diff --git a/plugins/vst/SfizzVstController.cpp b/plugins/vst/SfizzVstController.cpp
index 4a788a50..a3d38f07 100644
--- a/plugins/vst/SfizzVstController.cpp
+++ b/plugins/vst/SfizzVstController.cpp
@@ -191,6 +191,20 @@ tresult PLUGIN_API SfizzVstControllerNoUi::getKeyswitchInfo(int32 busIndex, int1
     return kResultTrue;
 }
 
+tresult PLUGIN_API SfizzVstControllerNoUi::beginEditFromHost(Vst::ParamID paramID)
+{
+    // Note(jpc) implementing this interface is a workaround to make
+    //           non-automatable parameters editable in Ardour (as of 6.6)
+    (void)paramID;
+    return kResultTrue;
+}
+
+tresult PLUGIN_API SfizzVstControllerNoUi::endEditFromHost(Vst::ParamID paramID)
+{
+    (void)paramID;
+    return kResultTrue;
+}
+
 tresult PLUGIN_API SfizzVstControllerNoUi::getParamStringByValue(Vst::ParamID tag, Vst::ParamValue valueNormalized, Vst::String128 string)
 {
     switch (tag) {
diff --git a/plugins/vst/SfizzVstController.h b/plugins/vst/SfizzVstController.h
index cf0b0d7f..c26e4b18 100644
--- a/plugins/vst/SfizzVstController.h
+++ b/plugins/vst/SfizzVstController.h
@@ -23,7 +23,8 @@ using namespace VSTGUI;
 
 class SfizzVstControllerNoUi : public Vst::EditControllerEx1,
                                public Vst::IMidiMapping,
-                               public Vst::IKeyswitchController {
+                               public Vst::IKeyswitchController,
+                               public Vst::IEditControllerHostEditing {
 public:
     virtual ~SfizzVstControllerNoUi() {}
 
@@ -35,6 +36,9 @@ public:
     int32 PLUGIN_API getKeyswitchCount (int32 busIndex, int16 channel) override;
     tresult PLUGIN_API getKeyswitchInfo (int32 busIndex, int16 channel, int32 keySwitchIndex, Vst::KeyswitchInfo& info) override;
 
+    tresult PLUGIN_API beginEditFromHost(Vst::ParamID paramID) override;
+    tresult PLUGIN_API endEditFromHost(Vst::ParamID paramID) override;
+
     tresult PLUGIN_API getParamStringByValue(Vst::ParamID tag, Vst::ParamValue valueNormalized, Vst::String128 string) override;
     tresult PLUGIN_API getParamValueByString(Vst::ParamID tag, Vst::TChar* string, Vst::ParamValue& valueNormalized) override;
 
@@ -47,6 +51,7 @@ public:
     DEFINE_INTERFACES
     DEF_INTERFACE(Vst::IMidiMapping)
     DEF_INTERFACE(Vst::IKeyswitchController)
+    DEF_INTERFACE(Vst::IEditControllerHostEditing)
     END_DEFINE_INTERFACES(Vst::EditControllerEx1)
     REFCOUNT_METHODS(Vst::EditControllerEx1)