diff --git a/animations/cascaded-animation.d.ts b/animations/cascaded-animation.d.ts
index 2b1a352..5bcd3a0 100644
--- a/animations/cascaded-animation.d.ts
+++ b/animations/cascaded-animation.d.ts
@@ -27,7 +27,7 @@
  * ```
  */
 interface CascadedAnimationElement extends Polymer.Element, Polymer.NeonAnimationBehavior {
-  complete(): any;
+  complete(): void;
   configure(config: {animation: string, nodes: Element[], nodeDelay?: number, timing?: object|null}): any;
 }
 
diff --git a/animations/opaque-animation.d.ts b/animations/opaque-animation.d.ts
index 34afcd8..96c48ec 100644
--- a/animations/opaque-animation.d.ts
+++ b/animations/opaque-animation.d.ts
@@ -16,7 +16,7 @@
  * webkit/safari from drawing a frame before an animation for elements that animate from display:none.
  */
 interface OpaqueAnimationElement extends Polymer.Element, Polymer.NeonAnimationBehavior {
-  complete(config: any): any;
+  complete(config: any): void;
   configure(config: any): any;
 }
 
diff --git a/animations/reverse-ripple-animation.d.ts b/animations/reverse-ripple-animation.d.ts
index 5d7021d..2e2c2e9 100644
--- a/animations/reverse-ripple-animation.d.ts
+++ b/animations/reverse-ripple-animation.d.ts
@@ -33,7 +33,7 @@
  * ```
  */
 interface ReverseRippleAnimationElement extends Polymer.Element, Polymer.NeonSharedElementAnimationBehavior {
-  complete(): any;
+  complete(): void;
   configure(config: any): any;
 }
 
diff --git a/animations/ripple-animation.d.ts b/animations/ripple-animation.d.ts
index 56f0ff8..6b8cf59 100644
--- a/animations/ripple-animation.d.ts
+++ b/animations/ripple-animation.d.ts
@@ -35,7 +35,7 @@
  * ```
  */
 interface RippleAnimationElement extends Polymer.Element, Polymer.NeonSharedElementAnimationBehavior {
-  complete(): any;
+  complete(): void;
   configure(config: any): any;
 }
 
diff --git a/neon-animatable-behavior.d.ts b/neon-animatable-behavior.d.ts
index e8e3451..c59411a 100644
--- a/neon-animatable-behavior.d.ts
+++ b/neon-animatable-behavior.d.ts
@@ -34,11 +34,11 @@ declare namespace Polymer {
      * manually if using this. The animated node is set to `this` if using this property.
      */
     exitAnimation: string|null|undefined;
-    _entryAnimationChanged(): any;
-    _exitAnimationChanged(): any;
-    _copyProperties(config1: any, config2: any): any;
+    _entryAnimationChanged(): void;
+    _exitAnimationChanged(): void;
+    _copyProperties(config1: any, config2: any): void;
     _cloneConfig(config: any): any;
-    _getAnimationConfigRecursive(type: any, map: any, allConfigs: any): any;
+    _getAnimationConfigRecursive(type: any, map: any, allConfigs: any): void;
 
     /**
      * An element implementing `Polymer.NeonAnimationRunnerBehavior` calls this method to configure
diff --git a/neon-animated-pages.d.ts b/neon-animated-pages.d.ts
index f76f27e..e164ee9 100644
--- a/neon-animated-pages.d.ts
+++ b/neon-animated-pages.d.ts
@@ -27,10 +27,10 @@ interface NeonAnimatedPagesElement extends Polymer.Element, Polymer.IronResizabl
    * if true, the initial page selection will also be animated according to its animation config.
    */
   animateInitialSelection: boolean|null|undefined;
-  _onIronSelect(event: any): any;
-  _completeSelectedChanged(oldPage?: object|null, selectedPage?: object|null): any;
-  _onNeonAnimationFinish(event: any): any;
-  _notifyPageResize(): any;
+  _onIronSelect(event: any): void;
+  _completeSelectedChanged(oldPage?: object|null, selectedPage?: object|null): void;
+  _onNeonAnimationFinish(event: any): void;
+  _notifyPageResize(): void;
 }
 
 interface HTMLElementTagNameMap {
diff --git a/neon-animation-behavior.d.ts b/neon-animation-behavior.d.ts
index cdc4a5d..153f314 100644
--- a/neon-animation-behavior.d.ts
+++ b/neon-animation-behavior.d.ts
@@ -24,9 +24,10 @@ declare namespace Polymer {
 
     /**
      * Can be used to determine that elements implement this behavior.
