diff --git a/package-lock.json b/package-lock.json
index c5be0619a4..8f26377f7a 100644
--- a/package-lock.json
+++ b/package-lock.json
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     "wct-local": {
-      "version": "2.1.3",
-      "resolved": "https://registry.npmjs.org/wct-local/-/wct-local-2.1.3.tgz",
-      "integrity": "sha512-pOGyT07Bh6TAJVk7E3P+n5RybjtYBqm745fCfY5vuhQd069mN1WUlivMgZzWfJuvuXVpKFkAERrN/+tTjbmgmQ==",
+      "version": "2.1.4",
+      "resolved": "https://registry.npmjs.org/wct-local/-/wct-local-2.1.4.tgz",
+      "integrity": "sha512-nj8cH/WaDy3PGu0L9ygoBNh7c2wC8V2agMbF0Jpy6+vSH98fiZynSpMBHeZ3Y8ehbKQPyVNC8LLUqjhipHC01w==",
       "dev": true,
       "optional": true,
       "requires": {
@@ -10040,9 +10170,9 @@
       }
     },
     "wct-mocha": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/wct-mocha/-/wct-mocha-1.0.0.tgz",
-      "integrity": "sha512-rvDjW4kJMV8/lpihKMDHMZwycT5ALtoLni/Q0Ggdg1rPRpIW5pjoslSR/UIl2gWRMYqAs9nFRVYxASwEYG6brA==",
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/wct-mocha/-/wct-mocha-1.0.1.tgz",
+      "integrity": "sha512-7k4krdiFcODjdo9uAxHDNpFm8AwFZUhKdUXMIdoJZzF6NHq3aONrvv/uPYvTDGYZxap4mEO53kSl/RDKIv8b8g==",
       "dev": true
     },
     "wct-sauce": {
@@ -10290,15 +10420,15 @@
           }
         },
         "ms": {
-          "version": "2.1.1",
-          "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.1.tgz",
-          "integrity": "sha512-tgp+dl5cGk28utYktBsrFqA7HKgrhgPsg6Z/EfhWI4gl1Hwq8B/GmY/0oXZ6nF8hDVesS/FpnYaD/kOWhYQvyg==",
+          "version": "2.1.2",
+          "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.2.tgz",
+          "integrity": "sha512-sGkPx+VjMtmA6MX27oA4FBFELFCZZ4S4XqeGOXCv68tT+jb3vk/RyaKWP0PTKyWtmLSM0b+adUTEvbs1PEaH2w==",
           "dev": true
         },
         "readable-stream": {
-          "version": "3.3.0",
-          "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-3.3.0.tgz",
-          "integrity": "sha512-EsI+s3k3XsW+fU8fQACLN59ky34AZ14LoeVZpYwmZvldCFo0r0gnelwF2TcMjLor/BTL5aDJVBMkss0dthToPw==",
+          "version": "3.4.0",
+          "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-3.4.0.tgz",
+          "integrity": "sha512-jItXPLmrSR8jmTRmRWJXCnGJsfy85mB3Wd/uINMXA65yrnFo0cPClFIUWzo2najVNSl+mx7/4W8ttlLWJe99pQ==",
           "dev": true,
           "requires": {
             "inherits": "^2.0.3",
@@ -10349,9 +10479,9 @@
       "dev": true
     },
     "write-file-atomic": {
-      "version": "2.4.2",
-      "resolved": "https://registry.npmjs.org/write-file-atomic/-/write-file-atomic-2.4.2.tgz",
-      "integrity": "sha512-s0b6vB3xIVRLWywa6X9TOMA7k9zio0TMOsl9ZnDkliA/cfJlpHXAscj0gbHVJiTdIuAYpIyqS5GW91fqm6gG5g==",
+      "version": "2.4.3",
+      "resolved": "https://registry.npmjs.org/write-file-atomic/-/write-file-atomic-2.4.3.tgz",
+      "integrity": "sha512-GaETH5wwsX+GcnzhPgKcKjJ6M2Cq3/iZp1WyY/X1CSqrW+jVNM9Y7D8EC2sM4ZG/V8wZlSniJnCKWPmBYAucRQ==",
       "dev": true,
       "requires": {
         "graceful-fs": "^4.1.11",
diff --git a/package.json b/package.json
index 9296d113bd..bf0a788e40 100644
--- a/package.json
+++ b/package.json
@@ -39,7 +39,7 @@
     "@webcomponents/webcomponentsjs": "^2.0.4",
     "chai": "^4.1.2",
     "clang-format": "^1.2.4",
-    "lit-html-benchmarks": "^0.2.0",
+    "lit-html-benchmarks": "^0.2.1",
     "mocha": "^5.2.0",
     "rollup": "^0.64.1",
     "rollup-plugin-filesize": "^4.0.1",
diff --git a/src/lib/shady-render.ts b/src/lib/shady-render.ts
index ddde69a24d..f8440d8d7c 100644
--- a/src/lib/shady-render.ts
+++ b/src/lib/shady-render.ts
@@ -190,7 +190,7 @@ const prepareTemplateStyles =
         // NOTE, ShadyCSS creates its own style so we can safely add/remove
         // `condensedStyle` here.
         content.insertBefore(condensedStyle, content.firstChild);
-        const removes = new Set();
+        const removes = new Set<Node>();
         removes.add(condensedStyle);
         removeNodesFromTemplate(template, removes);
       }
diff --git a/src/test/lib/modify-template_test.ts b/src/test/lib/modify-template_test.ts
index 0e1c0825ff..edd8da7d71 100644
--- a/src/test/lib/modify-template_test.ts
+++ b/src/test/lib/modify-template_test.ts
@@ -100,7 +100,7 @@ suite('add/remove nodes from template', () => {
         </div><div name="remove"><span name="remove"><span name="remove">remove</span></span></div>`;
         const result = getResult('bar', 'baz', 'qux');
         const template = templateFactory(result);
-        const nodeSet = new Set();
+        const nodeSet = new Set<Node>();
         const nodesToRemove =
             template.element.content.querySelectorAll('[name="remove"]');
         for (const node of Array.from(nodesToRemove)) {
@@ -132,7 +132,7 @@ suite('add/remove nodes from template', () => {
         </div><div name="remove"><span name="remove"><span name="remove">remove</span></span></div>`;
         const result = getResult('bar', 'baz', 'qux', 'r1', 'r2', 'r3');
         const template = templateFactory(result);
-        const nodeSet = new Set();
+        const nodeSet = new Set<Node>();
         const nodesToRemove =
             template.element.content.querySelectorAll('[name="remove"]');
         for (const node of Array.from(nodesToRemove)) {
@@ -167,7 +167,7 @@ suite('add/remove nodes from template', () => {
         let node;
         while (node =
                    template.element.content.querySelector('[name="remove"]')) {
-          const nodeSet = new Set();
+          const nodeSet = new Set<Node>();
           nodeSet.add(node);
           removeNodesFromTemplate(template, nodeSet);
         }