diff --git a/iron-button-state.d.ts b/iron-button-state.d.ts
index e5d5948..9a231cb 100644
--- a/iron-button-state.d.ts
+++ b/iron-button-state.d.ts
@@ -52,36 +52,36 @@ declare namespace Polymer {
      */
     ariaActiveAttribute: string|null|undefined;
     _mouseEventRe: RegExp|null;
-    _tapHandler(): any;
-    _focusChanged(focused: any): any;
-    _detectKeyboardFocus(focused: any): any;
+    _tapHandler(): void;
+    _focusChanged(focused: any): void;
+    _detectKeyboardFocus(focused: any): void;
 
     /**
      * 'change' events
      */
-    _userActivate(active: any): any;
-    _downHandler(event: any): any;
-    _upHandler(): any;
+    _userActivate(active: any): void;
+    _downHandler(event: any): void;
+    _upHandler(): void;
 
     /**
      * @param event .
      */
-    _spaceKeyDownHandler(event: KeyboardEvent): any;
+    _spaceKeyDownHandler(event: KeyboardEvent): void;
 
     /**
      * @param event .
      */
-    _spaceKeyUpHandler(event: KeyboardEvent): any;
+    _spaceKeyUpHandler(event: KeyboardEvent): void;
 
     /**
      * event handler to unwind before triggering another event
      */
-    _asyncClick(): any;
-    _pressedChanged(pressed: any): any;
-    _ariaActiveAttributeChanged(value: any, oldValue: any): any;
-    _activeChanged(active: any, ariaActiveAttribute: any): any;
-    _controlStateChanged(): any;
-    _changedButtonState(): any;
+    _asyncClick(): void;
+    _pressedChanged(pressed: any): void;
+    _ariaActiveAttributeChanged(value: any, oldValue: any): void;
+    _activeChanged(active: any, ariaActiveAttribute: any): void;
+    _controlStateChanged(): void;
+    _changedButtonState(): void;
   }
 
   const IronButtonState: object;
diff --git a/iron-control-state.d.ts b/iron-control-state.d.ts
index 75ebfb9..f04357f 100644
--- a/iron-control-state.d.ts
+++ b/iron-control-state.d.ts
@@ -26,9 +26,9 @@ declare namespace Polymer {
     _oldTabIndex: number|null|undefined;
     _boundFocusBlurHandler: Function|null|undefined;
     ready(): void;
-    _focusBlurHandler(event: any): any;
-    _disabledChanged(disabled: any, old: any): any;
-    _changedControlState(): any;
+    _focusBlurHandler(event: any): void;
+    _disabledChanged(disabled: any, old: any): void;
+    _changedControlState(): void;
   }
 
