diff --git a/meson.build b/meson.build
index c4239614..0f7fb897 100644
--- a/meson.build
+++ b/meson.build
@@ -120,6 +120,7 @@ vst3_plugin_sources = [
   'src/common/serialization/vst3/host-context/host-application.cpp',
   'src/common/serialization/vst3/plug-view/parameter-finder.cpp',
   'src/common/serialization/vst3/plug-view/plug-view.cpp',
+  'src/common/serialization/vst3/plug-view/plug-view-content-scale-support.cpp',
   'src/common/serialization/vst3/plug-frame/plug-frame.cpp',
   'src/common/serialization/vst3/plugin/audio-presentation-latency.cpp',
   'src/common/serialization/vst3/plugin/audio-processor.cpp',
@@ -198,6 +199,7 @@ if with_vst3
     'src/common/serialization/vst3/host-context/host-application.cpp',
     'src/common/serialization/vst3/plug-view/parameter-finder.cpp',
     'src/common/serialization/vst3/plug-view/plug-view.cpp',
+    'src/common/serialization/vst3/plug-view/plug-view-content-scale-support.cpp',
     'src/common/serialization/vst3/plug-frame/plug-frame.cpp',
     'src/common/serialization/vst3/plugin/audio-presentation-latency.cpp',
     'src/common/serialization/vst3/plugin/audio-processor.cpp',
diff --git a/src/common/serialization/vst3/README.md b/src/common/serialization/vst3/README.md
index 47b1a2be..1b30c3fe 100644
--- a/src/common/serialization/vst3/README.md
+++ b/src/common/serialization/vst3/README.md
@@ -6,7 +6,7 @@ for more information on how the serialization works.
 
 The following interfaces are not yet implemented:
 
-- Interfaces introduced after VST 3.6.5
+- Interfaces introduced after VST 3.6.6
 - The [Presonus extensions](https://presonussoftware.com/en_US/developer),
   although most of these things seem to overlap with newer VST3 interfaces
 
@@ -19,6 +19,7 @@ VST3 plugin interfaces are implemented as follows:
 | `Vst3PlugViewProxy`             |                     | All of the below:                                      |
 | `YaParameterFinder`             | `Vst3PlugViewProxy` | `IParameterFinder`                                     |
 | `YaPlugView`                    | `Vst3PlugViewProxy` | `IPlugView`                                            |
+| `YaPlugViewContentScaleSupport` | `Vst3PlugViewProxy` | `IPlugViewContentScaleSupport`                         |
 | `Vst3PluginProxy`               |                     | All of the below:                                      |
 | `YaAudioPresentationLatency`    | `Vst3PluginProxy`   | `IAudioPresentationLatency`                            |
 | `YaAudioProcessor`              | `Vst3PluginProxy`   | `IAudioProcessor`                                      |
diff --git a/src/common/serialization/vst3/plug-view/parameter-finder.h b/src/common/serialization/vst3/plug-view/parameter-finder.h
index fdfca513..95c405dd 100644
--- a/src/common/serialization/vst3/plug-view/parameter-finder.h
+++ b/src/common/serialization/vst3/plug-view/parameter-finder.h
@@ -26,7 +26,7 @@
 
 /**
  * Wraps around `IParameterFinder` for serialization purposes. This is
- * instantiated as part of `Vst3ParameterFinderProxy`.
+ * instantiated as part of `Vst3PlugViewProxy`.
  */
 class YaParameterFinder : public Steinberg::Vst::IParameterFinder {
    public:
diff --git a/src/common/serialization/vst3/plug-view/plug-view-content-scale-support.cpp b/src/common/serialization/vst3/plug-view/plug-view-content-scale-support.cpp
new file mode 100644
index 00000000..516474f7
--- /dev/null
+++ b/src/common/serialization/vst3/plug-view/plug-view-content-scale-support.cpp
@@ -0,0 +1,28 @@
+// yabridge: a Wine VST bridge
+// Copyright (C) 2020-2021 Robbert van der Helm
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+#include "plug-view-content-scale-support.h"
+
+YaPlugViewContentScaleSupport::ConstructArgs::ConstructArgs() {}
+
+YaPlugViewContentScaleSupport::ConstructArgs::ConstructArgs(
+    Steinberg::IPtr<Steinberg::FUnknown> object)
+    : supported(Steinberg::FUnknownPtr<Steinberg::IPlugViewContentScaleSupport>(
+          object)) {}
+
+YaPlugViewContentScaleSupport::YaPlugViewContentScaleSupport(
+    const ConstructArgs&& args)
+    : arguments(std::move(args)) {}
diff --git a/src/common/serialization/vst3/plug-view/plug-view-content-scale-support.h b/src/common/serialization/vst3/plug-view/plug-view-content-scale-support.h
new file mode 100644
index 00000000..c23fc0b6
--- /dev/null
+++ b/src/common/serialization/vst3/plug-view/plug-view-content-scale-support.h
@@ -0,0 +1,72 @@
+// yabridge: a Wine VST bridge
+// Copyright (C) 2020-2021 Robbert van der Helm
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+#pragma once
+
+#include <pluginterfaces/gui/iplugviewcontentscalesupport.h>
+
+#include "../../common.h"
+#include "../base.h"
+
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wnon-virtual-dtor"
+
+/**
+ * Wraps around `IPlugViewContentScaleSupport` for serialization purposes. This
+ * is instantiated as part of `Vst3PlugViewProxy`.
+ */
+class YaPlugViewContentScaleSupport
+    : public Steinberg::IPlugViewContentScaleSupport {
+   public:
+    /**
+     * These are the arguments for creating a `YaPlugViewContentScaleSupport`.
+     */
+    struct ConstructArgs {
+        ConstructArgs();
+
+        /**
+         * Check whether an existing implementation implements
+         * `IPlugViewContentScaleSupport` and read arguments from it.
+         */
+        ConstructArgs(Steinberg::IPtr<Steinberg::FUnknown> object);
+
+        /**
+         * Whether the object supported this interface.
+         */
+        bool supported;
+
+        template <typename S>
+        void serialize(S& s) {
+            s.value1b(supported);
+        }
+    };
+
+    /**
+     * Instantiate this instance with arguments read from another interface
+     * implementation.
+     */
+    YaPlugViewContentScaleSupport(const ConstructArgs&& args);
+
+    inline bool supported() const { return arguments.supported; }
+
+    virtual tresult PLUGIN_API
+    setContentScaleFactor(ScaleFactor factor) override = 0;
+
+   protected:
+    ConstructArgs arguments;
+};
+
+#pragma GCC diagnostic pop