+     *      
      */
     isNeonAnimation: boolean;
-    created(): any;
+    created(): void;
 
     /**
      * Returns the animation timing by mixing in properties from `config` to the defaults defined
@@ -37,12 +38,12 @@ declare namespace Polymer {
     /**
      * Sets `transform` and `transformOrigin` properties along with the prefixed versions.
      */
-    setPrefixedProperty(node: any, property: any, value: any): any;
+    setPrefixedProperty(node: any, property: any, value: any): void;
 
     /**
      * Called when the animation finishes.
      */
-    complete(config: any): any;
+    complete(config: any): void;
   }
 
   const NeonAnimationBehavior: object;
diff --git a/neon-animation-runner-behavior.d.ts b/neon-animation-runner-behavior.d.ts
index 5922385..162b649 100644
--- a/neon-animation-runner-behavior.d.ts
+++ b/neon-animation-runner-behavior.d.ts
@@ -19,17 +19,17 @@ declare namespace Polymer {
   interface NeonAnimationRunnerBehavior extends Polymer.NeonAnimatableBehavior {
     _configureAnimations(configs: any): any;
     _shouldComplete(activeEntries: any): any;
-    _complete(activeEntries: any): any;
+    _complete(activeEntries: any): void;
 
     /**
      * Plays an animation with an optional `type`.
      */
-    playAnimation(type?: string, cookie?: object): any;
+    playAnimation(type?: string, cookie?: object): void;
 
     /**
      * Cancels the currently running animations.
      */
-    cancelAnimation(): any;
+    cancelAnimation(): void;
   }
 
   const NeonAnimationRunnerBehavior: object;
diff --git a/package-lock.json b/package-lock.json
index 4aaec7c..77dd6c5 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -4,9 +4,9 @@
   "lockfileVersion": 1,
   "dependencies": {
     "@polymer/gen-typescript-declarations": {
-      "version": "1.1.1",
-      "resolved": "https://registry.npmjs.org/@polymer/gen-typescript-declarations/-/gen-typescript-declarations-1.1.1.tgz",
-      "integrity": "sha512-rUfH6USpiPYSHl2dC+/rGb3RYK8LPyqNhiuZCLv13F0fhYr01jdTogGuSphEoSLklm1gKRsDsrfZq7OvpzPYEg==",
+      "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": "9.4.2"
+        "@types/node": "9.4.6"
       }
     },
     "@types/glob": {
@@ -117,7 +117,7 @@
       "requires": {
         "@types/events": "1.1.0",
         "@types/minimatch": "3.0.3",
-        "@types/node": "9.4.2"
+        "@types/node": "9.4.6"
       }
     },
     "@types/minimatch": {
@@ -127,9 +127,9 @@
       "dev": true
     },
     "@types/node": {
-      "version": "9.4.2",
-      "resolved": "https://registry.npmjs.org/@types/node/-/node-9.4.2.tgz",
-      "integrity": "sha512-ubLY/uq8AQR+N1vUoa5Uf2zDg4yg/bysc3o4AAZzaMRS564R+vIRYqBxwfNlmRxRDJt/c5gn/X8O9mX8Oowugw==",
+      "version": "9.4.6",
+      "resolved": "https://registry.npmjs.org/@types/node/-/node-9.4.6.tgz",
+      "integrity": "sha512-CTUtLb6WqCCgp6P59QintjHWqzf4VL1uPA27bipLAPxFqrtK1gEYllePzTICGqQ8rYsCbpnsNypXjjDzGAAjEQ==",
       "dev": true
     },
     "@types/parse5": {
@@ -138,16 +138,16 @@
       "integrity": "sha1-44cKEOgnNacg9i1x3NGDunjvOp0=",
       "dev": true,
       "requires": {
-        "@types/node": "9.4.2"
+        "@types/node": "9.4.6"
       }
     },
     "@types/winston": {
-      "version": "2.3.7",
-      "resolved": "https://registry.npmjs.org/@types/winston/-/winston-2.3.7.tgz",