   const IronControlState: object;
diff --git a/package-lock.json b/package-lock.json
index ccf8274..fcd0a62 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -4,9 +4,9 @@
   "lockfileVersion": 1,
   "dependencies": {
     "@polymer/gen-typescript-declarations": {
-      "version": "1.1.3",
-      "resolved": "https://registry.npmjs.org/@polymer/gen-typescript-declarations/-/gen-typescript-declarations-1.1.3.tgz",
-      "integrity": "sha512-NJriR/H/Jsc0XV0sBSNRn85jl4p0RUkX4fJCHqOfcjJY/9X360vpKXLeYdwvdF6bu0PuBsEsntsTxiEFsPFAZw==",
+      "version": "1.2.0",
+      "resolved": "https://registry.npmjs.org/@polymer/gen-typescript-declarations/-/gen-typescript-declarations-1.2.0.tgz",
+      "integrity": "sha512-a5DFXI3TdZSVOMH4608LVaBLmcr+mwM2+B8OSBiB9WFNCtdqzUXwtB5We6vBzrThXlO4uRo7d2pEqjNXMAlEkA==",
       "dev": true,
       "requires": {
         "@types/doctrine": "0.0.3",
@@ -19,7 +19,7 @@
         "fs-extra": "5.0.0",
         "glob": "7.1.2",
         "minimatch": "3.0.4",
-        "polymer-analyzer": "3.0.0-pre.10"
+        "polymer-analyzer": "3.0.0-pre.12"
       }
     },
     "@types/babel-generator": {
@@ -106,7 +106,7 @@
       "integrity": "sha512-qtxDULQKUenuaDLW003CgC+0T0eiAfH3BrH+vSt87GLzbz5EZ6Ox6mv9rMttvhDOatbb9nYh0E1m7ydoYwUrAg==",
       "dev": true,
       "requires": {
-        "@types/node": "9.4.5"
+        "@types/node": "9.4.6"
       }
     },
     "@types/glob": {
@@ -117,7 +117,7 @@
       "requires": {
         "@types/events": "1.1.0",
         "@types/minimatch": "3.0.3",
-        "@types/node": "9.4.5"
+        "@types/node": "9.4.6"
       }
     },
     "@types/minimatch": {
@@ -127,9 +127,9 @@
       "dev": true
     },
     "@types/node": {
-      "version": "9.4.5",
-      "resolved": "https://registry.npmjs.org/@types/node/-/node-9.4.5.tgz",
-      "integrity": "sha512-DvC7bzO5797bkApgukxouHmkOdYN2D0yL5olw0RncDpXUa6n39qTVsUi/5g2QJjPgl8qn4zh+4h0sofNoWGLRg==",
+      "version": "9.4.6",
+      "resolved": "https://registry.npmjs.org/@types/node/-/node-9.4.6.tgz",
+      "integrity": "sha512-CTUtLb6WqCCgp6P59QintjHWqzf4VL1uPA27bipLAPxFqrtK1gEYllePzTICGqQ8rYsCbpnsNypXjjDzGAAjEQ==",
       "dev": true
     },
     "@types/parse5": {
@@ -138,7 +138,7 @@
       "integrity": "sha1-44cKEOgnNacg9i1x3NGDunjvOp0=",
       "dev": true,
       "requires": {
-        "@types/node": "9.4.5"
+        "@types/node": "9.4.6"
       }
     },
     "@types/winston": {
@@ -147,7 +147,7 @@
       "integrity": "sha512-QqR0j08RCS1AQYPMRPHikEpcmK+2aEEbcSzWLwOqyJ4FhLmHUx/WjRrnn7tTQg/y4IKnMhzskh/o7qvGIZZ7iA==",
       "dev": true,
       "requires": {
-        "@types/node": "9.4.5"
+        "@types/node": "9.4.6"
       }
     },
     "ansi-escape-sequences": {
@@ -413,24 +413,14 @@
       }
     },
     "dom5": {
-      "version": "2.3.0",
-      "resolved": "https://registry.npmjs.org/dom5/-/dom5-2.3.0.tgz",
-      "integrity": "sha1-+CBJdb0NrLvltYqKk//B/tD/zSo=",
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/dom5/-/dom5-3.0.0.tgz",
+      "integrity": "sha512-PbE+7C4Sh1dHDTLNuSDaMUGD1ivDiSZw0L+a9xVUzUKeQ8w3vdzfKHRA07CxcrFZZOa1SGl2nIJ9T49j63q+bg==",
       "dev": true,
       "requires": {
-        "@types/clone": "0.1.30",
-        "@types/node": "6.0.100",
         "@types/parse5": "2.2.34",
         "clone": "2.1.1",
-        "parse5": "2.2.3"
-      },
-      "dependencies": {
-        "@types/node": {
-          "version": "6.0.100",
-          "resolved": "https://registry.npmjs.org/@types/node/-/node-6.0.100.tgz",
-          "integrity": "sha512-LeTv/2eb37puibsq5982HXkKJBpu7Xc01WaGjEfncb+iE159nYOKkcaCCAsVoXBPD/7jAPdJt4J0+R9bqMndgg==",
-          "dev": true
-        }
+        "parse5": "4.0.0"
       }
     },
