diff --git a/package-lock.json b/package-lock.json
index b2bcdbe..29cc003 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -18,7 +18,7 @@
         "leaflet.markercluster": "^1.5.3"
       },
       "devDependencies": {
-        "del": "^6.1.1",
+        "del": "^8.0.1",
         "gulp": "^5.0.1",
         "gulp-clean-css": "^4.3.0",
         "gulp-concat": "^2.6.1",
@@ -88,6 +88,19 @@
         "node": ">= 8"
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+    "node_modules/@sindresorhus/merge-streams": {
+      "version": "2.3.0",
+      "resolved": "https://registry.npmjs.org/@sindresorhus/merge-streams/-/merge-streams-2.3.0.tgz",
+      "integrity": "sha512-LtoMMhxAlorcGhmFYI+LhPgbPZCkgP6ra1YL604EeF6U98pLlQ3iWIGMdWSC+vWmPBWBNgmDBAhnAobLROJmwg==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=18"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/sindresorhus"
+      }
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       "resolved": "https://registry.npmjs.org/@types/expect/-/expect-1.20.4.tgz",
@@ -116,20 +129,6 @@
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-      "dev": true,
-      "license": "MIT",
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-        "indent-string": "^4.0.0"
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@@ -233,16 +232,6 @@
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-      "resolved": "https://registry.npmjs.org/array-union/-/array-union-2.1.0.tgz",
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-      "dev": true,
-      "license": "MIT",
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@@ -311,13 +300,6 @@
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-      "resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-1.0.2.tgz",
-      "integrity": "sha512-3oSeUO0TMV67hN1AmbXsK4yaqU7tjiHlbxRDZOpH0KW9+CeX4bRAaX0Anxt0tx2MrpRpWwQaPwIlISEJhYU5Pw==",
-      "dev": true,
-      "license": "MIT"
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@@ -407,17 +389,6 @@
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-      "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-1.1.12.tgz",
-      "integrity": "sha512-9T9UjW3r0UW5c1Q7GTwllptXwhvYmEzFhzMfZ9H7FQWt+uZePjZPjBP/W1ZEyZ1twGWom5/56TF4lPcqjnDHcg==",
-      "dev": true,
-      "license": "MIT",
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@@ -511,16 +482,6 @@
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-      "integrity": "sha512-4diC9HaTE+KRAMWhDhrGOECgWZxoevMc5TlkObMqNSsVU62PYzXZ/SMTjzyGAFF1YusgxGcSWTEXBhp0CPwQ1A==",
-      "dev": true,
-      "license": "MIT",
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@@ -592,13 +553,6 @@
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-      "resolved": "https://registry.npmjs.org/concat-map/-/concat-map-0.0.1.tgz",
-      "integrity": "sha512-/Srv4dswyQNBfohGpz9o6Yb3Gz3SrUDqBH5rTuhGR7ahtlbYKnVxw2bCFMRljaA7EXHaXZ8wsHdodFvbkhKmqg==",
-      "dev": true,
-      "license": "MIT"
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@@ -638,23 +592,22 @@
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+      "version": "8.0.1",
+      "resolved": "https://registry.npmjs.org/del/-/del-8.0.1.tgz",
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       "dev": true,
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-        "graceful-fs": "^4.2.4",
-        "is-glob": "^4.0.1",
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-        "is-path-inside": "^3.0.2",
-        "p-map": "^4.0.0",
-        "rimraf": "^3.0.2",
-        "slash": "^3.0.0"
+        "globby": "^14.0.2",
+        "is-glob": "^4.0.3",
+        "is-path-cwd": "^3.0.0",
+        "is-path-inside": "^4.0.0",
+        "p-map": "^7.0.2",
+        "presentable-error": "^0.0.1",
+        "slash": "^5.1.0"
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-        "node": ">=10"
+        "node": ">=18"
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         "url": "https://github.com/sponsors/sindresorhus"
@@ -670,19 +623,6 @@
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-      "dev": true,
-      "license": "MIT",
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@@ -911,13 +851,6 @@
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@@ -953,28 +886,6 @@
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-      "deprecated": "Glob versions prior to v9 are no longer supported",
-      "dev": true,
-      "license": "ISC",
-      "dependencies": {
-        "fs.realpath": "^1.0.0",
-        "inflight": "^1.0.4",
-        "inherits": "2",
-        "minimatch": "^3.1.1",
-        "once": "^1.3.0",
-        "path-is-absolute": "^1.0.0"
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-      "funding": {
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@@ -1068,21 +979,21 @@
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+      "version": "14.1.0",
+      "resolved": "https://registry.npmjs.org/globby/-/globby-14.1.0.tgz",
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-        "dir-glob": "^3.0.1",
-        "fast-glob": "^3.2.9",
-        "ignore": "^5.2.0",
-        "merge2": "^1.4.1",
-        "slash": "^3.0.0"
+        "@sindresorhus/merge-streams": "^2.1.0",
+        "fast-glob": "^3.3.3",
+        "ignore": "^7.0.3",
+        "path-type": "^6.0.0",
+        "slash": "^5.1.0",
+        "unicorn-magic": "^0.3.0"
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-        "node": ">=10"
+        "node": ">=18"
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       "funding": {
         "url": "https://github.com/sponsors/sindresorhus"
@@ -1413,37 +1324,15 @@
       "license": "BSD-3-Clause"
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+      "version": "7.0.5",
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       "dev": true,
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-      "dev": true,
