diff --git a/e2e/package-lock.json b/e2e/package-lock.json
index 863d57691..3031bcf57 100644
--- a/e2e/package-lock.json
+++ b/e2e/package-lock.json
@@ -107,7 +107,7 @@
 				"@csstools/pack-test": "*",
 				"@csstools/postcss-bundler": "*",
 				"@csstools/postcss-tape": "*",
-				"@webref/css": "8.4.1"
+				"@webref/css": "8.5.0"
 			},
 			"engines": {
 				"node": ">=20.19.0"
@@ -326,9 +326,9 @@
 			"link": true
 		},
 		"node_modules/@discoveryjs/json-ext": {
-			"version": "0.6.3",
-			"resolved": "https://registry.npmjs.org/@discoveryjs/json-ext/-/json-ext-0.6.3.tgz",
-			"integrity": "sha512-4B4OijXeVNOPZlYA2oEwWOTkzyltLao+xbotHQeqN++Rv27Y6s818+n2Qkp8q+Fxhn0t/5lA5X1Mxktud8eayQ==",
+			"version": "1.0.0",
+			"resolved": "https://registry.npmjs.org/@discoveryjs/json-ext/-/json-ext-1.0.0.tgz",
+			"integrity": "sha512-dDlz3W405VMFO4w5kIP9DOmELBcvFQGmLoKSdIRstBDubKFYwaNHV1NnlzMCQpXQFGWVALmeMORAuiLx18AvZQ==",
 			"license": "MIT",
 			"engines": {
 				"node": ">=14.17.0"
@@ -566,50 +566,6 @@
 				"@xtuc/long": "4.2.2"
 			}
 		},
-		"node_modules/@webpack-cli/configtest": {
-			"version": "3.0.1",
-			"resolved": "https://registry.npmjs.org/@webpack-cli/configtest/-/configtest-3.0.1.tgz",
-			"integrity": "sha512-u8d0pJ5YFgneF/GuvEiDA61Tf1VDomHHYMjv/wc9XzYj7nopltpG96nXN5dJRstxZhcNpV1g+nT6CydO7pHbjA==",
-			"license": "MIT",
-			"engines": {
-				"node": ">=18.12.0"
-			},
-			"peerDependencies": {
-				"webpack": "^5.82.0",
-				"webpack-cli": "6.x.x"
-			}
-		},
-		"node_modules/@webpack-cli/info": {
-			"version": "3.0.1",
-			"resolved": "https://registry.npmjs.org/@webpack-cli/info/-/info-3.0.1.tgz",
-			"integrity": "sha512-coEmDzc2u/ffMvuW9aCjoRzNSPDl/XLuhPdlFRpT9tZHmJ/039az33CE7uH+8s0uL1j5ZNtfdv0HkfaKRBGJsQ==",
-			"license": "MIT",
-			"engines": {
-				"node": ">=18.12.0"
-			},
-			"peerDependencies": {
-				"webpack": "^5.82.0",
-				"webpack-cli": "6.x.x"
-			}
-		},
-		"node_modules/@webpack-cli/serve": {
-			"version": "3.0.1",
-			"resolved": "https://registry.npmjs.org/@webpack-cli/serve/-/serve-3.0.1.tgz",
-			"integrity": "sha512-sbgw03xQaCLiT6gcY/6u3qBDn01CWw/nbaXl3gTdTFuJJ75Gffv3E3DBpgvY2fkkrdS1fpjaXNOmJlnbtKauKg==",
-			"license": "MIT",
-			"engines": {
-				"node": ">=18.12.0"
-			},
-			"peerDependencies": {
-				"webpack": "^5.82.0",
-				"webpack-cli": "6.x.x"
-			},
-			"peerDependenciesMeta": {
-				"webpack-dev-server": {
-					"optional": true
-				}
-			}
-		},
 		"node_modules/@xtuc/ieee754": {
 			"version": "1.2.0",
 			"resolved": "https://registry.npmjs.org/@xtuc/ieee754/-/ieee754-1.2.0.tgz",
@@ -926,12 +882,6 @@
 			"dev": true,
 			"license": "MIT"
 		},
-		"node_modules/colorette": {
-			"version": "2.0.20",
-			"resolved": "https://registry.npmjs.org/colorette/-/colorette-2.0.20.tgz",
-			"integrity": "sha512-IfEDxwoWIjkeXL1eXcDiow4UbKjhLdq6/EuSVR9GMN7KVH3r9gQ83e73hsz1Nd1T3ijd5xv1wcWRYO+D6kCI2w==",
-			"license": "MIT"
-		},
 		"node_modules/commander": {
 			"version": "2.20.3",
 			"resolved": "https://registry.npmjs.org/commander/-/commander-2.20.3.tgz",
@@ -2587,18 +2537,14 @@
 			}
 		},
 		"node_modules/webpack-cli": {
-			"version": "6.0.1",
-			"resolved": "https://registry.npmjs.org/webpack-cli/-/webpack-cli-6.0.1.tgz",
-			"integrity": "sha512-MfwFQ6SfwinsUVi0rNJm7rHZ31GyTcpVE5pgVA3hwFRb7COD4TzjUUwhGWKfO50+xdc2MQPuEBBJoqIMGt3JDw==",
