diff --git a/lib/debug/server_dap.rb b/lib/debug/server_dap.rb
index fac6dd4bb..8dbefda8a 100644
--- a/lib/debug/server_dap.rb
+++ b/lib/debug/server_dap.rb
@@ -274,12 +274,23 @@ def recv_request
       retry
     end
 
-    def load_rdbgExtension req
-      if exts = req.dig('arguments', 'rdbgExtension')
+    def load_extensions req
+      if exts = req.dig('arguments', 'rdbgExtensions')
         exts.each{|ext|
           require_relative "dap_custom/#{File.basename(ext)}"
         }
       end
+
+      if scripts = req.dig('arguments', 'rdbgInitialScripts')
+        scripts.each do |script|
+          begin
+            eval(script)
+          rescue Exception => e
+            puts e.message
+            puts e.backtrace.inspect
+          end
+        end
+      end
     end
 
     def process
@@ -303,7 +314,7 @@ def process_request req
         UI_DAP.local_fs_map_set req.dig('arguments', 'localfs') || req.dig('arguments', 'localfsMap') || true
         @nonstop = true
 
-        load_rdbgExtension req
+        load_extensions req
 
       when 'attach'
         send_response req
@@ -315,7 +326,7 @@ def process_request req
           @nonstop = false
         end
 
-        load_rdbgExtension req
+        load_extensions req
 
       when 'configurationDone'
         send_response req
diff --git a/test/protocol/rdbgTraceInspctor_test.rb b/test/protocol/rdbgTraceInspctor_test.rb
index 18a94b61f..f42049b63 100644
--- a/test/protocol/rdbgTraceInspctor_test.rb
+++ b/test/protocol/rdbgTraceInspctor_test.rb
@@ -13,7 +13,7 @@ class RdbgTraceInspectorTraceTest < ProtocolTestCase
     RUBY
 
     def test_defaut_setting
-      DEBUGGER__::INITIALIZE_DAP_MSGS[1][:arguments][:rdbgExtension] = ["traceInspector"]
+      DEBUGGER__::INITIALIZE_DAP_MSGS[1][:arguments][:rdbgExtensions] = ["traceInspector"]
       run_protocol_scenario(PROGRAM, cdp: false) do
         req_rdbgTraceInspector_trace_enable
         req_add_breakpoint 5
@@ -43,11 +43,11 @@ def test_defaut_setting
         req_terminate_debuggee
       end
     ensure
-      DEBUGGER__::INITIALIZE_DAP_MSGS[1][:arguments].delete :rdbgExtension
+      DEBUGGER__::INITIALIZE_DAP_MSGS[1][:arguments].delete :rdbgExtensions
     end
 
     def test_call_event
-      DEBUGGER__::INITIALIZE_DAP_MSGS[1][:arguments][:rdbgExtension] = ["traceInspector"]
+      DEBUGGER__::INITIALIZE_DAP_MSGS[1][:arguments][:rdbgExtensions] = ["traceInspector"]
       run_protocol_scenario(PROGRAM, cdp: false) do
         req_rdbgTraceInspector_trace_enable(events: ['traceCall'])
         req_add_breakpoint 5
@@ -65,11 +65,11 @@ def test_call_event
         req_terminate_debuggee
       end
     ensure
-      DEBUGGER__::INITIALIZE_DAP_MSGS[1][:arguments].delete :rdbgExtension
+      DEBUGGER__::INITIALIZE_DAP_MSGS[1][:arguments].delete :rdbgExtensions
     end
 
