diff --git a/README.md b/README.md
index bbc1181..7f63e1e 100644
--- a/README.md
+++ b/README.md
@@ -24,7 +24,7 @@ Download and install via the [Package Installer](http://package-installer.glitch
 ``` json
 {
   "dependencies": {
-    "com.netpyoung.webp": "0.3.12"
+    "com.netpyoung.webp": "0.3.13"
   },
   "scopedRegistries": [
     {
@@ -44,7 +44,7 @@ Download and install via the [Package Installer](http://package-installer.glitch
 ``` json
 {
   "dependencies": {
-    "com.netpyoung.webp": "https://github.com/netpyoung/unity.webp.git?path=unity_project/Assets/unity.webp#0.3.12"
+    "com.netpyoung.webp": "https://github.com/netpyoung/unity.webp.git?path=unity_project/Assets/unity.webp#0.3.13"
   },
   "scopedRegistries": [
     {
diff --git a/docs/index.markdown b/docs/index.markdown
index cae04cb..851575b 100644
--- a/docs/index.markdown
+++ b/docs/index.markdown
@@ -13,7 +13,7 @@ using #{version} for versioning.
 ``` json
 {
   "dependencies": {
-    "com.netpyoung.webp": "https://github.com/netpyoung/unity.webp.git?path=unity_project/Assets/unity.webp#0.3.12",
+    "com.netpyoung.webp": "https://github.com/netpyoung/unity.webp.git?path=unity_project/Assets/unity.webp#0.3.13",
     "org.nuget.system.runtime.compilerservices.unsafe": "6.0.0"
   },
   "scopedRegistries": [
diff --git a/unity_project/Assets/unity.webp/package.json b/unity_project/Assets/unity.webp/package.json
index 762303d..ddac46e 100644
--- a/unity_project/Assets/unity.webp/package.json
+++ b/unity_project/Assets/unity.webp/package.json
@@ -1,7 +1,7 @@
 {
   "name": "com.netpyoung.webp",
   "displayName": "Unity.WebP",
-  "version": "0.3.12",
+  "version": "0.3.13",
   "unity": "2018.4",
   "description": "webp made easy for Unity3d.",
   "keywords": ["webp","unity.webp"],
diff --git a/unity_project/Assets/unitypackage-builder/Editor/PackageTool.cs b/unity_project/Assets/unitypackage-builder/Editor/PackageTool.cs
index eb88c04..7ed16e7 100644
--- a/unity_project/Assets/unitypackage-builder/Editor/PackageTool.cs
+++ b/unity_project/Assets/unitypackage-builder/Editor/PackageTool.cs
@@ -5,7 +5,7 @@ public class PackageTool
     [MenuItem("Package/Update Package")]
     private static void UpdatePackage()
     {
-        const string VERSION = "0.3.12";
+        const string VERSION = "0.3.13";
         AssetDatabase.ExportPackage(
             new[] {"Assets/unity.webp"},
             $"../webp-{VERSION}.unitypackage",