+			"version": "7.0.0",
+			"resolved": "https://registry.npmjs.org/webpack-cli/-/webpack-cli-7.0.0.tgz",
+			"integrity": "sha512-NbM62WodkUPXQGR/Ip3pSFsFUKJSseDIFr2H5Z1+4fHwB9X4cO10knPShIopFqAHZa8a5Q8pdtmtE6C12/mlMQ==",
 			"license": "MIT",
 			"dependencies": {
-				"@discoveryjs/json-ext": "^0.6.1",
-				"@webpack-cli/configtest": "^3.0.1",
-				"@webpack-cli/info": "^3.0.1",
-				"@webpack-cli/serve": "^3.0.1",
-				"colorette": "^2.0.14",
-				"commander": "^12.1.0",
-				"cross-spawn": "^7.0.3",
+				"@discoveryjs/json-ext": "^1.0.0",
+				"commander": "^14.0.3",
+				"cross-spawn": "^7.0.6",
 				"envinfo": "^7.14.0",
 				"fastest-levenshtein": "^1.0.12",
 				"import-local": "^3.0.2",
@@ -2610,14 +2556,16 @@
 				"webpack-cli": "bin/cli.js"
 			},
 			"engines": {
-				"node": ">=18.12.0"
+				"node": ">=20.9.0"
 			},
 			"funding": {
 				"type": "opencollective",
 				"url": "https://opencollective.com/webpack"
 			},
 			"peerDependencies": {
-				"webpack": "^5.82.0"
+				"webpack": "^5.101.0",
+				"webpack-bundle-analyzer": "^4.0.0 || ^5.0.0",
+				"webpack-dev-server": "^5.0.0"
 			},
 			"peerDependenciesMeta": {
 				"webpack-bundle-analyzer": {
@@ -2629,12 +2577,12 @@
 			}
 		},
 		"node_modules/webpack-cli/node_modules/commander": {
-			"version": "12.1.0",
-			"resolved": "https://registry.npmjs.org/commander/-/commander-12.1.0.tgz",
-			"integrity": "sha512-Vw8qHK3bZM9y/P10u3Vib8o/DdkvA2OtPtZvD871QKjy74Wj1WSKFILMPRPSdUSx5RFK1arlJzEtA4PkFgnbuA==",
+			"version": "14.0.3",
+			"resolved": "https://registry.npmjs.org/commander/-/commander-14.0.3.tgz",
+			"integrity": "sha512-H+y0Jo/T1RZ9qPP4Eh1pkcQcLRglraJaSLoyOtHxu6AapkjWVCy2Sit1QQ4x3Dng8qDlSsZEet7g5Pq06MvTgw==",
 			"license": "MIT",
 			"engines": {
-				"node": ">=18"
+				"node": ">=20"
 			}
 		},
 		"node_modules/webpack-merge": {
@@ -2801,7 +2749,7 @@
 				"postcss": "^8.5.8",
 				"postcss-preset-env": "file:../../../plugin-packs/postcss-preset-env",
 				"webpack": "^5.105.4",
-				"webpack-cli": "^6.0.1"
+				"webpack-cli": "^7.0.0"
 			}
 		},
 		"webpack/postcss-loader": {
@@ -2814,7 +2762,7 @@
 				"postcss-preset-env": "file:../../../plugin-packs/postcss-preset-env",
 				"style-loader": "^4.0.0",
 				"webpack": "^5.105.4",
-				"webpack-cli": "^6.0.1"
+				"webpack-cli": "^7.0.0"
 			}
 		}
 	}
diff --git a/e2e/webpack/bundle-through/package.json b/e2e/webpack/bundle-through/package.json
index 90852c6f2..a81fedec2 100644
--- a/e2e/webpack/bundle-through/package.json
+++ b/e2e/webpack/bundle-through/package.json
@@ -11,7 +11,7 @@
 	"dependencies": {
 		"postcss": "^8.5.8",
 		"webpack": "^5.105.4",
-		"webpack-cli": "^6.0.1",
+		"webpack-cli": "^7.0.0",
 		"postcss-preset-env": "file:../../../plugin-packs/postcss-preset-env"
 	},
 	"volta": {
diff --git a/e2e/webpack/postcss-loader/package.json b/e2e/webpack/postcss-loader/package.json
index 1ccb02e75..0f820ee14 100644
--- a/e2e/webpack/postcss-loader/package.json
+++ b/e2e/webpack/postcss-loader/package.json
@@ -10,7 +10,7 @@
 	"dependencies": {
 		"postcss": "^8.5.8",
 		"webpack": "^5.105.4",
-		"webpack-cli": "^6.0.1",
+		"webpack-cli": "^7.0.0",
 		"postcss-loader": "^8.2.1",
 		"style-loader": "^4.0.0",
 		"css-loader": "^7.1.3",