diff --git a/schema/config-linux.json b/schema/config-linux.json
index 518b71ae7..e83b43f25 100644
--- a/schema/config-linux.json
+++ b/schema/config-linux.json
@@ -89,7 +89,10 @@
                                 "id": "https://opencontainers.org/schema/bundle/linux/resources/pids/limit",
                                 "$ref": "defs.json#/definitions/int64"
                             }
-                        }
+                        },
+                        "required": [
+                            "limit"
+                        ]
                     },
                     "blockIO": {
                         "id": "https://opencontainers.org/schema/bundle/linux/resources/blockIO",
@@ -222,7 +225,11 @@
                                         "limit": {
                                             "$ref": "defs.json#/definitions/uint64"
                                         }
-                                    }
+                                    },
+                                    "required": [
+                                        "pageSize",
+                                        "limit"
+                                    ]
                                 }
                             },
                             {
diff --git a/schema/config-schema.json b/schema/config-schema.json
index 95113a800..94808e839 100644
--- a/schema/config-schema.json
+++ b/schema/config-schema.json
@@ -59,6 +59,9 @@
             "description": "Configures the container's root filesystem.",
             "id": "https://opencontainers.org/schema/bundle/root",
             "type": "object",
+            "required": [
+                "path"
+            ],
             "properties": {
                 "path": {
                     "id": "https://opencontainers.org/schema/bundle/root/path",
@@ -82,6 +85,24 @@
                     "id": "https://opencontainers.org/schema/bundle/process/args",
                     "$ref": "defs.json#/definitions/ArrayOfStrings"
                 },
+                "consoleSize": {
+                    "id": "https://opencontainers.org/schema/bundle/process/consoleSize",
+                    "type": "object",
+                    "required": [
+                        "height",
+                        "width"
+                    ],
+                    "properties": {
+                        "height": {
+                            "id": "https://opencontainers.org/schema/bundle/process/consoleSize/height",
+                            "$ref": "defs.json#/definitions/unit64"
+                        },
+                        "width": {
+                            "id": "https://opencontainers.org/schema/bundle/process/consoleSize/width",
+                            "$ref": "defs.json#/definitions/unit64"
+                        }
+                    }
+                },
                 "cwd": {
                     "id": "https://opencontainers.org/schema/bundle/process/cwd",
                     "type": "string"
diff --git a/schema/defs-linux.json b/schema/defs-linux.json
index 9ccad6b06..0cecb14a0 100644
--- a/schema/defs-linux.json
+++ b/schema/defs-linux.json
@@ -106,6 +106,12 @@
         },
         "Device": {
             "type": "object",
+            "required": [
+                "type",
+                "path",
+                "major",
+                "minor"
+            ],
             "properties": {
                 "type": {
                     "$ref": "#/definitions/FileType"
@@ -249,7 +255,10 @@
                 "access": {
                     "$ref": "defs.json#/definitions/stringPointer"
                 }
-            }
+            },
+            "required": [
+                "allow"
+            ]
         },
         "NetworkInterfacePriority": {
             "type": "object",
@@ -260,7 +269,11 @@
                 "priority": {
                     "$ref": "defs.json#/definitions/uint32"
                 }
-            }
+            },
+            "required": [
+                "name",
+                "priority"
+            ]
         },
         "NamespaceType": {
             "type": "string",
@@ -283,7 +296,10 @@
                 "path": {
                     "$ref": "defs.json#/definitions/FilePath"
                 }
-            }
+            },
+            "required": [
+                "type"
+            ]
         }
     }
 }
diff --git a/schema/defs.json b/schema/defs.json
index aa03170af..89523607d 100644
--- a/schema/defs.json
+++ b/schema/defs.json
@@ -163,7 +163,12 @@
                 "size": {
                     "$ref": "#/definitions/uint32"
                 }
-            }
+            },
+            "required": [
+                "hostID",
+                "containerID",
+                "size"
+            ]
         },
         "Mount": {
             "type": "object",
diff --git a/specs-go/state.go b/specs-go/state.go
index a74874ed5..cecfa408e 100644
--- a/specs-go/state.go
+++ b/specs-go/state.go
@@ -13,5 +13,5 @@ type State struct {
 	// BundlePath is the path to the container's bundle directory.
 	BundlePath string `json:"bundlePath"`
 	// Annotations are the annotations associated with the container.
-	Annotations map[string]string `json:"annotations"`
+	Annotations map[string]string `json:"annotations,omitempty"`
 }