diff --git a/changelog/next.md b/changelog/next.md
index fd39091..850d452 100644
--- a/changelog/next.md
+++ b/changelog/next.md
@@ -1,5 +1,6 @@
 ## Other Changes
 
+- Added support for Qt 6.12
 - Added support for Hyprland's new workspace address format.
 
 ## Bug Fixes
diff --git a/src/services/pipewire/peak.hpp b/src/services/pipewire/peak.hpp
index c4af3c2..3465852 100644
--- a/src/services/pipewire/peak.hpp
+++ b/src/services/pipewire/peak.hpp
@@ -8,18 +8,12 @@
 #include <qvector.h>
 
 #include "node.hpp"
+#include "qml.hpp"
 
 namespace qs::service::pipewire {
 
-class PwNodeIface;
 class PwPeakStream;
 
-} // namespace qs::service::pipewire
-
-Q_DECLARE_OPAQUE_POINTER(qs::service::pipewire::PwNodeIface*);
-
-namespace qs::service::pipewire {
-
 ///! Monitors peak levels of an audio node.
 /// Tracks volume peaks for a node across all its channels.
 ///
diff --git a/src/wayland/hyprland/ipc/connection.cpp b/src/wayland/hyprland/ipc/connection.cpp
index 942270a..45d25da 100644
--- a/src/wayland/hyprland/ipc/connection.cpp
+++ b/src/wayland/hyprland/ipc/connection.cpp
@@ -37,6 +37,18 @@ QS_LOGGING_CATEGORY(logHyprlandIpc, "quickshell.hyprland.ipc", QtWarningMsg);
 QS_LOGGING_CATEGORY(logHyprlandIpcEvents, "quickshell.hyprland.ipc.events", QtWarningMsg);
 } // namespace
 
+QBindable<HyprlandMonitor*> HyprlandIpc::bindableFocusedMonitor() const {
+	return &this->bFocusedMonitor;
+}
+
+QBindable<HyprlandWorkspace*> HyprlandIpc::bindableFocusedWorkspace() const {
+	return &this->bFocusedWorkspace;
+}
+
+QBindable<HyprlandToplevel*> HyprlandIpc::bindableActiveToplevel() const {
+	return &this->bActiveToplevel;
+}
+
 HyprlandIpc::HyprlandIpc() {
 	auto his = qEnvironmentVariable("HYPRLAND_INSTANCE_SIGNATURE");
 	if (his.isEmpty()) {
diff --git a/src/wayland/hyprland/ipc/connection.hpp b/src/wayland/hyprland/ipc/connection.hpp
index 8d79184..c4264e9 100644
--- a/src/wayland/hyprland/ipc/connection.hpp
+++ b/src/wayland/hyprland/ipc/connection.hpp
@@ -25,9 +25,9 @@ class HyprlandToplevel;
 
 } // namespace qs::hyprland::ipc
 
-Q_DECLARE_OPAQUE_POINTER(qs::hyprland::ipc::HyprlandWorkspace*);
-Q_DECLARE_OPAQUE_POINTER(qs::hyprland::ipc::HyprlandMonitor*);
-Q_DECLARE_OPAQUE_POINTER(qs::hyprland::ipc::HyprlandToplevel*);
+Q_MOC_INCLUDE("hyprland_toplevel.hpp")
+Q_MOC_INCLUDE("monitor.hpp")
+Q_MOC_INCLUDE("workspace.hpp")
 
 namespace qs::hyprland::ipc {
 
@@ -83,17 +83,9 @@ public:
 
 	[[nodiscard]] QBindable<bool> bindableUsingLua() const { return &this->bUsingLua; }
 
