diff --git a/pkgs/development/libraries/qt-5/5.14/default.nix b/pkgs/development/libraries/qt-5/5.14/default.nix
index 469157a5f727..7bc9b5f19bd6 100644
--- a/pkgs/development/libraries/qt-5/5.14/default.nix
+++ b/pkgs/development/libraries/qt-5/5.14/default.nix
@@ -55,6 +55,10 @@ let
       optionals stdenv.isDarwin [
         ./qtbase.patch.d/0001-qtbase-mkspecs-mac.patch
         ./qtbase.patch.d/0002-qtbase-mac.patch
+
+        # Patch framework detection to support X.framework/X.tbd,
+        # extending the current support for X.framework/X.
+        ./qtbase.patch.d/0012-qtbase-tbd-frameworks.patch
       ]
       ++ [
         ./qtbase.patch.d/0003-qtbase-mkspecs.patch
diff --git a/pkgs/development/libraries/qt-5/5.14/qtbase.patch.d/0012-qtbase-tbd-frameworks.patch b/pkgs/development/libraries/qt-5/5.14/qtbase.patch.d/0012-qtbase-tbd-frameworks.patch
new file mode 100644
index 000000000000..8a5939978a6b
--- /dev/null
+++ b/pkgs/development/libraries/qt-5/5.14/qtbase.patch.d/0012-qtbase-tbd-frameworks.patch
@@ -0,0 +1,15 @@
+diff --git a/src/gui/Qt5GuiConfigExtras.cmake.in b/src/gui/Qt5GuiConfigExtras.cmake.in
+index 84dbbfebd4..615bfed124 100644
+--- a/src/gui/Qt5GuiConfigExtras.cmake.in
++++ b/src/gui/Qt5GuiConfigExtras.cmake.in
+@@ -119,6 +119,10 @@ macro(_qt5gui_find_extra_libs Name Libs LibDir IncDirs)
+             if (NOT EXISTS "${Qt5Gui_${_cmake_lib_name}_LIBRARY}")
+                 set(Qt5Gui_${_cmake_lib_name}_LIBRARY)
+             endif()
++            set(Qt5Gui_${_cmake_lib_name}_LIBRARY "${Qt5Gui_${_cmake_lib_name}_LIBRARY}/${_lib}.tbd")
++            if (NOT EXISTS "${Qt5Gui_${_cmake_lib_name}_LIBRARY}")
++                set(Qt5Gui_${_cmake_lib_name}_LIBRARY)
++            endif()
+ !!ENDIF
+             if (NOT Qt5Gui_${_cmake_lib_name}_LIBRARY)
+                 # The above find_library call doesn\'t work for finding