diff --git a/src/types/interactions/commands/application_command_interaction_data_option.ts b/src/types/interactions/commands/application_command_interaction_data_option.ts
index ed53eff94..ce4a7c141 100644
--- a/src/types/interactions/commands/application_command_interaction_data_option.ts
+++ b/src/types/interactions/commands/application_command_interaction_data_option.ts
@@ -23,6 +23,8 @@ interface ApplicationCommandInteractionDataOptionBase<T extends DiscordApplicati
   type: T;
   /** The value of the pair */
   value: V;
+  /** Whether the user has focused this option for autocompletion. */
+  focused?: true;
 }
 
 export interface ApplicationCommandInteractionDataOptionSubCommand
diff --git a/src/types/interactions/commands/application_command_option.ts b/src/types/interactions/commands/application_command_option.ts
index fe9fcd35b..c3b039611 100644
--- a/src/types/interactions/commands/application_command_option.ts
+++ b/src/types/interactions/commands/application_command_option.ts
@@ -16,6 +16,8 @@ export interface ApplicationCommandOption {
   choices?: ApplicationCommandOptionChoice[];
   /** If the option is a subcommand or subcommand group type, this nested options will be the parameters */
   options?: ApplicationCommandOption[];
+  /** Whether this option should make autocomplete interactions. */
+  autocomplete?: boolean;
   /** If the option is a channel type, the channels shown will be restricted to these types */
   channelTypes?: ChannelTypes[];
 }
diff --git a/src/types/interactions/interaction_response_types.ts b/src/types/interactions/interaction_response_types.ts
index 47c38e2d4..6332c6648 100644
--- a/src/types/interactions/interaction_response_types.ts
+++ b/src/types/interactions/interaction_response_types.ts
@@ -10,6 +10,8 @@ export enum DiscordInteractionResponseTypes {
   DeferredUpdateMessage,
   /** For components, edit the message the component was attached to */
   UpdateMessage,
+  /** For Application Command Options, send an autocomplete result */
+  ApplicationCommandAutocompleteResult,
 }
 
 export type InteractionResponseTypes = DiscordInteractionResponseTypes;
diff --git a/src/types/interactions/interaction_types.ts b/src/types/interactions/interaction_types.ts
index 561b6ee53..d5f280921 100644
--- a/src/types/interactions/interaction_types.ts
+++ b/src/types/interactions/interaction_types.ts
@@ -3,6 +3,7 @@ export enum DiscordInteractionTypes {
   Ping = 1,
   ApplicationCommand,
   MessageComponent,
+  ApplicationCommandAutocomplete,
 }
 
 export type InteractionTypes = DiscordInteractionTypes;
diff --git a/src/util/utils.ts b/src/util/utils.ts
index 1794fb524..d297650ba 100644
--- a/src/util/utils.ts
+++ b/src/util/utils.ts
@@ -52,6 +52,7 @@ export function validateSlashOptionChoices(
   });
 }
 
+// TODO: add checks for autocomplete options when discord provides more info about them.
 export function validateSlashOptions(bot: Bot, options: ApplicationCommandOption[]) {
   const requiredOptions: ApplicationCommandOption[] = [];
   const optionalOptions: ApplicationCommandOption[] = [];