-	[[nodiscard]] QBindable<HyprlandMonitor*> bindableFocusedMonitor() const {
-		return &this->bFocusedMonitor;
-	}
-
-	[[nodiscard]] QBindable<HyprlandWorkspace*> bindableFocusedWorkspace() const {
-		return &this->bFocusedWorkspace;
-	}
-
-	[[nodiscard]] QBindable<HyprlandToplevel*> bindableActiveToplevel() const {
-		return &this->bActiveToplevel;
-	}
+	[[nodiscard]] QBindable<HyprlandMonitor*> bindableFocusedMonitor() const;
+	[[nodiscard]] QBindable<HyprlandWorkspace*> bindableFocusedWorkspace() const;
+	[[nodiscard]] QBindable<HyprlandToplevel*> bindableActiveToplevel() const;
 
 	void setFocusedMonitor(HyprlandMonitor* monitor);
 
diff --git a/src/wayland/hyprland/ipc/hyprland_toplevel.cpp b/src/wayland/hyprland/ipc/hyprland_toplevel.cpp
index e02dcdc..1c25dda 100644
--- a/src/wayland/hyprland/ipc/hyprland_toplevel.cpp
+++ b/src/wayland/hyprland/ipc/hyprland_toplevel.cpp
@@ -8,6 +8,7 @@
 
 #include "../../toplevel/qml.hpp"
 #include "connection.hpp"
+#include "monitor.hpp"
 #include "toplevel_mapping.hpp"
 #include "workspace.hpp"
 
@@ -15,6 +16,10 @@ using namespace qs::wayland::toplevel;
 
 namespace qs::hyprland::ipc {
 
+QBindable<HyprlandWorkspace*> HyprlandToplevel::bindableWorkspace() { return &this->bWorkspace; }
+
+QBindable<HyprlandMonitor*> HyprlandToplevel::bindableMonitor() { return &this->bMonitor; }
+
 HyprlandToplevel::HyprlandToplevel(HyprlandIpc* ipc): QObject(ipc), ipc(ipc) {
 	this->bMonitor.setBinding([this]() {
 		return this->bWorkspace ? this->bWorkspace->bindableMonitor().value() : nullptr;
diff --git a/src/wayland/hyprland/ipc/hyprland_toplevel.hpp b/src/wayland/hyprland/ipc/hyprland_toplevel.hpp
index 8e6aadb..fe12626 100644
--- a/src/wayland/hyprland/ipc/hyprland_toplevel.hpp
+++ b/src/wayland/hyprland/ipc/hyprland_toplevel.hpp
@@ -81,10 +81,10 @@ public:
 		return &this->bLastIpcObject;
 	};
 
-	[[nodiscard]] QBindable<HyprlandWorkspace*> bindableWorkspace() { return &this->bWorkspace; }
+	[[nodiscard]] QBindable<HyprlandWorkspace*> bindableWorkspace();
 	void setWorkspace(HyprlandWorkspace* workspace);
 
-	[[nodiscard]] QBindable<HyprlandMonitor*> bindableMonitor() { return &this->bMonitor; }
+	[[nodiscard]] QBindable<HyprlandMonitor*> bindableMonitor();
 
 signals:
 	void addressChanged();
diff --git a/src/wayland/hyprland/ipc/monitor.cpp b/src/wayland/hyprland/ipc/monitor.cpp
index 7519a92..083dfcc 100644
--- a/src/wayland/hyprland/ipc/monitor.cpp
+++ b/src/wayland/hyprland/ipc/monitor.cpp
@@ -13,6 +13,10 @@ namespace qs::hyprland::ipc {
 
 QVariantMap HyprlandMonitor::lastIpcObject() const { return this->mLastIpcObject; }
 
+QBindable<HyprlandWorkspace*> HyprlandMonitor::bindableActiveWorkspace() const {
+	return &this->bActiveWorkspace;
+}
+
 void HyprlandMonitor::updateInitial(qint32 id, const QString& name, const QString& description) {
 	Qt::beginPropertyUpdateGroup();
 	this->bId = id;
diff --git a/src/wayland/hyprland/ipc/monitor.hpp b/src/wayland/hyprland/ipc/monitor.hpp
index b9ac434..d368adf 100644
--- a/src/wayland/hyprland/ipc/monitor.hpp
+++ b/src/wayland/hyprland/ipc/monitor.hpp
@@ -54,9 +54,7 @@ public:
 	[[nodiscard]] QBindable<qint32> bindableHeight() { return &this->bHeight; }
 	[[nodiscard]] QBindable<qreal> bindableScale() { return &this->bScale; }
 
