diff --git a/meson.build b/meson.build
index 3b88c46f..276ec0f3 100644
--- a/meson.build
+++ b/meson.build
@@ -115,6 +115,7 @@ vst3_plugin_sources = [
   'src/common/serialization/vst3/component-handler/component-handler-2.cpp',
   'src/common/serialization/vst3/component-handler/component-handler-3.cpp',
   'src/common/serialization/vst3/component-handler/component-handler-bus-activation.cpp',
+  'src/common/serialization/vst3/component-handler/progress.cpp',
   'src/common/serialization/vst3/component-handler/unit-handler.cpp',
   'src/common/serialization/vst3/component-handler/unit-handler-2.cpp',
   'src/common/serialization/vst3/context-menu/context-menu.cpp',
@@ -200,6 +201,7 @@ if with_vst3
     'src/common/serialization/vst3/component-handler/component-handler-2.cpp',
     'src/common/serialization/vst3/component-handler/component-handler-3.cpp',
     'src/common/serialization/vst3/component-handler/component-handler-bus-activation.cpp',
+    'src/common/serialization/vst3/component-handler/progress.cpp',
     'src/common/serialization/vst3/component-handler/unit-handler.cpp',
     'src/common/serialization/vst3/component-handler/unit-handler-2.cpp',
     'src/common/serialization/vst3/context-menu/context-menu.cpp',
diff --git a/src/common/serialization/vst3/README.md b/src/common/serialization/vst3/README.md
index 9ae0cbbc..d8b7f328 100644
--- a/src/common/serialization/vst3/README.md
+++ b/src/common/serialization/vst3/README.md
@@ -55,6 +55,7 @@ VST3 host interfaces are implemented as follows:
 | `YaComponentHandler2`             | `Vst3ComponentHandlerProxy` | `IComponentHandler2`             |
 | `YaComponentHandler3`             | `Vst3ComponentHandlerProxy` | `IComponentHandler3`             |
 | `YaComponentHandlerBusActivation` | `Vst3ComponentHandlerProxy` | `IComponentHandlerBusActivation` |
+| `YaProgress`                      | `Vst3ComponentHandlerProxy` | `IProgress`                      |
 | `YaUnitHandler`                   | `Vst3ComponentHandlerProxy` | `IUnitHandler`                   |
 | `YaUnitHandler2`                  | `Vst3ComponentHandlerProxy` | `IUnitHandler2`                  |
 | `Vst3ContextMenuProxy`            |                             | All of the below:                |
diff --git a/src/common/serialization/vst3/component-handler/progress.cpp b/src/common/serialization/vst3/component-handler/progress.cpp
new file mode 100644
index 00000000..d66b4c3f
--- /dev/null
+++ b/src/common/serialization/vst3/component-handler/progress.cpp
@@ -0,0 +1,26 @@
+// 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 "progress.h"
+
+YaProgress::ConstructArgs::ConstructArgs() {}
+
+YaProgress::ConstructArgs::ConstructArgs(
+    Steinberg::IPtr<Steinberg::FUnknown> object)
+    : supported(Steinberg::FUnknownPtr<Steinberg::Vst::IProgress>(object)) {}
+
+YaProgress::YaProgress(const ConstructArgs&& args)
+    : arguments(std::move(args)) {}
diff --git a/src/common/serialization/vst3/component-handler/progress.h b/src/common/serialization/vst3/component-handler/progress.h
new file mode 100644
index 00000000..e73ce012
--- /dev/null
+++ b/src/common/serialization/vst3/component-handler/progress.h
@@ -0,0 +1,76 @@
+// 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/vst/ivsteditcontroller.h>
+
+#include "../../common.h"
+#include "../base.h"
+
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wnon-virtual-dtor"
+
+/**
+ * Wraps around `IProgress` for serialization purposes. This is instantiated as
+ * part of `Vst3ComponentHandlerProxy`.
+ */
+class YaProgress : public Steinberg::Vst::IProgress {
+   public:
+    /**
+     * These are the arguments for creating a `YaProgress`.
+     */
+    struct ConstructArgs {
+        ConstructArgs();
+
+        /**
+         * Check whether an existing implementation implements `IProgress`
+         * 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.
+     */
+    YaProgress(const ConstructArgs&& args);
+
+    inline bool supported() const { return arguments.supported; }
+
+    virtual tresult PLUGIN_API
+    start(ProgressType type,
+          const Steinberg::tchar* optionalDescription,
+          ID& outID) override = 0;
+    virtual tresult PLUGIN_API
+    update(ID id, Steinberg::Vst::ParamValue normValue) override = 0;
+    virtual tresult PLUGIN_API finish(ID id) override = 0;
+
+   protected:
+    ConstructArgs arguments;
+};
+
+#pragma GCC diagnostic pop
diff --git a/src/common/serialization/vst3/component-handler/unit-handler-2.h b/src/common/serialization/vst3/component-handler/unit-handler-2.h
index c0db9ef0..427a32a1 100644
--- a/src/common/serialization/vst3/component-handler/unit-handler-2.h
+++ b/src/common/serialization/vst3/component-handler/unit-handler-2.h
@@ -26,7 +26,7 @@
 
 /**
  * Wraps around `IUnitHandler2` for serialization purposes. This is instantiated
- * as part of `Vst3UnitHandler2Proxy`.
+ * as part of `Vst3ComponentHandlerProxy`.
  */
 class YaUnitHandler2 : public Steinberg::Vst::IUnitHandler2 {
    public:
diff --git a/src/common/serialization/vst3/component-handler/unit-handler.h b/src/common/serialization/vst3/component-handler/unit-handler.h
index 00e1e73c..47aa3f23 100644
--- a/src/common/serialization/vst3/component-handler/unit-handler.h
+++ b/src/common/serialization/vst3/component-handler/unit-handler.h
@@ -26,7 +26,7 @@
 
 /**
  * Wraps around `IUnitHandler` for serialization purposes. This is instantiated
- * as part of `Vst3UnitHandlerProxy`.
+ * as part of `Vst3ComponentHandlerProxy`.
  */
 class YaUnitHandler : public Steinberg::Vst::IUnitHandler {
    public: