diff --git a/dap/adapter.go b/dap/adapter.go
index 68f27cdd..e462ab8c 100644
--- a/dap/adapter.go
+++ b/dap/adapter.go
@@ -156,6 +156,29 @@ func (d *Adapter[C]) Next(c Context, req *dap.NextRequest, resp *dap.NextRespons
 	return nil
 }
 
+func (d *Adapter[C]) StepIn(c Context, req *dap.StepInRequest, resp *dap.StepInResponse) error {
+	var (
+		subReq  dap.NextRequest
+		subResp dap.NextResponse
+	)
+
+	subReq.Arguments.ThreadId = req.Arguments.ThreadId
+	subReq.Arguments.SingleThread = req.Arguments.SingleThread
+	subReq.Arguments.Granularity = req.Arguments.Granularity
+	return d.Next(c, &subReq, &subResp)
+}
+
+func (d *Adapter[C]) StepOut(c Context, req *dap.StepOutRequest, resp *dap.StepOutResponse) error {
+	var (
+		subReq  dap.ContinueRequest
+		subResp dap.ContinueResponse
+	)
+
+	subReq.Arguments.ThreadId = req.Arguments.ThreadId
+	subReq.Arguments.SingleThread = req.Arguments.SingleThread
+	return d.Continue(c, &subReq, &subResp)
+}
+
 func (d *Adapter[C]) SetBreakpoints(c Context, req *dap.SetBreakpointsRequest, resp *dap.SetBreakpointsResponse) error {
 	resp.Body.Breakpoints = d.breakpointMap.Set(req.Arguments.Source.Path, req.Arguments.Breakpoints)
 	return nil
@@ -420,6 +443,8 @@ func (d *Adapter[C]) dapHandler() Handler {
 		Launch:            d.Launch,
 		Continue:          d.Continue,
 		Next:              d.Next,
+		StepIn:            d.StepIn,
+		StepOut:           d.StepOut,
 		SetBreakpoints:    d.SetBreakpoints,
 		ConfigurationDone: d.ConfigurationDone,
 		Disconnect:        d.Disconnect,
diff --git a/dap/handler.go b/dap/handler.go
index abe93aa7..798205a4 100644
--- a/dap/handler.go
+++ b/dap/handler.go
@@ -52,6 +52,8 @@ type Handler struct {
 	Terminate         HandlerFunc[*dap.TerminateRequest, *dap.TerminateResponse]
 	Continue          HandlerFunc[*dap.ContinueRequest, *dap.ContinueResponse]
 	Next              HandlerFunc[*dap.NextRequest, *dap.NextResponse]
+	StepIn            HandlerFunc[*dap.StepInRequest, *dap.StepInResponse]
+	StepOut           HandlerFunc[*dap.StepOutRequest, *dap.StepOutResponse]
 	Restart           HandlerFunc[*dap.RestartRequest, *dap.RestartResponse]
 	Threads           HandlerFunc[*dap.ThreadsRequest, *dap.ThreadsResponse]
 	StackTrace        HandlerFunc[*dap.StackTraceRequest, *dap.StackTraceResponse]
diff --git a/dap/server.go b/dap/server.go
index e7d44933..b57d30b0 100644
--- a/dap/server.go
+++ b/dap/server.go
@@ -119,6 +119,10 @@ func (s *Server) handleMessage(c Context, m dap.Message) (dap.ResponseMessage, e
 		return s.h.Continue.Do(c, req)
 	case *dap.NextRequest:
 		return s.h.Next.Do(c, req)
+	case *dap.StepInRequest:
+		return s.h.StepIn.Do(c, req)
+	case *dap.StepOutRequest:
+		return s.h.StepOut.Do(c, req)
 	case *dap.RestartRequest:
 		return s.h.Restart.Do(c, req)
 	case *dap.ThreadsRequest: