diff --git a/Assets/UniGLTF/Runtime/UniGLTF/UniGLTFVersion.cs b/Assets/UniGLTF/Runtime/UniGLTF/UniGLTFVersion.cs
index b7769bd8d..c15f4d59f 100644
--- a/Assets/UniGLTF/Runtime/UniGLTF/UniGLTFVersion.cs
+++ b/Assets/UniGLTF/Runtime/UniGLTF/UniGLTFVersion.cs
@@ -5,7 +5,7 @@ namespace UniGLTF
     {
         public const int MAJOR = 2;
         public const int MINOR = 3;
-        public const int PATCH = 0;
-        public const string VERSION = "2.3.0";
+        public const int PATCH = 1;
+        public const string VERSION = "2.3.1";
     }
 }
diff --git a/Assets/UniGLTF/package.json b/Assets/UniGLTF/package.json
index 3a5353ff0..d4c1d5208 100644
--- a/Assets/UniGLTF/package.json
+++ b/Assets/UniGLTF/package.json
@@ -1,6 +1,6 @@
 {
   "name": "com.vrmc.unigltf",
-  "version": "2.3.0",
+  "version": "2.3.1",
   "displayName": "UniGLTF",
   "description": "GLTF importer and exporter",
   "unity": "2018.4",
diff --git a/Assets/VRM/package.json b/Assets/VRM/package.json
index e5765df76..2608f679a 100644
--- a/Assets/VRM/package.json
+++ b/Assets/VRM/package.json
@@ -15,6 +15,6 @@
   },
   "dependencies": {
     "com.vrmc.vrmshaders": "0.67.1",
-    "com.vrmc.unigltf": "2.3.0"
+    "com.vrmc.unigltf": "2.3.1"
   }
 }