diff --git a/package.json b/package.json
index c673099ca..4413c9307 100644
--- a/package.json
+++ b/package.json
@@ -491,7 +491,7 @@
               "useApiV1": {
                 "type": "boolean",
                 "description": "If true, the v1 of delve apis will be used, else v2 will be used",
-                "default": true
+                "default": false
               }
             }
           }
@@ -1153,7 +1153,7 @@
             "useApiV1": {
               "type": "boolean",
               "description": "If true, the v1 of delve apis will be used, else v2 will be used",
-              "default": true
+              "default": false
             }
           },
           "scope": "resource"
diff --git a/src/debugAdapter/goDebug.ts b/src/debugAdapter/goDebug.ts
index 6228da103..0297c8048 100644
--- a/src/debugAdapter/goDebug.ts
+++ b/src/debugAdapter/goDebug.ts
@@ -261,7 +261,7 @@ class Delve {
 	constructor(remotePath: string, port: number, host: string, program: string, launchArgs: LaunchRequestArguments) {
 		this.program = normalizePath(program);
 		this.remotePath = remotePath;
-		this.isApiV1 = typeof launchArgs.useApiV1 === 'boolean' ? launchArgs.useApiV1 : true;
+		this.isApiV1 = typeof launchArgs.useApiV1 === 'boolean' ? launchArgs.useApiV1 : false;
 		let mode = launchArgs.mode;
 		let dlvCwd = dirname(program);
 		let isProgramDirectory = false;