diff --git a/package-lock.json b/package-lock.json
index 4f3e1eac..4eb7516e 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -4150,6 +4150,32 @@
 				"url": "https://github.com/sponsors/fb55"
 			}
 		},
+		"node_modules/cheerio/node_modules/entities": {
+			"version": "6.0.1",
+			"resolved": "https://registry.npmjs.org/entities/-/entities-6.0.1.tgz",
+			"integrity": "sha512-aN97NXWF6AWBTahfVOIrB/NShkzi5H7F9r1s9mD3cDj4Ko5f2qhhVoYMibXF7GlLveb/D2ioWay8lxI97Ven3g==",
+			"dev": true,
+			"license": "BSD-2-Clause",
+			"engines": {
+				"node": ">=0.12"
+			},
+			"funding": {
+				"url": "https://github.com/fb55/entities?sponsor=1"
+			}
+		},
+		"node_modules/cheerio/node_modules/parse5": {
+			"version": "7.3.0",
+			"resolved": "https://registry.npmjs.org/parse5/-/parse5-7.3.0.tgz",
+			"integrity": "sha512-IInvU7fabl34qmi9gY8XOVxhYyMyuH2xUNpb2q8/Y+7552KlejkRvqvD19nMoUW/uQGGbqNpA6Tufu5FL5BZgw==",
+			"dev": true,
+			"license": "MIT",
+			"dependencies": {
+				"entities": "^6.0.0"
+			},
+			"funding": {
+				"url": "https://github.com/inikulin/parse5?sponsor=1"
+			}
+		},
 		"node_modules/chokidar": {
 			"version": "3.5.3",
 			"dev": true,
@@ -4913,6 +4939,7 @@
 		},
 		"node_modules/entities": {
 			"version": "4.5.0",
+			"dev": true,
 			"license": "BSD-2-Clause",
 			"engines": {
 				"node": ">=0.12"
@@ -8586,10 +8613,12 @@
 			}
 		},
 		"node_modules/parse5": {
-			"version": "7.2.1",
+			"version": "8.0.0",
+			"resolved": "https://registry.npmjs.org/parse5/-/parse5-8.0.0.tgz",
+			"integrity": "sha512-9m4m5GSgXjL4AjumKzq1Fgfp3Z8rsvjRNbnkVwfu2ImRqE5D0LnY2QfDen18FSY9C573YU5XxSapdHZTZ2WolA==",
 			"license": "MIT",
 			"dependencies": {
-				"entities": "^4.5.0"
+				"entities": "^6.0.0"
 			},
 			"funding": {
 				"url": "https://github.com/inikulin/parse5?sponsor=1"
@@ -8607,6 +8636,32 @@
 				"url": "https://github.com/inikulin/parse5?sponsor=1"
 			}
 		},
+		"node_modules/parse5-htmlparser2-tree-adapter/node_modules/entities": {
+			"version": "6.0.1",
+			"resolved": "https://registry.npmjs.org/entities/-/entities-6.0.1.tgz",
+			"integrity": "sha512-aN97NXWF6AWBTahfVOIrB/NShkzi5H7F9r1s9mD3cDj4Ko5f2qhhVoYMibXF7GlLveb/D2ioWay8lxI97Ven3g==",
+			"dev": true,
+			"license": "BSD-2-Clause",
+			"engines": {
+				"node": ">=0.12"
+			},
+			"funding": {
+				"url": "https://github.com/fb55/entities?sponsor=1"
+			}
+		},
+		"node_modules/parse5-htmlparser2-tree-adapter/node_modules/parse5": {
+			"version": "7.3.0",
+			"resolved": "https://registry.npmjs.org/parse5/-/parse5-7.3.0.tgz",
+			"integrity": "sha512-IInvU7fabl34qmi9gY8XOVxhYyMyuH2xUNpb2q8/Y+7552KlejkRvqvD19nMoUW/uQGGbqNpA6Tufu5FL5BZgw==",
+			"dev": true,
+			"license": "MIT",
+			"dependencies": {
+				"entities": "^6.0.0"
+			},
+			"funding": {
+				"url": "https://github.com/inikulin/parse5?sponsor=1"
+			}
+		},
 		"node_modules/parse5-parser-stream": {
 			"version": "7.1.2",
 			"dev": true,
@@ -8618,6 +8673,44 @@
 				"url": "https://github.com/inikulin/parse5?sponsor=1"
 			}
 		},
+		"node_modules/parse5-parser-stream/node_modules/entities": {
+			"version": "6.0.1",
+			"resolved": "https://registry.npmjs.org/entities/-/entities-6.0.1.tgz",
+			"integrity": "sha512-aN97NXWF6AWBTahfVOIrB/NShkzi5H7F9r1s9mD3cDj4Ko5f2qhhVoYMibXF7GlLveb/D2ioWay8lxI97Ven3g==",
+			"dev": true,
+			"license": "BSD-2-Clause",
+			"engines": {
+				"node": ">=0.12"
+			},
+			"funding": {
+				"url": "https://github.com/fb55/entities?sponsor=1"
+			}
+		},
+		"node_modules/parse5-parser-stream/node_modules/parse5": {
+			"version": "7.3.0",
+			"resolved": "https://registry.npmjs.org/parse5/-/parse5-7.3.0.tgz",
+			"integrity": "sha512-IInvU7fabl34qmi9gY8XOVxhYyMyuH2xUNpb2q8/Y+7552KlejkRvqvD19nMoUW/uQGGbqNpA6Tufu5FL5BZgw==",
+			"dev": true,
+			"license": "MIT",
+			"dependencies": {
+				"entities": "^6.0.0"
+			},
+			"funding": {
+				"url": "https://github.com/inikulin/parse5?sponsor=1"
+			}
+		},
+		"node_modules/parse5/node_modules/entities": {
+			"version": "6.0.1",
+			"resolved": "https://registry.npmjs.org/entities/-/entities-6.0.1.tgz",
+			"integrity": "sha512-aN97NXWF6AWBTahfVOIrB/NShkzi5H7F9r1s9mD3cDj4Ko5f2qhhVoYMibXF7GlLveb/D2ioWay8lxI97Ven3g==",
+			"license": "BSD-2-Clause",
+			"engines": {
+				"node": ">=0.12"
+			},
+			"funding": {
+				"url": "https://github.com/fb55/entities?sponsor=1"
+			}
+		},
 		"node_modules/path-exists": {
 			"version": "4.0.0",
 			"resolved": "https://registry.npmjs.org/path-exists/-/path-exists-4.0.0.tgz",
@@ -11413,7 +11506,7 @@
 				"chalk": "^5.4.0",
 				"didyoumean2": "7.0.4",
 				"fast-glob": "^3.2.11",
-				"parse5": "7.2.1",
+				"parse5": "8.0.0",
 				"ts-simple-type": "~2.0.0-next.0",
 				"vscode-css-languageservice": "6.3.7",
 				"vscode-html-languageservice": "5.5.1"
diff --git a/packages/lit-analyzer/package.json b/packages/lit-analyzer/package.json
index 2042df00..370a66f8 100644
--- a/packages/lit-analyzer/package.json
+++ b/packages/lit-analyzer/package.json
@@ -94,7 +94,7 @@
 		"chalk": "^5.4.0",
 		"didyoumean2": "7.0.4",
 		"fast-glob": "^3.2.11",
-		"parse5": "7.2.1",
+		"parse5": "8.0.0",
 		"ts-simple-type": "~2.0.0-next.0",
 		"vscode-css-languageservice": "6.3.7",
 		"vscode-html-languageservice": "5.5.1",