diff --git a/lib/debug/server_dap.rb b/lib/debug/server_dap.rb
index 6000ede45..25abec5d1 100644
--- a/lib/debug/server_dap.rb
+++ b/lib/debug/server_dap.rb
@@ -361,6 +361,7 @@ def process
             end
           end
 
+          SESSION.clear_all_breakpoints
           send_response req
 
         ## control
diff --git a/lib/debug/session.rb b/lib/debug/session.rb
index f60899751..e3126b753 100644
--- a/lib/debug/session.rb
+++ b/lib/debug/session.rb
@@ -1386,6 +1386,10 @@ def clear_catch_breakpoints *exception_names
       end
     end
 
+    def clear_all_breakpoints
+      clear_breakpoints{true}
+    end
+
     def add_iseq_breakpoint iseq, **kw
       bp = ISeqBreakpoint.new(iseq, [:line], **kw)
       add_bp bp