diff --git a/examples/example-autzen.json b/examples/example-autzen.json
index be33e91..1eef3be 100644
--- a/examples/example-autzen.json
+++ b/examples/example-autzen.json
@@ -374,7 +374,7 @@
     "title": "USGS 3DEP LiDAR"
   },
   "stac_extensions": [
-    "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
+    "https://stac-extensions.github.io/pointcloud/v2.0.0/schema.json"
   ],
   "stac_version": "1.0.0",
   "type": "Feature"
diff --git a/json-schema/schema.json b/json-schema/schema.json
index 544b11e..4d3e5fa 100644
--- a/json-schema/schema.json
+++ b/json-schema/schema.json
@@ -1,97 +1,91 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "$id": "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json#",
+  "$id": "https://stac-extensions.github.io/pointcloud/v2.0.0/schema.json#",
   "title": "Point Cloud Extension",
   "description": "STAC Point Cloud Extension for STAC Items and STAC Collections.",
+  "type": "object",
+  "required": [
+    "stac_extensions"
+  ],
+  "properties": {
+    "stac_extensions": {
+      "type": "array",
+      "contains": {
+        "const": "https://stac-extensions.github.io/pointcloud/v2.0.0/schema.json"
+      }
+    }
+  },
   "oneOf": [
     {
       "$comment": "This is the schema for STAC Items.",
-      "allOf": [
-        {
+      "type": "object",
+      "required": [
+        "type",
+        "properties",
+        "assets"
+      ],
+      "properties": {
+        "type": {
+          "const": "Feature"
+        },
+        "properties": {
+          "$ref": "#/definitions/fields"
+        },
+        "assets": {
           "type": "object",
-          "required": [
-            "type",
-            "properties",
-            "assets"
-          ],
+          "additionalProperties": {
+            "$ref": "#/definitions/fields"
+          }
+        }
+      },
+      "anyOf": [
+        {
           "properties": {
-            "type": {
-              "const": "Feature"
-            },
             "properties": {
-              "allOf": [
-                {
-                  "$comment": "Require fields here for item properties.",
-                  "required": [
-                    "pc:count",
-                    "pc:type"
-                  ]
-                },
-                {
-                  "$ref": "#/definitions/fields"
-                }
-              ]
-            },
-            "assets": {
-              "type": "object",
-              "additionalProperties": {
-                "$ref": "#/definitions/fields"
-              }
+              "$ref": "#/definitions/require_any"
             }
           }
         },
         {
-          "$ref": "#/definitions/stac_extensions"
+          "$ref": "#/definitions/require_in_assets"
         }
       ]
     },
     {
       "$comment": "This is the schema for STAC Collections.",
-      "allOf": [
+      "type": "object",
+      "required": [
+        "type"
+      ],
+      "properties": {
+        "type": {
+          "const": "Collection"
+        },
+        "assets": {
+          "$ref": "#/definitions/fields"
+        },
+        "item_assets": {
+          "$ref": "#/definitions/fields"
+        }
+      },
+      "anyOf": [
+        {
+          "$ref": "#/definitions/require_in_item_assets"
+        },
+        {
+          "$ref": "#/definitions/require_in_assets"
+        },
         {
-          "type": "object",
-          "required": [
-            "type"
-          ],
           "properties": {
-            "type": {
-              "const": "Collection"
-            },
-            "assets": {
-              "type": "object",
-              "additionalProperties": {
-                "$ref": "#/definitions/fields"
-              }
-            },
-            "item_assets": {
-              "type": "object",
-              "additionalProperties": {
-                "$ref": "#/definitions/fields"
-              }
+            "summaries": {
+              "$ref": "#/definitions/require_any"
             }
           }
-        },
-        {
-          "$ref": "#/definitions/stac_extensions"
         }
       ]
     }
   ],
   "definitions": {
-    "stac_extensions": {
-      "type": "object",
-      "required": [
-        "stac_extensions"
-      ],
-      "properties": {
-        "stac_extensions": {
-          "type": "array",
-          "contains": {
-            "const": "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
-          }
-        }
-      }
-    },
     "fields": {
       "type": "object",
       "properties": {
@@ -122,6 +116,10 @@
           }
         }
       },
+      "required": [
+        "count",
+        "type"
+      ],
       "patternProperties": {
         "^(?!pc:)": {}
       },
@@ -140,7 +138,8 @@
           "minLength": 1
         },
         "size": {
-          "type": "integer"
+          "type": "integer",
+          "minimum": 0
         },
         "type": {
           "type": "string",
diff --git a/package.json b/package.json
index 496ebef..9894158 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "stac-extensions",
-  "version": "1.0.0",
+  "version": "2.0.0",
   "scripts": {
     "test": "npm run check-markdown && npm run check-examples",
     "check-markdown": "remark . -f -r .github/remark.yaml",
@@ -17,4 +17,4 @@
     "remark-validate-links": "^10.0.0",
     "stac-node-validator": "^1.0.0"
   }
-}
+}
\ No newline at end of file