diff --git a/package-lock.json b/package-lock.json
index c27289b..aba35b1 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -9,21 +9,16 @@
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       "license": "MIT",
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@@ -36,39 +31,65 @@
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+      "version": "5.0.0",
+      "resolved": "https://registry.npmjs.org/ajv-cli/-/ajv-cli-5.0.0.tgz",
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       "dev": true,
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-        "ajv-pack": "^0.3.0",
+        "ajv": "^8.0.0",
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         "glob": "^7.1.0",
-        "js-yaml": "^3.13.1",
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         "json5": "^2.1.3",
         "minimist": "^1.2.0"
       },
       "bin": {
-        "ajv": "index.js"
+        "ajv": "dist/index.js"
+      },
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+      },
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-      "resolved": "https://registry.npmjs.org/ajv-pack/-/ajv-pack-0.3.1.tgz",
-      "integrity": "sha1-tyxNQhnjko5ihC10Le2Tv1B5ZWA=",
+    "node_modules/ajv-cli/node_modules/ajv": {
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+      "resolved": "https://registry.npmjs.org/ajv/-/ajv-8.11.2.tgz",
+      "integrity": "sha512-E4bfmKAhGiSTvMfL1Myyycaub+cUEU2/IvpylXkUu7CHBkBj1f/ikdzbD7YQ6FKUbixDxeYvB/xY4fvyroDlQg==",
       "dev": true,
       "dependencies": {
-        "js-beautify": "^1.6.4",
-        "require-from-string": "^1.2.0"
+        "fast-deep-equal": "^3.1.1",
+        "json-schema-traverse": "^1.0.0",
+        "require-from-string": "^2.0.2",
+        "uri-js": "^4.2.2"
+      },
+      "funding": {
+        "type": "github",
+        "url": "https://github.com/sponsors/epoberezkin"
       }
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+      "resolved": "https://registry.npmjs.org/fast-deep-equal/-/fast-deep-equal-3.1.3.tgz",
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+      "dev": true
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+      "resolved": "https://registry.npmjs.org/json-schema-traverse/-/json-schema-traverse-1.0.0.tgz",
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@@ -131,9 +152,9 @@
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-      "integrity": "sha1-ibTRmasr7kneFk6gK4nORi1xt2c=",
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@@ -172,16 +193,6 @@
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@@ -195,28 +206,12 @@
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@@ -258,18 +253,6 @@
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@@ -379,20 +363,23 @@
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         "inherits": "2",
-        "minimatch": "^3.0.4",
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         "once": "^1.3.0",
         "path-is-absolute": "^1.0.0"
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       "engines": {
         "node": "*"
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       }
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@@ -458,7 +445,7 @@
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       "dev": true,
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-        "fast-deep-equal": "^1.0.0",
-        "fast-json-stable-stringify": "^2.0.0",
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+        "uri-js": "^4.2.2"
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+      "funding": {
+        "type": "github",
+        "url": "https://github.com/sponsors/epoberezkin"
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-      "integrity": "sha1-NJptRMU6Ud6JtAgFxdXlm0F9M0A=",
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-      "resolved": "https://registry.npmjs.org/os-homedir/-/os-homedir-1.0.2.tgz",
-      "integrity": "sha1-/7xJiDNuDoM94MFox+8VISGqf7M=",
-      "dev": true
-    },
-    "os-tmpdir": {
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-      "resolved": "https://registry.npmjs.org/os-tmpdir/-/os-tmpdir-1.0.2.tgz",
-      "integrity": "sha1-u+Z0BseaqFxc/sdm/lc0VV36EnQ=",
-      "dev": true
-    },
-    "osenv": {
-      "version": "0.1.5",
-      "resolved": "https://registry.npmjs.org/osenv/-/osenv-0.1.5.tgz",
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-      "dev": true,
-      "requires": {
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-        "os-tmpdir": "^1.0.0"
-      }
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       "resolved": "https://registry.npmjs.org/path-is-absolute/-/path-is-absolute-1.0.1.tgz",
-      "integrity": "sha1-F0uSaHNVNP+8es5r9TpanhtcX18=",
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       "dev": true
     },
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@@ -1722,12 +1524,6 @@
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       }
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-    "proto-list": {
-      "version": "1.2.4",
-      "resolved": "https://registry.npmjs.org/proto-list/-/proto-list-1.2.4.tgz",
-      "integrity": "sha1-IS1b/hMYMGpCD2QCuOJv85ZHqEk=",
-      "dev": true
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       "resolved": "https://registry.npmjs.org/prr/-/prr-1.0.1.tgz",
@@ -1735,12 +1531,6 @@
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-      "resolved": "https://registry.npmjs.org/pseudomap/-/pseudomap-1.0.2.tgz",
-      "integrity": "sha1-8FKijacOYYkX7wqKw0wa5aaChrM=",
-      "dev": true
-    },
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       "resolved": "https://registry.npmjs.org/psl/-/psl-1.5.0.tgz",
@@ -1791,9 +1581,9 @@
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-      "resolved": "https://registry.npmjs.org/require-from-string/-/require-from-string-1.2.1.tgz",
-      "integrity": "sha1-UpyczvJzgK3+yaL5ZbZJu+5jZBg=",
+      "version": "2.0.2",
+      "resolved": "https://registry.npmjs.org/require-from-string/-/require-from-string-2.0.2.tgz",
+      "integrity": "sha512-Xf0nWe6RseziFMu+Ap9biiUbmplq6S9/p+7w7YXP/JBHhrUDDUhwa+vANyubuqfZWTveU//DYVGsDG7RKL/vEw==",
       "dev": true
     },
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@@ -1810,18 +1600,6 @@
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-    "semver": {
-      "version": "5.7.1",
-      "resolved": "https://registry.npmjs.org/semver/-/semver-5.7.1.tgz",
-      "integrity": "sha512-sauaDf/PZdVgrLTNYHRtpXa1iRiKcaebiKQ1BJdpQlWH2lCvexQdX55snPFyK7QzpudqbCI0qXFfOasHdyNDGQ==",
-      "dev": true
-    },
-    "sigmund": {
-      "version": "1.0.1",
-      "resolved": "https://registry.npmjs.org/sigmund/-/sigmund-1.0.1.tgz",
-      "integrity": "sha1-P/IfGYytIXX587eBhT/ZTQ0ZtZA=",
-      "dev": true
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       "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.6.1.tgz",
@@ -1921,13 +1699,7 @@
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       "resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz",
-      "integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8=",
-      "dev": true
-    },
-    "yallist": {
-      "version": "2.1.2",
-      "resolved": "https://registry.npmjs.org/yallist/-/yallist-2.1.2.tgz",
-      "integrity": "sha1-HBH5IY8HYImkfdUS+TxmmaaoHVI=",
+      "integrity": "sha512-l4Sp/DRseor9wL6EvV2+TuQn63dMkPjZ/sp9XkghTEbV9KlPS1xUsZ3u7/IQO4wxtcFB4bgpQPRcR3QCvezPcQ==",
       "dev": true
     }
   }
diff --git a/package.json b/package.json
index 786a77a..71bf0f9 100644
--- a/package.json
+++ b/package.json
@@ -17,7 +17,7 @@
   },
   "homepage": "https://github.com/braver/programmingfonts#readme",
   "devDependencies": {
-    "ajv-cli": "^3.1.0",
+    "ajv-cli": "^5.0.0",
     "lessc": "^1.0.2"
   }
 }