diff --git a/package-lock.json b/package-lock.json
index ff7e83af29..fb79c7a29d 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -28,7 +28,7 @@
 				"dialog-polyfill": "^0.5.6",
 				"dropzone": "^6.0.0-beta.2",
 				"eleventy-plugin-nesting-toc": "^1.3.0",
-				"happy-dom": "^10.11.2",
+				"happy-dom": "^15.10.2",
 				"jsdom": "^23.0.0",
 				"nodemon": "^3.1.7",
 				"ramda": "^0.28.0",
@@ -17945,11 +17945,6 @@
 				"url": "https://github.com/sponsors/fb55"
 			}
 		},
-		"node_modules/css.escape": {
-			"version": "1.5.1",
-			"resolved": "https://registry.npmjs.org/css.escape/-/css.escape-1.5.1.tgz",
-			"integrity": "sha512-YUifsXXuknHlUsmlgyY0PKzgPOr7/FjCePfHNt0jxm83wHZi44VDMQ7/fGNkjY3/jV1MC+1CmZbaHzugyeRtpg=="
-		},
 		"node_modules/cssesc": {
 			"version": "3.0.0",
 			"resolved": "https://registry.npmjs.org/cssesc/-/cssesc-3.0.0.tgz",
@@ -21911,16 +21906,16 @@
 			}
 		},
 		"node_modules/happy-dom": {
-			"version": "10.11.2",
-			"resolved": "https://registry.npmjs.org/happy-dom/-/happy-dom-10.11.2.tgz",
-			"integrity": "sha512-rzgmLjLkhyaOdFEyU8CWXzbgyCyM7wJHLqhaoeEVSTyur1fjcUaiNTHx+D4CPaLvx16tGy+SBPd9TVnP/kzL3w==",
+			"version": "15.10.2",
+			"resolved": "https://registry.npmjs.org/happy-dom/-/happy-dom-15.10.2.tgz",
+			"integrity": "sha512-NbA5XrSovenJIIcfixCREX3ZnV7yHP4phhbfuxxf4CPn+LZpz/jIM9EqJ2DrPwgVDSMoAKH3pZwQvkbsSiCrUw==",
 			"dependencies": {
-				"css.escape": "^1.5.1",
 				"entities": "^4.5.0",
-				"iconv-lite": "^0.6.3",
 				"webidl-conversions": "^7.0.0",
-				"whatwg-encoding": "^2.0.0",
 				"whatwg-mimetype": "^3.0.0"
+			},
+			"engines": {
+				"node": ">=18.0.0"
 			}
 		},
 		"node_modules/happy-dom/node_modules/entities": {
@@ -21934,17 +21929,6 @@
 				"url": "https://github.com/fb55/entities?sponsor=1"
 			}
 		},
-		"node_modules/happy-dom/node_modules/iconv-lite": {
-			"version": "0.6.3",
-			"resolved": "https://registry.npmjs.org/iconv-lite/-/iconv-lite-0.6.3.tgz",
-			"integrity": "sha512-4fCk79wshMdzMp2rH06qWrJE4iolqLhCUH+OiuIgU++RB0+94NlDL81atO7GX55uUKueo0txHNtvEyI6D7WdMw==",
-			"dependencies": {
-				"safer-buffer": ">= 2.1.2 < 3.0.0"
-			},
-			"engines": {
-				"node": ">=0.10.0"
-			}
-		},
 		"node_modules/hard-rejection": {
 			"version": "2.1.0",
 			"resolved": "https://registry.npmjs.org/hard-rejection/-/hard-rejection-2.1.0.tgz",
@@ -36594,6 +36578,7 @@
 			"version": "2.0.0",
 			"resolved": "https://registry.npmjs.org/whatwg-encoding/-/whatwg-encoding-2.0.0.tgz",
 			"integrity": "sha512-p41ogyeMUrw3jWclHWTQg1k05DSVXPLcVxRTYsXUk+ZooOCZLcoYgPZ/HL/D/N+uQPOtcp1me1WhBEaX02mhWg==",
+			"dev": true,
 			"dependencies": {
 				"iconv-lite": "0.6.3"
 			},
@@ -36605,6 +36590,7 @@
 			"version": "0.6.3",
 			"resolved": "https://registry.npmjs.org/iconv-lite/-/iconv-lite-0.6.3.tgz",
 			"integrity": "sha512-4fCk79wshMdzMp2rH06qWrJE4iolqLhCUH+OiuIgU++RB0+94NlDL81atO7GX55uUKueo0txHNtvEyI6D7WdMw==",
+			"dev": true,
 			"dependencies": {
 				"safer-buffer": ">= 2.1.2 < 3.0.0"
