diff --git a/api/channel.go b/api/channel.go
index 9d78b48..a65e86e 100644
--- a/api/channel.go
+++ b/api/channel.go
@@ -167,13 +167,14 @@ func (c *Client) DeleteChannel(channelID discord.ChannelID) error {
 	return c.FastRequest("DELETE", EndpointChannels+channelID.String())
 }
 
+// https://discord.com/developers/docs/resources/channel#edit-channel-permissions-json-params
 type EditChannelPermissionData struct {
 	// Type is either "role" or "member".
 	Type discord.OverwriteType `json:"type"`
 	// Allow is a permission bit set for granted permissions.
-	Allow discord.Permissions `json:"allow"`
+	Allow discord.Permissions `json:"allow,string"`
 	// Deny is a permission bit set for denied permissions.
-	Deny discord.Permissions `json:"deny"`
+	Deny discord.Permissions `json:"deny,string"`
 }
 
 // EditChannelPermission edits the channel's permission overwrites for a user
diff --git a/api/role.go b/api/role.go
index 5ea2d6f..b1fab9b 100644
--- a/api/role.go
+++ b/api/role.go
@@ -42,7 +42,7 @@ type CreateRoleData struct {
 	// Permissions is the bitwise value of the enabled/disabled permissions.
 	//
 	// Default: @everyone permissions in guild
-	Permissions discord.Permissions `json:"permissions,omitempty"`
+	Permissions discord.Permissions `json:"permissions,omitempty,string"`
 	// Color is the RGB color value of the role.
 	//
 	// Default: 0
@@ -98,7 +98,7 @@ type ModifyRoleData struct {
 	// Name is the 	name of the role.
 	Name option.NullableString `json:"name,omitempty"`
 	// Permissions is the bitwise value of the enabled/disabled permissions.
-	Permissions *discord.Permissions `json:"permissions,omitempty"`
+	Permissions *discord.Permissions `json:"permissions,omitempty,string"`
 	// Permissions is the bitwise value of the enabled/disabled permissions.
 	Color option.NullableColor `json:"color,omitempty"`
 	// Hoist specifies whether the role should be displayed separately in the
diff --git a/discord/channel.go b/discord/channel.go
index 5ec3403..171c71f 100644
--- a/discord/channel.go
+++ b/discord/channel.go
@@ -1,5 +1,7 @@
 package discord
 
+import "github.com/diamondburned/arikawa/utils/json"
+
 // https://discord.com/developers/docs/resources/channel#channel-object
 type Channel struct {
 	// ID is the id of this channel.
@@ -103,13 +105,37 @@ var (
 // https://discord.com/developers/docs/resources/channel#overwrite-object
 type Overwrite struct {
 	// ID is the role or user id.
-	ID Snowflake `json:"id,string"`
+	ID Snowflake `json:"id"`
 	// Type is either "role" or "member".
 	Type OverwriteType `json:"type"`
 	// Allow is a permission bit set for granted permissions.
-	Allow Permissions `json:"allow"`
+	Allow Permissions `json:"allow,string"`
 	// Deny is a permission bit set for denied permissions.
-	Deny Permissions `json:"deny"`
+	Deny Permissions `json:"deny,string"`
+}
+
+// UnmarshalJSON unmarshals the passed json data into the Overwrite.
+// This is necessary because Discord has different names for fields when
+// sending than receiving.
+func (o *Overwrite) UnmarshalJSON(data []byte) (err error) {
+	var recv struct {
+		ID    Snowflake     `json:"id"`
+		Type  OverwriteType `json:"type"`
+		Allow Permissions   `json:"allow_new,string"`
+		Deny  Permissions   `json:"deny_new,string"`
+	}
+
+	err = json.Unmarshal(data, &recv)
+	if err != nil {
+		return
+	}
+
+	o.ID = recv.ID
+	o.Type = recv.Type
+	o.Allow = recv.Allow
+	o.Deny = recv.Deny
+
+	return
 }
 
 type OverwriteType string
diff --git a/discord/guild.go b/discord/guild.go
index 3c33974..7a22bec 100644
--- a/discord/guild.go
+++ b/discord/guild.go
@@ -23,7 +23,7 @@ type Guild struct {
 
 	// Permissions are the total permissions for the user in the guild
 	// (excludes overrides).
-	Permissions Permissions `json:"permissions,omitempty"`
+	Permissions Permissions `json:"permissions_new,omitempty,string"`
 
 	// VoiceRegion is the voice region id for the guild.
 	VoiceRegion string `json:"region"`
@@ -297,7 +297,7 @@ type Role struct {
 	Position int `json:"position"`
 
 	// Permissions is the permission bit set.
-	Permissions Permissions `json:"permissions"`
+	Permissions Permissions `json:"permissions_new,string"`
 
 	// Manages specifies whether this role is managed by an integration.
 	Managed bool `json:"managed"`