-      "license": "MIT",
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-      "deprecated": "This module is not supported, and leaks memory. Do not use it. Check out lru-cache if you want a good and tested way to coalesce async requests by a key value, which is much more comprehensive and powerful.",
-      "dev": true,
-      "license": "ISC",
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@@ -1565,23 +1454,29 @@
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+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/is-path-cwd/-/is-path-cwd-3.0.0.tgz",
+      "integrity": "sha512-kyiNFFLU0Ampr6SDZitD/DwUo4Zs1nSdnygUBqsu3LooL00Qvb5j+UnvApUn/TTj1J3OuE6BTdQ5rudKmU2ZaA==",
       "dev": true,
       "license": "MIT",
       "engines": {
-        "node": ">=6"
+        "node": "^12.20.0 || ^14.13.1 || >=16.0.0"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/sindresorhus"
       }
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-      "resolved": "https://registry.npmjs.org/is-path-inside/-/is-path-inside-3.0.3.tgz",
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+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/is-path-inside/-/is-path-inside-4.0.0.tgz",
+      "integrity": "sha512-lJJV/5dYS+RcL8uQdBDW9c9uWFLLBNRyFhnAKXw5tVqLlKZ4RMGZKv+YQ/IA3OhD+RpbJa1LLFM1FQPGyIXvOA==",
       "dev": true,
       "license": "MIT",
       "engines": {
-        "node": ">=8"
+        "node": ">=12"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/sindresorhus"
       }
     },
     "node_modules/is-plain-object": {
@@ -1833,19 +1728,6 @@
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-      "dev": true,
-      "license": "ISC",
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@@ -1949,16 +1831,13 @@
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+      "version": "7.0.4",
+      "resolved": "https://registry.npmjs.org/p-map/-/p-map-7.0.4.tgz",
+      "integrity": "sha512-tkAQEw8ysMzmkhgw8k+1U/iPhWNhykKnSk4Rd5zLoPJCuJaGRPo6YposrZgaxHKzDHdDWWZvE/Sk7hsL2X/CpQ==",
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-      "dependencies": {
-        "aggregate-error": "^3.0.0"
-      },
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-        "node": ">=10"
+        "node": ">=18"
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       "funding": {
         "url": "https://github.com/sponsors/sindresorhus"
@@ -1989,16 +1868,6 @@
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-      "dev": true,
-      "license": "MIT",
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@@ -2030,13 +1899,16 @@
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+      "version": "6.0.0",
+      "resolved": "https://registry.npmjs.org/path-type/-/path-type-6.0.0.tgz",
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       "dev": true,
       "license": "MIT",
       "engines": {
-        "node": ">=8"
+        "node": ">=18"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/sindresorhus"
       }
     },
     "node_modules/picomatch": {
@@ -2108,6 +1980,19 @@
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+    "node_modules/presentable-error": {
+      "version": "0.0.1",
+      "resolved": "https://registry.npmjs.org/presentable-error/-/presentable-error-0.0.1.tgz",
+      "integrity": "sha512-E6rsNU1QNJgB3sjj7OANinGncFKuK+164sLXw1/CqBjj/EkXSoSdHCtWQGBNlREIGLnL7IEUEGa08YFVUbrhVg==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=16"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/sindresorhus"
+      }
+    },
     "node_modules/process-nextick-args": {
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@@ -2293,23 +2178,6 @@
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-      "deprecated": "Rimraf versions prior to v4 are no longer supported",
-      "dev": true,
-      "license": "ISC",
-      "dependencies": {
-        "glob": "^7.1.3"
-      },
-      "bin": {
-        "rimraf": "bin.js"
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-      "funding": {
-        "url": "https://github.com/sponsors/isaacs"
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@@ -2387,13 +2255,16 @@
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-      "version": "3.0.0",
-      "resolved": "https://registry.npmjs.org/slash/-/slash-3.0.0.tgz",
-      "integrity": "sha512-g9Q1haeby36OSStwb4ntCGGGaKsaVSjQ68fBxoQcutl5fS1vuY18H3wSt3jFyFtrkx+Kz0V1G85A4MyAdDMi2Q==",
+      "version": "5.1.0",
+      "resolved": "https://registry.npmjs.org/slash/-/slash-5.1.0.tgz",
+      "integrity": "sha512-ZA6oR3T/pEyuqwMgAKT0/hAv8oAXckzbkmR0UkUosQ+Mc4RxGoJkRmwHgHufaenlyAgE1Mxgpdcrf75y6XcnDg==",
       "dev": true,
       "license": "MIT",
       "engines": {
-        "node": ">=8"
+        "node": ">=14.16"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/sindresorhus"
       }
     },
     "node_modules/source-map": {
@@ -2651,6 +2522,19 @@
       "dev": true,
       "license": "MIT"
     },
+    "node_modules/unicorn-magic": {
+      "version": "0.3.0",
+      "resolved": "https://registry.npmjs.org/unicorn-magic/-/unicorn-magic-0.3.0.tgz",
+      "integrity": "sha512-+QBBXBCvifc56fsbuxZQ6Sic3wqqc3WWaqxs58gvJrcOuN83HGTCwz3oS5phzU9LthRNE9VrJCFCLUgHeeFnfA==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=18"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/sindresorhus"
+      }
+    },
     "node_modules/util-deprecate": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/util-deprecate/-/util-deprecate-1.0.2.tgz",
diff --git a/package.json b/package.json
index 85e736d..b156fef 100644
--- a/package.json
+++ b/package.json
@@ -14,7 +14,7 @@
   "author": "Johan Cwiklinski <johan AT x-tnd DOT be>",
   "license": "GPL-3.0-or-later",
   "devDependencies": {
-    "del": "^6.1.1",
+    "del": "^8.0.1",
     "gulp": "^5.0.1",
     "gulp-clean-css": "^4.3.0",
     "gulp-concat": "^2.6.1",