diff --git a/src/controllers/midi/midimessage.cpp b/src/controllers/midi/midimessage.cpp
index a4f5b6838a29..f6e227c4a237 100644
--- a/src/controllers/midi/midimessage.cpp
+++ b/src/controllers/midi/midimessage.cpp
@@ -5,7 +5,7 @@ QDebug operator<<(QDebug debug, MidiOpCode midiOpCode) {
     return debug;
 }
 
-uint qHash(MidiOpCode key, uint seed) {
+qhash_seed_t qHash(MidiOpCode key, qhash_seed_t seed) {
     return qHash(static_cast<uint8_t>(key), seed);
 }
 
diff --git a/src/controllers/midi/midimessage.h b/src/controllers/midi/midimessage.h
index 38685deda47b..e70a10c1ce59 100644
--- a/src/controllers/midi/midimessage.h
+++ b/src/controllers/midi/midimessage.h
@@ -8,6 +8,7 @@
 #include <cstdint>
 
 #include "preferences/usersettings.h"
+#include "util/compatibility/qhash.h"
 
 // The second value of each OpCode will be the channel number the message
 // corresponds to.  So 0xB0 is a CC on the first channel, and 0xB1 is a CC
@@ -96,7 +97,7 @@ enum class MidiOpCode : uint8_t {
     SystemReset = 0xFF,
 };
 QDebug operator<<(QDebug debug, MidiOpCode midiOpCode);
-uint qHash(MidiOpCode key, uint seed);
+qhash_seed_t qHash(MidiOpCode key, qhash_seed_t seed);
 
 enum class MidiOption : uint16_t {
     None = 0x0000,
diff --git a/src/effects/defs.h b/src/effects/defs.h
index 6393cf4b3293..9ea6639cdca5 100644
--- a/src/effects/defs.h
+++ b/src/effects/defs.h
@@ -1,8 +1,10 @@
 #pragma once
-#include "util/memory.h"
-#include "engine/channelhandle.h"
-#include <array>
 #include <QSharedPointer>
+#include <array>
+
+#include "engine/channelhandle.h"
+#include "util/compatibility/qhash.h"
+#include "util/memory.h"
 
 enum class EffectEnableState {
     Disabled,
@@ -22,9 +24,9 @@ enum class SignalProcessingStage {
     Postfader
 };
 
-inline uint qHash(
+inline qhash_seed_t qHash(
         SignalProcessingStage stage,
-        uint seed = 0) {
+        qhash_seed_t seed = 0) {
     return qHash(static_cast<uint>(stage), seed);
 };
 
diff --git a/src/engine/channelhandle.h b/src/engine/channelhandle.h
index a9c685212733..240e5254f50c 100644
--- a/src/engine/channelhandle.h
+++ b/src/engine/channelhandle.h
@@ -7,6 +7,7 @@
 #include <memory>
 
 #include "util/assert.h"
+#include "util/compatibility/qhash.h"
 
 // ChannelHandle defines a unique identifier for channels of audio in the engine
 // (e.g. headphone output, master output, deck 1, microphone 3). Previously we
@@ -75,9 +76,9 @@ inline QDebug operator<<(QDebug stream, const ChannelHandle& h) {
     return stream;
 }
 
-inline uint qHash(
+inline qhash_seed_t qHash(
         const ChannelHandle& handle,
-        uint seed = 0) {
+        qhash_seed_t seed = 0) {
     return qHash(handle.handle(), seed);
 }
 
@@ -115,9 +116,9 @@ inline QDebug operator<<(QDebug stream, const ChannelHandleAndGroup& g) {
     return stream;
 }
 
-inline uint qHash(
+inline qhash_seed_t qHash(
         const ChannelHandleAndGroup& handleGroup,
-        uint seed = 0) {
+        qhash_seed_t seed = 0) {
     return qHash(handleGroup.handle(), seed);
 }
 
diff --git a/src/preferences/configobject.h b/src/preferences/configobject.h
index ef9b5ba8a6d4..fd80d9cc1795 100644
--- a/src/preferences/configobject.h
+++ b/src/preferences/configobject.h
@@ -1,14 +1,15 @@
 #pragma once
 
-#include <QString>
-#include <QKeySequence>
 #include <QDomNode>
-#include <QMap>
 #include <QHash>
+#include <QKeySequence>
+#include <QMap>
 #include <QMetaType>
 #include <QReadWriteLock>
+#include <QString>
 
 #include "util/assert.h"
+#include "util/compatibility/qhash.h"
 #include "util/debug.h"
 
 // Class for the key for a specific configuration element. A key consists of a
@@ -59,9 +60,9 @@ inline QDebug operator<<(QDebug stream, const ConfigKey& configKey) {
 }
 
