diff --git a/packages/web-component-tester/package-lock.json b/packages/web-component-tester/package-lock.json
index 27a5b8a04..86de65dbe 100644
--- a/packages/web-component-tester/package-lock.json
+++ b/packages/web-component-tester/package-lock.json
@@ -1282,12 +1282,6 @@
 				"uri-js": "^4.2.2"
 			}
 		},
-		"amdefine": {
-			"version": "1.0.1",
-			"resolved": "https://registry.npmjs.org/amdefine/-/amdefine-1.0.1.tgz",
-			"integrity": "sha1-SlKCrBZHKek2Gbz9OtFR+BfOkfU=",
-			"dev": true
-		},
 		"ansi-align": {
 			"version": "2.0.0",
 			"resolved": "https://registry.npmjs.org/ansi-align/-/ansi-align-2.0.0.tgz",
@@ -9424,39 +9418,20 @@
 			}
 		},
 		"rollup": {
-			"version": "0.25.8",
-			"resolved": "https://registry.npmjs.org/rollup/-/rollup-0.25.8.tgz",
-			"integrity": "sha1-v2zoO4dRDRY0Ru6qV37WpvxYNeA=",
+			"version": "3.29.5",
+			"resolved": "https://registry.npmjs.org/rollup/-/rollup-3.29.5.tgz",
+			"integrity": "sha512-GVsDdsbJzzy4S/v3dqWPJ7EfvZJfCHiDqe80IyrF59LYuP+e6U1LJoUqeuqRbwAWoMNoXivMNeNAOf5E22VA1w==",
 			"dev": true,
 			"requires": {
-				"chalk": "^1.1.1",
-				"minimist": "^1.2.0",
-				"source-map-support": "^0.3.2"
+				"fsevents": "~2.3.2"
 			},
 			"dependencies": {
-				"minimist": {
-					"version": "1.2.0",
-					"resolved": "https://registry.npmjs.org/minimist/-/minimist-1.2.0.tgz",
-					"integrity": "sha1-o1AIsg9BOD7sH7kU9M1d95omQoQ=",
-					"dev": true
-				},
-				"source-map": {
-					"version": "0.1.32",
-					"resolved": "https://registry.npmjs.org/source-map/-/source-map-0.1.32.tgz",
-					"integrity": "sha1-yLbBZ3l7pHQKjqMyUhYv8IWRsmY=",
+				"fsevents": {
+					"version": "2.3.3",
+					"resolved": "https://registry.npmjs.org/fsevents/-/fsevents-2.3.3.tgz",
+					"integrity": "sha512-5xoDfX+fL7faATnagmWPpbFtwh/R77WmMMqqHGS65C3vvB0YHrgF+B1YmZ3441tMj5n63k0212XNoJwzlhffQw==",
 					"dev": true,
-					"requires": {
-						"amdefine": ">=0.0.4"
-					}
-				},
-				"source-map-support": {
-					"version": "0.3.3",
-					"resolved": "https://registry.npmjs.org/source-map-support/-/source-map-support-0.3.3.tgz",
-					"integrity": "sha1-NJAJd9W6PwfHdX7nLnO7GptTdU8=",
-					"dev": true,
-					"requires": {
-						"source-map": "0.1.32"
-					}
+					"optional": true
 				}
 			}
 		},
diff --git a/packages/web-component-tester/package.json b/packages/web-component-tester/package.json
index a3b3f5e49..c9a75a8eb 100644
--- a/packages/web-component-tester/package.json
+++ b/packages/web-component-tester/package.json
@@ -112,7 +112,7 @@
     "gulp-tslint": "^8.1.2",
     "gulp-typescript": "^3.1.2",
     "rimraf": "^2.5.4",
-    "rollup": "^0.25.1",
+    "rollup": "^3.29.5",
     "source-map-support": "^0.5.4",
     "watch": "^0.18.0",
     "wct-local": "^2.1.1",