diff --git a/src/MessagePipe.Unity/Assets/Plugins/MessagePipe.Interprocess/package.json b/src/MessagePipe.Unity/Assets/Plugins/MessagePipe.Interprocess/package.json
index 41ef487..7303070 100644
--- a/src/MessagePipe.Unity/Assets/Plugins/MessagePipe.Interprocess/package.json
+++ b/src/MessagePipe.Unity/Assets/Plugins/MessagePipe.Interprocess/package.json
@@ -2,7 +2,7 @@
     "name": "com.cysharp.messagepipe.interprocess",
     "displayName": "MessagePipe.Interprocess",
     "author": { "name": "Cysharp, Inc.", "url": "https://cysharp.co.jp/en/" },
-    "version": "1.8.0",
+    "version": "1.8.1",
     "unity": "2018.4",
     "description": "MessagePipe Interprocess Extension.",
     "keywords": [ "pubsub", "event", "Scripting", "DI" ],
diff --git a/src/MessagePipe.Unity/Assets/Plugins/MessagePipe.VContainer/package.json b/src/MessagePipe.Unity/Assets/Plugins/MessagePipe.VContainer/package.json
index 48b1622..43aa21f 100644
--- a/src/MessagePipe.Unity/Assets/Plugins/MessagePipe.VContainer/package.json
+++ b/src/MessagePipe.Unity/Assets/Plugins/MessagePipe.VContainer/package.json
@@ -2,7 +2,7 @@
     "name": "com.cysharp.messagepipe.vcontainer",
     "displayName": "MessagePipe.VContainer",
     "author": { "name": "Cysharp, Inc.", "url": "https://cysharp.co.jp/en/" },
-    "version": "1.8.0",
+    "version": "1.8.1",
     "unity": "2018.4",
     "description": "MessagePipe Runtime support for VContainer.",
     "keywords": [ "pubsub", "event", "Scripting", "DI" ],
diff --git a/src/MessagePipe.Unity/Assets/Plugins/MessagePipe.Zenject/package.json b/src/MessagePipe.Unity/Assets/Plugins/MessagePipe.Zenject/package.json
index 0909a81..87e008b 100644
--- a/src/MessagePipe.Unity/Assets/Plugins/MessagePipe.Zenject/package.json
+++ b/src/MessagePipe.Unity/Assets/Plugins/MessagePipe.Zenject/package.json
@@ -2,7 +2,7 @@
     "name": "com.cysharp.messagepipe.zenject",
     "displayName": "MessagePipe.Zenject",
     "author": { "name": "Cysharp, Inc.", "url": "https://cysharp.co.jp/en/" },
-    "version": "1.8.0",
+    "version": "1.8.1",
     "unity": "2018.4",
     "description": "MessagePipe Runtime support for Zenject.",
     "keywords": [ "pubsub", "event", "Scripting", "DI" ],
diff --git a/src/MessagePipe.Unity/Assets/Plugins/MessagePipe/package.json b/src/MessagePipe.Unity/Assets/Plugins/MessagePipe/package.json
index d68592a..910dc7f 100644
--- a/src/MessagePipe.Unity/Assets/Plugins/MessagePipe/package.json
+++ b/src/MessagePipe.Unity/Assets/Plugins/MessagePipe/package.json
@@ -2,7 +2,7 @@
     "name": "com.cysharp.messagepipe",
     "displayName": "MessagePipe",
     "author": { "name": "Cysharp, Inc.", "url": "https://cysharp.co.jp/en/" },
-    "version": "1.8.0",
+    "version": "1.8.1",
     "unity": "2018.4",
     "description": "High performance messaging pipeline.",
     "keywords": [ "pubsub", "event", "Scripting", "DI" ],