 // QHash hash function for ConfigKey objects.
-inline uint qHash(
+inline qhash_seed_t qHash(
         const ConfigKey& key,
-        uint seed = 0) {
+        qhash_seed_t seed = 0) {
     return qHash(key.group, seed) ^
             qHash(key.item, seed);
 }
@@ -95,9 +96,9 @@ inline bool operator!=(const ConfigValue& lhs, const ConfigValue& rhs) {
     return !(lhs == rhs);
 }
 
-inline uint qHash(
+inline qhash_seed_t qHash(
         const ConfigValue& key,
-        uint seed = 0) {
+        qhash_seed_t seed = 0) {
     return qHash(key.value.toUpper(), seed);
 }
 
diff --git a/src/soundio/soundmanagerutil.h b/src/soundio/soundmanagerutil.h
index dddb140795a5..c5e1a555b4f5 100644
--- a/src/soundio/soundmanagerutil.h
+++ b/src/soundio/soundmanagerutil.h
@@ -6,6 +6,7 @@
 #include <QString>
 #include <QtDebug>
 
+#include "util/compatibility/qhash.h"
 #include "util/fifo.h"
 #include "util/types.h"
 
@@ -21,9 +22,9 @@ class ChannelGroup {
         return (m_channels << 8) |
                 m_channelBase;
     }
-    friend uint qHash(
+    friend qhash_seed_t qHash(
             const ChannelGroup& group,
-            uint seed = 0) {
+            qhash_seed_t seed = 0) {
         return qHash(group.hashValue(), seed);
     }
 
@@ -96,9 +97,9 @@ class AudioPath {
         return (m_type << 8) |
                 m_index;
     }
-    friend uint qHash(
+    friend qhash_seed_t qHash(
             const AudioPath& path,
-            uint seed = 0) {
+            qhash_seed_t seed = 0) {
         return qHash(path.hashValue(), seed);
     }
 
@@ -273,9 +274,9 @@ inline bool operator<(const SoundDeviceId& lhs, const SoundDeviceId& rhs) {
 
 Q_DECLARE_METATYPE(SoundDeviceId);
 
-inline uint qHash(
+inline qhash_seed_t qHash(
         const SoundDeviceId& id,
-        uint seed = 0) {
+        qhash_seed_t seed = 0) {
     return qHash(id.name, seed) ^
             qHash(id.alsaHwDevice, seed) ^
             qHash(id.portAudioIndex, seed);
diff --git a/src/track/trackref.h b/src/track/trackref.h
index 4288a0c669be..a2635af6b0c7 100644
--- a/src/track/trackref.h
+++ b/src/track/trackref.h
@@ -1,6 +1,7 @@
 #pragma once
 
 #include "track/trackid.h"
+#include "util/compatibility/qhash.h"
 #include "util/fileinfo.h"
 
 // A track in the library is identified by a location and an id.
@@ -128,9 +129,9 @@ std::ostream& operator<<(std::ostream& os, const TrackRef& trackRef);
 
 QDebug operator<<(QDebug debug, const TrackRef& trackRef);
 
-inline uint qHash(
+inline qhash_seed_t qHash(
         const TrackRef& key,
-        uint seed = 0) {
+        qhash_seed_t seed = 0) {
     return qHash(
             key.getLocation(), seed) ^
             qHash(key.getId(), seed);
diff --git a/src/util/compatibility/qhash.h b/src/util/compatibility/qhash.h
new file mode 100644
index 000000000000..367c84a64545
--- /dev/null
+++ b/src/util/compatibility/qhash.h
@@ -0,0 +1,7 @@
+#pragma once
+
+#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
+typedef size_t qhash_seed_t;
+#else
+typedef uint qhash_seed_t;
+#endif
diff --git a/src/util/db/dbid.h b/src/util/db/dbid.h
index a5d68f4a8f7b..15749fe23d74 100644
--- a/src/util/db/dbid.h
+++ b/src/util/db/dbid.h
@@ -1,16 +1,14 @@
 #pragma once
 
-
-#include <functional>
-#include <ostream>
-#include <utility>
-
 #include <QString>
 #include <QVariant>
 #include <QtDebug>
+#include <functional>
+#include <ostream>
+#include <utility>
 
 #include "util/assert.h"
-
+#include "util/compatibility/qhash.h"
 
 // Base class for ID values of objects that are stored in the database.
 //
@@ -102,9 +100,9 @@ class DbId {
         return debug << dbId.m_value;
     }
 
-    friend uint qHash(
+    friend qhash_seed_t qHash(
             const DbId& dbId,
-            uint seed = 0) {
+            qhash_seed_t seed = 0) {
         return qHash(dbId.m_value, seed);
     }