-	[[nodiscard]] QBindable<HyprlandWorkspace*> bindableActiveWorkspace() const {
-		return &this->bActiveWorkspace;
-	}
+	[[nodiscard]] QBindable<HyprlandWorkspace*> bindableActiveWorkspace() const;
 
 	[[nodiscard]] QBindable<bool> bindableFocused() const { return &this->bFocused; }
 
diff --git a/src/wayland/hyprland/ipc/workspace.cpp b/src/wayland/hyprland/ipc/workspace.cpp
index a527d82..6205c81 100644
--- a/src/wayland/hyprland/ipc/workspace.cpp
+++ b/src/wayland/hyprland/ipc/workspace.cpp
@@ -15,6 +15,8 @@ namespace qs::hyprland::ipc {
 
 QVariantMap HyprlandWorkspace::lastIpcObject() const { return this->mLastIpcObject; }
 
+QBindable<HyprlandMonitor*> HyprlandWorkspace::bindableMonitor() { return &this->bMonitor; }
+
 HyprlandWorkspace::HyprlandWorkspace(HyprlandIpc* ipc): QObject(ipc), ipc(ipc) {
 	Qt::beginPropertyUpdateGroup();
 
diff --git a/src/wayland/hyprland/ipc/workspace.hpp b/src/wayland/hyprland/ipc/workspace.hpp
index 86e0426..d36c6ad 100644
--- a/src/wayland/hyprland/ipc/workspace.hpp
+++ b/src/wayland/hyprland/ipc/workspace.hpp
@@ -73,7 +73,7 @@ public:
 	[[nodiscard]] QBindable<bool> bindableFocused() { return &this->bFocused; }
 	[[nodiscard]] QBindable<bool> bindableUrgent() { return &this->bUrgent; }
 	[[nodiscard]] QBindable<bool> bindableHasFullscreen() { return &this->bHasFullscreen; }
-	[[nodiscard]] QBindable<HyprlandMonitor*> bindableMonitor() { return &this->bMonitor; }
+	[[nodiscard]] QBindable<HyprlandMonitor*> bindableMonitor();
 	[[nodiscard]] ObjectModel<HyprlandToplevel>* toplevels() { return &this->mToplevels; }
 
 	[[nodiscard]] QVariantMap lastIpcObject() const;
diff --git a/src/x11/i3/ipc/controller.cpp b/src/x11/i3/ipc/controller.cpp
index e4f32ff..dfb52b4 100644
--- a/src/x11/i3/ipc/controller.cpp
+++ b/src/x11/i3/ipc/controller.cpp
@@ -31,6 +31,14 @@ QS_LOGGING_CATEGORY(logI3Ipc, "quickshell.I3.ipc", QtWarningMsg);
 QS_LOGGING_CATEGORY(logI3IpcEvents, "quickshell.I3.ipc.events", QtWarningMsg);
 } // namespace
 
+QBindable<I3Monitor*> I3IpcController::bindableFocusedMonitor() const {
+	return &this->bFocusedMonitor;
+}
+
+QBindable<I3Workspace*> I3IpcController::bindableFocusedWorkspace() const {
+	return &this->bFocusedWorkspace;
+}
+
 I3IpcController::I3IpcController(): I3Ipc({"workspace", "output"}) {
 	// bind focused workspace to focused monitor's active workspace
 	this->bFocusedWorkspace.setBinding([this]() -> I3Workspace* {
diff --git a/src/x11/i3/ipc/controller.hpp b/src/x11/i3/ipc/controller.hpp
index 464f6f6..9e9d914 100644
--- a/src/x11/i3/ipc/controller.hpp
+++ b/src/x11/i3/ipc/controller.hpp
@@ -20,8 +20,8 @@ class I3Workspace;
 class I3Monitor;
 } // namespace qs::i3::ipc
 
-Q_DECLARE_OPAQUE_POINTER(qs::i3::ipc::I3Workspace*);
-Q_DECLARE_OPAQUE_POINTER(qs::i3::ipc::I3Monitor*);
+Q_MOC_INCLUDE("monitor.hpp")
+Q_MOC_INCLUDE("workspace.hpp")
 
 namespace qs::i3::ipc {
 
@@ -43,13 +43,8 @@ public:
 
