diff --git a/specification.md b/specification.md
index 50048fd..a45c875 100644
--- a/specification.md
+++ b/specification.md
@@ -1354,6 +1354,19 @@ export interface SignatureHelpOptions {
 	triggerCharacters?: string[];
 }
 
+/**
+ * Code Action options.
+ */
+export interface CodeActionOptions {
+	/**
+	 * CodeActionKinds that this server may return.
+	 *
+	 * The list of kinds may be generic, such as `CodeActionKind.Refactor`, or the server
+	 * may list out every specific kind they provide.
+	 */
+	providedCodeActionKinds?: CodeActionKind[];
+}
+
 /**
  * Code Lens options.
  */
@@ -1509,7 +1522,7 @@ interface ServerCapabilities {
 	/**
 	 * The server provides code actions.
 	 */
-	codeActionProvider?: boolean;
+	codeActionProvider?: boolean | CodeActionOptions;
 	/**
 	 * The server provides code lens.
 	 */