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@@ -48988,11 +48974,6 @@
 			"resolved": "https://registry.npmjs.org/css-what/-/css-what-6.1.0.tgz",
 			"integrity": "sha512-HTUrgRJ7r4dsZKU6GjmpfRK1O76h97Z8MfS1G0FozR+oF2kG6Vfe8JE6zwrkbxigziPHinCJ+gCPjA9EaBDtRw=="
 		},
-		"css.escape": {
-			"version": "1.5.1",
-			"resolved": "https://registry.npmjs.org/css.escape/-/css.escape-1.5.1.tgz",
-			"integrity": "sha512-YUifsXXuknHlUsmlgyY0PKzgPOr7/FjCePfHNt0jxm83wHZi44VDMQ7/fGNkjY3/jV1MC+1CmZbaHzugyeRtpg=="
-		},
 		"cssesc": {
 			"version": "3.0.0",
 			"resolved": "https://registry.npmjs.org/cssesc/-/cssesc-3.0.0.tgz",
@@ -52070,15 +52051,12 @@
 			}
 		},
 		"happy-dom": {
-			"version": "10.11.2",
-			"resolved": "https://registry.npmjs.org/happy-dom/-/happy-dom-10.11.2.tgz",
-			"integrity": "sha512-rzgmLjLkhyaOdFEyU8CWXzbgyCyM7wJHLqhaoeEVSTyur1fjcUaiNTHx+D4CPaLvx16tGy+SBPd9TVnP/kzL3w==",
+			"version": "15.10.2",
+			"resolved": "https://registry.npmjs.org/happy-dom/-/happy-dom-15.10.2.tgz",
+			"integrity": "sha512-NbA5XrSovenJIIcfixCREX3ZnV7yHP4phhbfuxxf4CPn+LZpz/jIM9EqJ2DrPwgVDSMoAKH3pZwQvkbsSiCrUw==",
 			"requires": {
-				"css.escape": "^1.5.1",
 				"entities": "^4.5.0",
-				"iconv-lite": "^0.6.3",
 				"webidl-conversions": "^7.0.0",
-				"whatwg-encoding": "^2.0.0",
 				"whatwg-mimetype": "^3.0.0"
 			},
 			"dependencies": {
@@ -52086,14 +52064,6 @@
 					"version": "4.5.0",
 					"resolved": "https://registry.npmjs.org/entities/-/entities-4.5.0.tgz",
 					"integrity": "sha512-V0hjH4dGPh9Ao5p0MoRY6BVqtwCjhz6vI5LT8AJ55H+4g9/4vbHx1I54fS0XuclLhDHArPQCiMjDxjaL8fPxhw=="
-				},
-				"iconv-lite": {
-					"version": "0.6.3",
-					"resolved": "https://registry.npmjs.org/iconv-lite/-/iconv-lite-0.6.3.tgz",
-					"integrity": "sha512-4fCk79wshMdzMp2rH06qWrJE4iolqLhCUH+OiuIgU++RB0+94NlDL81atO7GX55uUKueo0txHNtvEyI6D7WdMw==",
-					"requires": {
-						"safer-buffer": ">= 2.1.2 < 3.0.0"
-					}
 				}
 			}
 		},
@@ -63254,6 +63224,7 @@
 			"version": "2.0.0",
 			"resolved": "https://registry.npmjs.org/whatwg-encoding/-/whatwg-encoding-2.0.0.tgz",
 			"integrity": "sha512-p41ogyeMUrw3jWclHWTQg1k05DSVXPLcVxRTYsXUk+ZooOCZLcoYgPZ/HL/D/N+uQPOtcp1me1WhBEaX02mhWg==",
+			"dev": true,
 			"requires": {
 				"iconv-lite": "0.6.3"
 			},
@@ -63262,6 +63233,7 @@
 					"version": "0.6.3",
 					"resolved": "https://registry.npmjs.org/iconv-lite/-/iconv-lite-0.6.3.tgz",
 					"integrity": "sha512-4fCk79wshMdzMp2rH06qWrJE4iolqLhCUH+OiuIgU++RB0+94NlDL81atO7GX55uUKueo0txHNtvEyI6D7WdMw==",
+					"dev": true,
 					"requires": {
 						"safer-buffer": ">= 2.1.2 < 3.0.0"
 					}
diff --git a/package.json b/package.json
index 22a9a210c6..e6078dcc0b 100644
--- a/package.json
+++ b/package.json
@@ -27,7 +27,7 @@
 		"dialog-polyfill": "^0.5.6",
 		"dropzone": "^6.0.0-beta.2",
 		"eleventy-plugin-nesting-toc": "^1.3.0",
-		"happy-dom": "^10.11.2",
+		"happy-dom": "^15.10.2",
 		"jsdom": "^23.0.0",
 		"nodemon": "^3.1.7",
 		"ramda": "^0.28.0",