 	I3Monitor* monitorFor(QuickshellScreenInfo* screen);
 
-	[[nodiscard]] QBindable<I3Monitor*> bindableFocusedMonitor() const {
-		return &this->bFocusedMonitor;
-	};
-
-	[[nodiscard]] QBindable<I3Workspace*> bindableFocusedWorkspace() const {
-		return &this->bFocusedWorkspace;
-	};
+	[[nodiscard]] QBindable<I3Monitor*> bindableFocusedMonitor() const;
+	[[nodiscard]] QBindable<I3Workspace*> bindableFocusedWorkspace() const;
 
 	[[nodiscard]] ObjectModel<I3Monitor>* monitors();
 	[[nodiscard]] ObjectModel<I3Workspace>* workspaces();
diff --git a/src/x11/i3/ipc/monitor.cpp b/src/x11/i3/ipc/monitor.cpp
index 7afb68e..17178b7 100644
--- a/src/x11/i3/ipc/monitor.cpp
+++ b/src/x11/i3/ipc/monitor.cpp
@@ -12,6 +12,10 @@
 
 namespace qs::i3::ipc {
 
+QBindable<I3Workspace*> I3Monitor::bindableActiveWorkspace() const {
+	return &this->bActiveWorkspace;
+}
+
 I3Monitor::I3Monitor(I3IpcController* ipc): QObject(ipc), ipc(ipc) {
 	// clang-format off
 	this->bFocused.setBinding([this]() { return this->ipc->bindableFocusedMonitor().value() == this; });
diff --git a/src/x11/i3/ipc/monitor.hpp b/src/x11/i3/ipc/monitor.hpp
index 3630460..54e834e 100644
--- a/src/x11/i3/ipc/monitor.hpp
+++ b/src/x11/i3/ipc/monitor.hpp
@@ -55,9 +55,7 @@ public:
 	[[nodiscard]] QBindable<qreal> bindableScale() { return &this->bScale; }
 	[[nodiscard]] QBindable<bool> bindableFocused() { return &this->bFocused; }
 
-	[[nodiscard]] QBindable<I3Workspace*> bindableActiveWorkspace() const {
-		return &this->bActiveWorkspace;
-	}
+	[[nodiscard]] QBindable<I3Workspace*> bindableActiveWorkspace() const;
 
 	[[nodiscard]] QVariantMap lastIpcObject() const;
 
diff --git a/src/x11/i3/ipc/workspace.cpp b/src/x11/i3/ipc/workspace.cpp
index 530f0a2..b9d5968 100644
--- a/src/x11/i3/ipc/workspace.cpp
+++ b/src/x11/i3/ipc/workspace.cpp
@@ -12,6 +12,8 @@
 
 namespace qs::i3::ipc {
 
+QBindable<I3Monitor*> I3Workspace::bindableMonitor() const { return &this->bMonitor; }
+
 I3Workspace::I3Workspace(I3IpcController* ipc): QObject(ipc), ipc(ipc) {
 	Qt::beginPropertyUpdateGroup();
 
diff --git a/src/x11/i3/ipc/workspace.hpp b/src/x11/i3/ipc/workspace.hpp
index c08e926..6c802e4 100644
--- a/src/x11/i3/ipc/workspace.hpp
+++ b/src/x11/i3/ipc/workspace.hpp
@@ -57,7 +57,7 @@ public:
 	[[nodiscard]] QBindable<bool> bindableActive() { return &this->bActive; }
 	[[nodiscard]] QBindable<bool> bindableFocused() { return &this->bFocused; }
 	[[nodiscard]] QBindable<bool> bindableUrgent() { return &this->bUrgent; }
-	[[nodiscard]] QBindable<I3Monitor*> bindableMonitor() const { return &this->bMonitor; }
+	[[nodiscard]] QBindable<I3Monitor*> bindableMonitor() const;
 	[[nodiscard]] QVariantMap lastIpcObject() const;
 
 	void updateFromObject(const QVariantMap& obj);