-      "integrity": "sha512-jNhbkxPtt9xbzvihfA0OavjJbpCIyTDSmwE03BVXgCKcz9lwNsq4cg2wsNkY4Av5eH35ttBArhYtVJa6CIrg2A==",
+      "version": "2.3.8",
+      "resolved": "https://registry.npmjs.org/@types/winston/-/winston-2.3.8.tgz",
+      "integrity": "sha512-QqR0j08RCS1AQYPMRPHikEpcmK+2aEEbcSzWLwOqyJ4FhLmHUx/WjRrnn7tTQg/y4IKnMhzskh/o7qvGIZZ7iA==",
       "dev": true,
       "requires": {
-        "@types/node": "9.4.2"
+        "@types/node": "9.4.6"
       }
     },
     "ansi-escape-sequences": {
@@ -290,9 +290,9 @@
       "dev": true
     },
     "brace-expansion": {
-      "version": "1.1.8",
-      "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-1.1.8.tgz",
-      "integrity": "sha1-wHshHHyVLsH479Uad+8NHTmQopI=",
+      "version": "1.1.11",
+      "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-1.1.11.tgz",
+      "integrity": "sha512-iCuPHDFgrHX7H2vEI/5xpz07zSHB00TpugqhmYtVmMO6518mCuRMoOYFldEBl0g187ufozdaHgWKcYFb61qGiA==",
       "dev": true,
       "requires": {
         "balanced-match": "1.0.0",
@@ -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": "6.0.98",
         "@types/parse5": "2.2.34",
         "clone": "2.1.1",
-        "parse5": "2.2.3"
-      },
-      "dependencies": {
-        "@types/node": {
-          "version": "6.0.98",
-          "resolved": "https://registry.npmjs.org/@types/node/-/node-6.0.98.tgz",
-          "integrity": "sha512-Pzldp01+6TyKlTBlp+i4RzFCuwjOpHxcfEnB74IedyEUqil2uLVg7jelYKS3Ik9/M4WzIK5N9RdtZg6UByyPEg==",
-          "dev": true
-        }
+        "parse5": "4.0.0"
       }
     },
     "escape-string-regexp": {
@@ -660,7 +650,7 @@
       "integrity": "sha512-yJHVQEhyqPLUTgt9B83PXu6W3rx4MvvHvSUvToogpwoGDOUQ+yDrR0HRot+yOCdCO7u4hX3pWft6kWBBcqh0UA==",
       "dev": true,
       "requires": {
-        "brace-expansion": "1.1.8"
+        "brace-expansion": "1.1.11"
       }
     },
     "minimatch-all": {
@@ -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": {
@@ -726,7 +716,7 @@
       "dev": true,
       "requires": {
         "@types/node": "4.2.23",
-        "@types/winston": "2.3.7",
+        "@types/winston": "2.3.8",
         "winston": "2.4.0"
       },
       "dependencies": {
@@ -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": "6.0.98",
+        "@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": "6.0.98",
-          "resolved": "https://registry.npmjs.org/@types/node/-/node-6.0.98.tgz",
-          "integrity": "sha512-Pzldp01+6TyKlTBlp+i4RzFCuwjOpHxcfEnB74IedyEUqil2uLVg7jelYKS3Ik9/M4WzIK5N9RdtZg6UByyPEg==",
+          "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": "6.0.98",
+        "@types/node": "6.0.101",
         "jsonschema": "1.2.2",
         "minimatch-all": "1.1.0",
         "plylog": "0.5.0"
       },
       "dependencies": {
         "@types/node": {
-          "version": "6.0.98",
-          "resolved": "https://registry.npmjs.org/@types/node/-/node-6.0.98.tgz",
-          "integrity": "sha512-Pzldp01+6TyKlTBlp+i4RzFCuwjOpHxcfEnB74IedyEUqil2uLVg7jelYKS3Ik9/M4WzIK5N9RdtZg6UByyPEg==",
+          "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 3a4a93d..2dd963b 100644
--- a/package.json
+++ b/package.json
@@ -8,7 +8,7 @@
   },
   "license": "BSD-3-Clause",
   "devDependencies": {
-    "@polymer/gen-typescript-declarations": "^1.1.1",
+    "@polymer/gen-typescript-declarations": "^1.2.0",
     "bower": "^1.8.0"
   },
   "scripts": {