diff --git a/UniGLTF b/UniGLTF
index 8f04b09b5..975f06f87 160000
--- a/UniGLTF
+++ b/UniGLTF
@@ -1 +1 @@
-Subproject commit 8f04b09b5cb7c12ad0f49b6aaa66800029258f77
+Subproject commit 975f06f872b86b0a269cdd39a756a8b1f4c17435
diff --git a/specification/0.0/schema/vrm.firstperson.schema.json b/specification/0.0/schema/vrm.firstperson.schema.json
index 172f76558..97823801f 100644
--- a/specification/0.0/schema/vrm.firstperson.schema.json
+++ b/specification/0.0/schema/vrm.firstperson.schema.json
@@ -8,7 +8,18 @@
         },
         "firstPersonBoneOffset": {
             "description": "The target position of the VR headset in first-person view. It is assumed that an offset from the head bone to the VR headset is added.",
-            "type": "array"
+            "type": "object",
+            "properties": {
+                "x": {
+                    "type": "number"
+                },
+                "y": {
+                    "type": "number"
+                },
+                "z": {
+                    "type": "number"
+                }
+            }
         },
         "meshAnnotations": {
             "description": "Switch display \/ undisplay for each mesh in first-person view or the others.",
diff --git a/specification/0.0/schema/vrm.humanoid.bone.schema.json b/specification/0.0/schema/vrm.humanoid.bone.schema.json
index 86c098af9..cd6c4b137 100644
--- a/specification/0.0/schema/vrm.humanoid.bone.schema.json
+++ b/specification/0.0/schema/vrm.humanoid.bone.schema.json
@@ -17,15 +17,48 @@
         },
         "min": {
             "description": "Unity's HumanLimit.min",
-            "type": "array"
+            "type": "object",
+            "properties": {
+                "x": {
+                    "type": "number"
+                },
+                "y": {
+                    "type": "number"
+                },
+                "z": {
+                    "type": "number"
+                }
+            }
         },
         "max": {
             "description": "Unity's HumanLimit.max",
-            "type": "array"
+            "type": "object",
+            "properties": {
+                "x": {
+                    "type": "number"
+                },
+                "y": {
+                    "type": "number"
+                },
+                "z": {
+                    "type": "number"
+                }
+            }
         },
         "center": {
             "description": "Unity's HumanLimit.center",
-            "type": "array"
+            "type": "object",
+            "properties": {
+                "x": {
+                    "type": "number"
+                },
+                "y": {
+                    "type": "number"
+                },
+                "z": {
+                    "type": "number"
+                }
+            }
         },
         "axisLength": {
             "description": "Unity's HumanLimit.axisLength",
diff --git a/specification/0.0/schema/vrm.secondaryanimation.collidergroup.schema.json b/specification/0.0/schema/vrm.secondaryanimation.collidergroup.schema.json
index 6116fc731..75721b03f 100644
--- a/specification/0.0/schema/vrm.secondaryanimation.collidergroup.schema.json
+++ b/specification/0.0/schema/vrm.secondaryanimation.collidergroup.schema.json
@@ -13,7 +13,18 @@
                 "properties": {
                     "offset": {
                         "description": "The local coordinate from the node of the collider group.",
-                        "type": "array"
+                        "type": "object",
+                        "properties": {
+                            "x": {
+                                "type": "number"
+                            },
+                            "y": {
+                                "type": "number"
+                            },
+                            "z": {
+                                "type": "number"
+                            }
+                        }
                     },
                     "radius": {
                         "description": "The radius of the collider.",
diff --git a/specification/0.0/schema/vrm.secondaryanimation.spring.schema.json b/specification/0.0/schema/vrm.secondaryanimation.spring.schema.json
index 3f1489f2f..bf35679d4 100644
--- a/specification/0.0/schema/vrm.secondaryanimation.spring.schema.json
+++ b/specification/0.0/schema/vrm.secondaryanimation.spring.schema.json
@@ -16,7 +16,18 @@
         },
         "gravityDir": {
             "description": "The direction of gravity. Set (0, -1, 0) for simulating the gravity. Set (1, 0, 0) for simulating the wind.",
-            "type": "array"
+            "type": "object",
+            "properties": {
+                "x": {
+                    "type": "number"
+                },
+                "y": {
+                    "type": "number"
+                },
+                "z": {
+                    "type": "number"
+                }
+            }
         },
         "dragForce": {
             "description": "The resistance (deceleration) of automatic animation.",