diff --git a/internal/interceptor.go b/internal/interceptor.go
index db110074c..c7848ad2b 100644
--- a/internal/interceptor.go
+++ b/internal/interceptor.go
@@ -249,6 +249,8 @@ type WorkflowOutboundInterceptor interface {
 	NewTimer(ctx Context, d time.Duration) Future
 
 	// NewTimer intercepts workflow.NewTimerWithOptions.
+	//
+	// NOTE: Experimental
 	NewTimerWithOptions(ctx Context, d time.Duration, options TimerOptions) Future
 
 	// Sleep intercepts workflow.Sleep.
@@ -331,7 +333,8 @@ type WorkflowOutboundInterceptor interface {
 	//
 	// NOTE: Experimental
 	ExecuteNexusOperation(ctx Context, input ExecuteNexusOperationInput) NexusOperationFuture
-	// RequestCancelNexusOperation intercepts Nexus Operation cancelation via context.
+
+	// RequestCancelNexusOperation intercepts Nexus Operation cancellation via context.
 	//
 	// NOTE: Experimental
 	RequestCancelNexusOperation(ctx Context, input RequestCancelNexusOperationInput)
diff --git a/internal/interceptor_base.go b/internal/interceptor_base.go
index c4465faf9..f99295707 100644
--- a/internal/interceptor_base.go
+++ b/internal/interceptor_base.go
@@ -259,6 +259,8 @@ func (w *WorkflowOutboundInterceptorBase) NewTimer(ctx Context, d time.Duration)
 }
 
 // NewTimerWithOptions implements WorkflowOutboundInterceptor.NewTimerWithOptions.
+//
+// NOTE: Experimental
 func (w *WorkflowOutboundInterceptorBase) NewTimerWithOptions(
 	ctx Context,
 	d time.Duration,
diff --git a/internal/workflow.go b/internal/workflow.go
index 0f3223f9e..55c27c543 100644
--- a/internal/workflow.go
+++ b/internal/workflow.go
@@ -448,6 +448,8 @@ type (
 	}
 
 	// TimerOptions are options set when creating a timer.
+	//
+	// NOTE: Experimental
 	TimerOptions struct {
 		// Summary is a simple string identifying this timer. While it can be
 		// normal text, it is best to treat as a timer ID. This value will be
diff --git a/workflow/deterministic_wrappers.go b/workflow/deterministic_wrappers.go
index 0a4c78d7e..dbe8dde3c 100644
--- a/workflow/deterministic_wrappers.go
+++ b/workflow/deterministic_wrappers.go
@@ -69,6 +69,8 @@ type (
 	Semaphore = internal.Semaphore
 
 	// TimerOptions are options for [NewTimerWithOptions]
+	//
+	// NOTE: Experimental
 	TimerOptions = internal.TimerOptions
 )
 
@@ -199,6 +201,8 @@ func NewTimer(ctx Context, d time.Duration) Future {
 // use this NewTimerWithOptions() to get the timer, instead of Go's timer.NewTimer(). You can cancel the pending timer
 // by canceling the Context (using the context from workflow.WithCancel(ctx)) and that will cancel the timer. After the
 // timer is canceled, the returned Future becomes ready, and Future.Get() will return *CanceledError.
+//
+// NOTE: Experimental
 func NewTimerWithOptions(ctx Context, d time.Duration, options TimerOptions) Future {
 	return internal.NewTimerWithOptions(ctx, d, options)
 }