     def test_return_event
-      DEBUGGER__::INITIALIZE_DAP_MSGS[1][:arguments][:rdbgExtension] = ["traceInspector"]
+      DEBUGGER__::INITIALIZE_DAP_MSGS[1][:arguments][:rdbgExtensions] = ["traceInspector"]
       run_protocol_scenario(PROGRAM, cdp: false) do
         req_rdbgTraceInspector_trace_enable(events: ['traceReturn'])
         req_add_breakpoint 5
@@ -88,11 +88,11 @@ def test_return_event
         req_terminate_debuggee
       end
     ensure
-      DEBUGGER__::INITIALIZE_DAP_MSGS[1][:arguments].delete :rdbgExtension
+      DEBUGGER__::INITIALIZE_DAP_MSGS[1][:arguments].delete :rdbgExtensions
     end
 
     def test_line_event
-      DEBUGGER__::INITIALIZE_DAP_MSGS[1][:arguments][:rdbgExtension] = ["traceInspector"]
+      DEBUGGER__::INITIALIZE_DAP_MSGS[1][:arguments][:rdbgExtensions] = ["traceInspector"]
       run_protocol_scenario(PROGRAM, cdp: false) do
         req_rdbgTraceInspector_trace_enable(events: ['traceLine'])
         req_add_breakpoint 5
@@ -109,11 +109,11 @@ def test_line_event
         req_terminate_debuggee
       end
     ensure
-      DEBUGGER__::INITIALIZE_DAP_MSGS[1][:arguments].delete :rdbgExtension
+      DEBUGGER__::INITIALIZE_DAP_MSGS[1][:arguments].delete :rdbgExtensions
     end
 
     def test_restart_trace
-      DEBUGGER__::INITIALIZE_DAP_MSGS[1][:arguments][:rdbgExtension] = ["traceInspector"]
+      DEBUGGER__::INITIALIZE_DAP_MSGS[1][:arguments][:rdbgExtensions] = ["traceInspector"]
       run_protocol_scenario(PROGRAM, cdp: false) do
         req_rdbgTraceInspector_trace_enable
         req_rdbgTraceInspector_trace_disable
@@ -132,7 +132,7 @@ def test_restart_trace
         req_terminate_debuggee
       end
     ensure
-      DEBUGGER__::INITIALIZE_DAP_MSGS[1][:arguments].delete :rdbgExtension
+      DEBUGGER__::INITIALIZE_DAP_MSGS[1][:arguments].delete :rdbgExtensions
     end
   end
 
@@ -150,7 +150,7 @@ class RdbgTraceInspectorRecordTest < ProtocolTestCase
     RUBY
 
     def test_defaut_setting
-      DEBUGGER__::INITIALIZE_DAP_MSGS[1][:arguments][:rdbgExtension] = ["traceInspector"]
+      DEBUGGER__::INITIALIZE_DAP_MSGS[1][:arguments][:rdbgExtensions] = ["traceInspector"]
       run_protocol_scenario(PROGRAM, cdp: false) do
         req_rdbgTraceInspector_record_enable
         req_add_breakpoint 5
@@ -178,11 +178,11 @@ def test_defaut_setting
         req_terminate_debuggee
       end
     ensure
-      DEBUGGER__::INITIALIZE_DAP_MSGS[1][:arguments].delete :rdbgExtension
+      DEBUGGER__::INITIALIZE_DAP_MSGS[1][:arguments].delete :rdbgExtensions
     end
 
     def test_restart_trace
-      DEBUGGER__::INITIALIZE_DAP_MSGS[1][:arguments][:rdbgExtension] = ["traceInspector"]
+      DEBUGGER__::INITIALIZE_DAP_MSGS[1][:arguments][:rdbgExtensions] = ["traceInspector"]
       run_protocol_scenario(PROGRAM, cdp: false) do
         req_rdbgTraceInspector_record_enable
         req_rdbgTraceInspector_record_disable
@@ -212,7 +212,7 @@ def test_restart_trace
         req_terminate_debuggee
       end
     ensure
-      DEBUGGER__::INITIALIZE_DAP_MSGS[1][:arguments].delete :rdbgExtension
+      DEBUGGER__::INITIALIZE_DAP_MSGS[1][:arguments].delete :rdbgExtensions
     end
   end
 end