diff --git a/pyproject.toml b/pyproject.toml
index ec76456..6744a9a 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -55,9 +55,8 @@ gui = [
     "pywebview>=6.2.1; platform_system == 'Windows'",
     "velopack>=1.2",
     "qtpy>=2.4.1; platform_system == 'Darwin'",
-    "PyQt5>=5.15.11; platform_system == 'Darwin'",
-    # pywebview[qt] no longer pulls this in; the macOS Qt backend needs it
-    "PyQtWebEngine>=5.15.7; platform_system == 'Darwin'",
+    # macOS Qt backend (bundled modern Chromium); PyQt6-WebEngine pulls PyQt6
+    "PyQt6-WebEngine>=6.7.0; platform_system == 'Darwin'",
     "pythonnet>=3.1.0rc0; platform_system == 'Windows' and python_version >= '3.14'",
     "pyinstaller>=6.0",
 ]
diff --git a/scripts/MediaHive.spec b/scripts/MediaHive.spec
index 3088eeb..01bc923 100644
--- a/scripts/MediaHive.spec
+++ b/scripts/MediaHive.spec
@@ -88,11 +88,12 @@ if sys.platform == "darwin":
             # pywebview Qt backend selected dynamically via webview.start(gui="qt")
             "webview.platforms.qt",
             "qtpy",
-            "PyQt5",
-            "PyQt5.QtCore",
-            "PyQt5.QtGui",
-            "PyQt5.QtWidgets",
-            "PyQt5.QtWebEngineWidgets",
+            "PyQt6",
+            "PyQt6.QtCore",
+            "PyQt6.QtGui",
+            "PyQt6.QtWidgets",
+            "PyQt6.QtWebEngineCore",
+            "PyQt6.QtWebEngineWidgets",
         ]
     )