diff --git a/types/elasticsearch/index.d.ts b/types/elasticsearch/index.d.ts
index a9dc133545..ec3d417483 100644
--- a/types/elasticsearch/index.d.ts
+++ b/types/elasticsearch/index.d.ts
@@ -39,8 +39,8 @@ export class Client {
     deleteScript(params: DeleteScriptParams, callback: (error: any, response: any) => void): void;
     deleteTemplate(params: DeleteTemplateParams): Promise<any>;
     deleteTemplate(params: DeleteTemplateParams, callback: (error: any, response: any) => void): void;
-    exists(params: ExistsParams): Promise<any>;
-    exists(params: ExistsParams, callback: (error: any, response: any, status?: any) => void): void;
+    exists(params: ExistsParams): Promise<boolean>;
+    exists(params: ExistsParams, callback: (error: any, response: boolean, status?: any) => void): void;
     explain(params: ExplainParams): Promise<ExplainResponse>;
     explain(params: ExplainParams, callback: (error: any, response: ExplainResponse) => void): void;
     fieldStats(params: FieldStatsParams): Promise<FieldStatsResponse>;
@@ -1036,14 +1036,14 @@ export class Indices {
     deleteAlias(params: IndicesDeleteAliasParams): Promise<any>;
     deleteTemplate(params: IndicesDeleteTemplateParams, callback: (error: any, response: any, status: any) => void): void;
     deleteTemplate(params: IndicesDeleteTemplateParams): Promise<any>;
-    exists(params: IndicesExistsParams, callback: (error: any, response: any, status: any) => void): void;
-    exists(params: IndicesExistsParams): Promise<any>;
-    existsAlias(params: IndicesExistsAliasParams, callback: (error: any, response: any, status: any) => void): void;
-    existsAlias(params: IndicesExistsAliasParams): Promise<any>;
-    existsTemplate(params: IndicesExistsTemplateParams, callback: (error: any, response: any, status: any) => void): void;
-    existsTemplate(params: IndicesExistsTemplateParams): Promise<any>;
-    existsType(params: IndicesExistsTypeParams, callback: (error: any, response: any, status: any) => void): void;
-    existsType(params: IndicesExistsTypeParams): Promise<any>;
+    exists(params: IndicesExistsParams, callback: (error: any, response: boolean, status: any) => void): void;
+    exists(params: IndicesExistsParams): Promise<boolean>;
+    existsAlias(params: IndicesExistsAliasParams, callback: (error: any, response: boolean, status: any) => void): void;
+    existsAlias(params: IndicesExistsAliasParams): Promise<boolean>;
+    existsTemplate(params: IndicesExistsTemplateParams, callback: (error: any, response: boolean, status: any) => void): void;
+    existsTemplate(params: IndicesExistsTemplateParams): Promise<boolean>;
+    existsType(params: IndicesExistsTypeParams, callback: (error: any, response: boolean, status: any) => void): void;
+    existsType(params: IndicesExistsTypeParams): Promise<boolean>;
     flush(params: IndicesFlushParams, callback: (error: any, response: any, status: any) => void): void;
     flush(params: IndicesFlushParams): Promise<any>;
     flushSynced(params: IndicesFlushSyncedParams, callback: (error: any, response: any, status: any) => void): void;