      "integrity": "sha512-i04rtkkcNcCf7zsQcSv/T9EbUn4RXQ6mropeMcjFOsQXQ0iGLAr/xT6TImQg4+U9hmNpN9XdvPkjUL1IzbgxJw==",
+      "version": "8.0.1",
+      "resolved": "https://registry.npmjs.org/c8/-/c8-8.0.1.tgz",
+      "integrity": "sha512-EINpopxZNH1mETuI0DzRA4MZpAUH+IFiRhnmFD3vFr3vdrgxqi3VfE3KL0AIL+zDq8rC9bZqwM/VDmmoe04y7w==",
       "dev": true,
       "requires": {
         "@bcoe/v8-coverage": "^0.2.3",
@@ -7405,41 +7367,13 @@
         "find-up": "^5.0.0",
         "foreground-child": "^2.0.0",
         "istanbul-lib-coverage": "^3.2.0",
-        "istanbul-lib-report": "^3.0.0",
-        "istanbul-reports": "^3.1.4",
+        "istanbul-lib-report": "^3.0.1",
+        "istanbul-reports": "^3.1.6",
         "rimraf": "^3.0.2",
         "test-exclude": "^6.0.0",
         "v8-to-istanbul": "^9.0.0",
-        "yargs": "^16.2.0",
-        "yargs-parser": "^20.2.9"
-      },
-      "dependencies": {
-        "cliui": {
-          "version": "7.0.4",
-          "resolved": "https://registry.npmjs.org/cliui/-/cliui-7.0.4.tgz",
-          "integrity": "sha512-OcRE68cOsVMXp1Yvonl/fzkQOyjLSu/8bhPDfQt0e0/Eb283TKP20Fs2MqoPsr9SwA595rRCA+QMzYc9nBP+JQ==",
-          "dev": true,
-          "requires": {
-            "string-width": "^4.2.0",
-            "strip-ansi": "^6.0.0",
-            "wrap-ansi": "^7.0.0"
-          }
-        },
-        "yargs": {
-          "version": "16.2.0",
-          "resolved": "https://registry.npmjs.org/yargs/-/yargs-16.2.0.tgz",
-          "integrity": "sha512-D1mvvtDG0L5ft/jGWkLpG1+m0eQxOfaBvTNELraWj22wSVUMWxZUvYgJYcKh6jGGIkJFhH4IZPQhR4TKpc8mBw==",
-          "dev": true,
-          "requires": {
-            "cliui": "^7.0.2",
-            "escalade": "^3.1.1",
-            "get-caller-file": "^2.0.5",
-            "require-directory": "^2.1.1",
-            "string-width": "^4.2.0",
-            "y18n": "^5.0.5",
-            "yargs-parser": "^20.2.2"
-          }
-        }
+        "yargs": "^17.7.2",
+        "yargs-parser": "^21.1.1"
       }
     },
     "call-bind": {
@@ -10006,20 +9940,12 @@
         "string-width": "^4.2.3",
         "y18n": "^5.0.5",
         "yargs-parser": "^21.1.1"
-      },
-      "dependencies": {
-        "yargs-parser": {
-          "version": "21.1.1",
-          "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-21.1.1.tgz",
-          "integrity": "sha512-tVpsJW7DdjecAiFpbIB1e3qxIQsE6NoPc5/eTdrbbIC4h0LVsWhnoa3g+m2HclBIujHzsxZ4VJVA+GUuc2/LBw=="
-        }
       }
     },
     "yargs-parser": {
-      "version": "20.2.9",
-      "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-20.2.9.tgz",
-      "integrity": "sha512-y11nGElTIV+CT3Zv9t7VKl+Q3hTQoT9a1Qzezhhl6Rp21gJ/IVTW7Z3y9EWXhuUBC2Shnf+DX0antecpAwSP8w==",
-      "dev": true
+      "version": "21.1.1",
+      "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-21.1.1.tgz",
+      "integrity": "sha512-tVpsJW7DdjecAiFpbIB1e3qxIQsE6NoPc5/eTdrbbIC4h0LVsWhnoa3g+m2HclBIujHzsxZ4VJVA+GUuc2/LBw=="
     },
     "yargs-unparser": {
       "version": "2.0.0",
diff --git a/package.json b/package.json
index bdde7726..d2f80da7 100644
--- a/package.json
+++ b/package.json
@@ -58,7 +58,7 @@
     "@rollup/plugin-babel": "^6.0.3",
     "@rollup/plugin-node-resolve": "^15.1.0",
     "ace-builds": "^1.23.4",
-    "c8": "^7.14.0",
+    "c8": "^8.0.1",
     "codecov": "^3.8.3",
     "d3": "^7.8.5",
     "d3-dispatch": "^3.0.1",