diff --git a/src/cascadia/TerminalCore/Terminal.hpp b/src/cascadia/TerminalCore/Terminal.hpp
index 01b6db5362..5cd511fe64 100644
--- a/src/cascadia/TerminalCore/Terminal.hpp
+++ b/src/cascadia/TerminalCore/Terminal.hpp
@@ -155,6 +155,7 @@ public:
     bool IsVtInputEnabled() const noexcept override;
     void NotifyAccessibilityChange(const til::rect& changedRect) noexcept override;
     void NotifyBufferRotation(const int delta) override;
+    void NotifyShellIntegrationMark() override;
 
     void InvokeCompletions(std::wstring_view menuJson, unsigned int replaceLength) override;
 
diff --git a/src/cascadia/TerminalCore/TerminalApi.cpp b/src/cascadia/TerminalCore/TerminalApi.cpp
index 7d8a706274..8e9ee2603c 100644
--- a/src/cascadia/TerminalCore/TerminalApi.cpp
+++ b/src/cascadia/TerminalCore/TerminalApi.cpp
@@ -404,3 +404,9 @@ void Terminal::NotifyBufferRotation(const int delta)
         _NotifyScrollEvent();
     }
 }
+
+void Terminal::NotifyShellIntegrationMark()
+{
+    // Notify the scrollbar that marks have been added so it can refresh the mark indicators
+    _NotifyScrollEvent();
+}
diff --git a/src/host/outputStream.cpp b/src/host/outputStream.cpp
index 3e8219a9bb..3fb736b324 100644
--- a/src/host/outputStream.cpp
+++ b/src/host/outputStream.cpp
@@ -446,6 +446,11 @@ void ConhostInternalGetSet::NotifyBufferRotation(const int delta)
     }
 }
 
+void ConhostInternalGetSet::NotifyShellIntegrationMark()
+{
+    // Not implemented for conhost - shell integration marks are a Terminal app feature.
+}
+
 void ConhostInternalGetSet::InvokeCompletions(std::wstring_view /*menuJson*/, unsigned int /*replaceLength*/)
 {
     // Not implemented for conhost.
diff --git a/src/host/outputStream.hpp b/src/host/outputStream.hpp
index 7b76e5f3d0..cfb1c85f16 100644
--- a/src/host/outputStream.hpp
+++ b/src/host/outputStream.hpp
@@ -67,6 +67,7 @@ public:
 
     void NotifyAccessibilityChange(const til::rect& changedRect) override;
     void NotifyBufferRotation(const int delta) override;
+    void NotifyShellIntegrationMark() override;
 
     void InvokeCompletions(std::wstring_view menuJson, unsigned int replaceLength) override;
 
diff --git a/src/terminal/adapter/ITerminalApi.hpp b/src/terminal/adapter/ITerminalApi.hpp
index 532133f9a8..3ce0e5c83d 100644
--- a/src/terminal/adapter/ITerminalApi.hpp
+++ b/src/terminal/adapter/ITerminalApi.hpp
@@ -86,6 +86,7 @@ namespace Microsoft::Console::VirtualTerminal
 
         virtual void NotifyAccessibilityChange(const til::rect& changedRect) = 0;
         virtual void NotifyBufferRotation(const int delta) = 0;
+        virtual void NotifyShellIntegrationMark() = 0;
 
         virtual void InvokeCompletions(std::wstring_view menuJson, unsigned int replaceLength) = 0;
 
diff --git a/src/terminal/adapter/adaptDispatch.cpp b/src/terminal/adapter/adaptDispatch.cpp
index 7f22596c40..2a9801f639 100644
--- a/src/terminal/adapter/adaptDispatch.cpp
+++ b/src/terminal/adapter/adaptDispatch.cpp
@@ -3594,6 +3594,7 @@ void AdaptDispatch::DoConEmuAction(const std::wstring_view string)
     else if (subParam == 12)
     {
         _pages.ActivePage().Buffer().StartCommand();
+        _api.NotifyShellIntegrationMark();
     }
 }
 
@@ -3624,6 +3625,7 @@ void AdaptDispatch::DoITerm2Action(const std::wstring_view string)
     if (action == L"SetMark")
     {
         _pages.ActivePage().Buffer().StartPrompt();
+        _api.NotifyShellIntegrationMark();
     }
 }
 
@@ -3657,16 +3659,19 @@ void AdaptDispatch::DoFinalTermAction(const std::wstring_view string)
         case L'A': // FTCS_PROMPT
         {
             _pages.ActivePage().Buffer().StartPrompt();
+            _api.NotifyShellIntegrationMark();
             break;
         }
         case L'B': // FTCS_COMMAND_START
         {
             _pages.ActivePage().Buffer().StartCommand();
+            _api.NotifyShellIntegrationMark();
             break;
         }
         case L'C': // FTCS_COMMAND_EXECUTED
         {
             _pages.ActivePage().Buffer().StartOutput();
+            _api.NotifyShellIntegrationMark();
             break;
         }
         case L'D': // FTCS_COMMAND_FINISHED
@@ -3687,6 +3692,7 @@ void AdaptDispatch::DoFinalTermAction(const std::wstring_view string)
             }
 
             _pages.ActivePage().Buffer().EndCurrentCommand(error);
+            _api.NotifyShellIntegrationMark();
 
             break;
         }
diff --git a/src/terminal/adapter/ut_adapter/adapterTest.cpp b/src/terminal/adapter/ut_adapter/adapterTest.cpp
index a6eecb6b37..5821bb28ae 100644
--- a/src/terminal/adapter/ut_adapter/adapterTest.cpp
+++ b/src/terminal/adapter/ut_adapter/adapterTest.cpp
@@ -212,6 +212,11 @@ public:
         Log::Comment(L"NotifyBufferRotation MOCK called...");
     }
 
+    void NotifyShellIntegrationMark() override
+    {
+        Log::Comment(L"NotifyShellIntegrationMark MOCK called...");
+    }
+
     void InvokeCompletions(std::wstring_view menuJson, unsigned int replaceLength) override
     {
         Log::Comment(L"InvokeCompletions MOCK called...");