     "escape-string-regexp": {
@@ -708,9 +698,9 @@
       }
     },
     "parse5": {
-      "version": "2.2.3",
-      "resolved": "https://registry.npmjs.org/parse5/-/parse5-2.2.3.tgz",
-      "integrity": "sha1-DE/EHBAAxea5PUiwP4CDg3g06fY=",
+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/parse5/-/parse5-4.0.0.tgz",
+      "integrity": "sha512-VrZ7eOd3T1Fk4XWNXMgiGBK/z0MG48BWG2uQNU4I72fkQuKUTZpl+u9k+CxEG0twMVzSmXEEz12z5Fnw1jIQFA==",
       "dev": true
     },
     "path-is-absolute": {
@@ -739,9 +729,9 @@
       }
     },
     "polymer-analyzer": {
-      "version": "3.0.0-pre.10",
-      "resolved": "https://registry.npmjs.org/polymer-analyzer/-/polymer-analyzer-3.0.0-pre.10.tgz",
-      "integrity": "sha1-9vCd15PdL0IomsAdoCb8q6ZfGYw=",
+      "version": "3.0.0-pre.12",
+      "resolved": "https://registry.npmjs.org/polymer-analyzer/-/polymer-analyzer-3.0.0-pre.12.tgz",
+      "integrity": "sha512-QQL70IC85hI6q9uQeresEMcT1Qf8YR/zDe1qG8WWeeFAZk8z0lmzUpsfcAWz+bM4wpDdXrtd4HitIs4p0CHl/w==",
       "dev": true,
       "requires": {
         "@types/babel-generator": "6.25.1",
@@ -754,7 +744,7 @@
         "@types/cssbeautify": "0.3.1",
         "@types/doctrine": "0.0.1",
         "@types/minimatch": "3.0.3",
-        "@types/node": "6.0.100",
+        "@types/node": "6.0.101",
         "@types/parse5": "2.2.34",
         "babel-generator": "6.26.1",
         "babel-traverse": "6.26.0",
@@ -764,11 +754,11 @@
         "clone": "2.1.1",
         "cssbeautify": "0.3.1",
         "doctrine": "2.1.0",
-        "dom5": "2.3.0",
+        "dom5": "3.0.0",
         "indent": "0.0.2",
         "jsonschema": "1.2.2",
         "minimatch": "3.0.4",
-        "parse5": "2.2.3",
+        "parse5": "4.0.0",
         "polymer-project-config": "3.8.1",
         "shady-css-parser": "0.1.0",
         "stable": "0.1.6",
@@ -783,9 +773,9 @@
           "dev": true
         },
         "@types/node": {
-          "version": "6.0.100",
-          "resolved": "https://registry.npmjs.org/@types/node/-/node-6.0.100.tgz",
-          "integrity": "sha512-LeTv/2eb37puibsq5982HXkKJBpu7Xc01WaGjEfncb+iE159nYOKkcaCCAsVoXBPD/7jAPdJt4J0+R9bqMndgg==",
+          "version": "6.0.101",
+          "resolved": "https://registry.npmjs.org/@types/node/-/node-6.0.101.tgz",
+          "integrity": "sha512-IQ7V3D6+kK1DArTqTBrnl3M+YgJZLw8ta8w3Q9xjR79HaJzMAoTbZ8TNzUTztrkCKPTqIstE2exdbs1FzsYLUw==",
           "dev": true
         }
       }
@@ -796,16 +786,16 @@
       "integrity": "sha512-MLvnM9gexFWg7nynY24eHZG6NLXocmk718sVds/sx2CAJ6iihhC0JMhhOIa6jnad9KQrHyGl/cs3mMRaaub5Fg==",
       "dev": true,
       "requires": {
-        "@types/node": "6.0.100",
+        "@types/node": "6.0.101",
         "jsonschema": "1.2.2",
         "minimatch-all": "1.1.0",
         "plylog": "0.5.0"
       },
       "dependencies": {
         "@types/node": {
-          "version": "6.0.100",
-          "resolved": "https://registry.npmjs.org/@types/node/-/node-6.0.100.tgz",
-          "integrity": "sha512-LeTv/2eb37puibsq5982HXkKJBpu7Xc01WaGjEfncb+iE159nYOKkcaCCAsVoXBPD/7jAPdJt4J0+R9bqMndgg==",
+          "version": "6.0.101",
+          "resolved": "https://registry.npmjs.org/@types/node/-/node-6.0.101.tgz",
+          "integrity": "sha512-IQ7V3D6+kK1DArTqTBrnl3M+YgJZLw8ta8w3Q9xjR79HaJzMAoTbZ8TNzUTztrkCKPTqIstE2exdbs1FzsYLUw==",
           "dev": true
         }
       }
diff --git a/package.json b/package.json
index 18ab40a..85ff46c 100644
--- a/package.json
+++ b/package.json
@@ -8,7 +8,7 @@
   },
   "license": "BSD-3-Clause",
   "devDependencies": {
-    "@polymer/gen-typescript-declarations": "^1.1.3",
+    "@polymer/gen-typescript-declarations": "^1.2.0",
     "bower": "^1.8.0"
   },
   "scripts": {