diff --git a/pkgs/development/libraries/qt-5/5.9/default.nix b/pkgs/development/libraries/qt-5/5.9/default.nix
index 879f7f198c92..0582a9f3f825 100644
--- a/pkgs/development/libraries/qt-5/5.9/default.nix
+++ b/pkgs/development/libraries/qt-5/5.9/default.nix
@@ -6,9 +6,9 @@ Before a major version update, make a copy of this directory. (We like to
 keep the old version around for a short time after major updates.) Add a
 top-level attribute to `top-level/all-packages.nix`.
 
-1. Update the URL in `maintainers/scripts/generate-qt.sh`.
+1. Update the URL in `pkgs/development/libraries/qt-5/$VERSION/fetch.sh`.
 2. From the top of the Nixpkgs tree, run
-   `./maintainers/scripts/generate-qt.sh > pkgs/development/libraries/qt-5/$VERSION/srcs.nix`.
+   `./maintainers/scripts/fetch-kde-qt.sh > pkgs/development/libraries/qt-5/$VERSION/srcs.nix`.
 3. Update `qtCompatVersion` below if the minor version number changes.
 4. Check that the new packages build correctly.
 5. Commit the changes and open a pull request.
diff --git a/pkgs/development/libraries/qt-5/5.9/fetch.sh b/pkgs/development/libraries/qt-5/5.9/fetch.sh
index 2ae85bba391d..103fa4e09abc 100644
--- a/pkgs/development/libraries/qt-5/5.9/fetch.sh
+++ b/pkgs/development/libraries/qt-5/5.9/fetch.sh
@@ -1,2 +1,2 @@
-WGET_ARGS=( http://download.qt.io/official_releases/qt/5.9/5.9.1/submodules/ \
+WGET_ARGS=( http://download.qt.io/official_releases/qt/5.9/5.9.3/submodules/ \
             -A '*.tar.xz' )
diff --git a/pkgs/development/libraries/qt-5/5.9/qtbase.patch b/pkgs/development/libraries/qt-5/5.9/qtbase.patch
index 96c9b029312a..69e389a5a6d4 100644
--- a/pkgs/development/libraries/qt-5/5.9/qtbase.patch
+++ b/pkgs/development/libraries/qt-5/5.9/qtbase.patch
@@ -101,7 +101,7 @@ index bb5083c925..da8e2cb386 100644
  # We are generating cmake files. Most developers of Qt are not aware of cmake,
  # so we require automatic tests to be available. The only module which should
 diff --git a/mkspecs/features/data/cmake/Qt5BasicConfig.cmake.in b/mkspecs/features/data/cmake/Qt5BasicConfig.cmake.in
-index 17da8b979e..d648ab4058 100644
+index 55c74aad66..0bbc8718eb 100644
 --- a/mkspecs/features/data/cmake/Qt5BasicConfig.cmake.in
 +++ b/mkspecs/features/data/cmake/Qt5BasicConfig.cmake.in
 @@ -9,30 +9,6 @@ if (CMAKE_VERSION VERSION_LESS 3.0.0)
@@ -261,10 +261,10 @@ index 17da8b979e..d648ab4058 100644
          set_target_properties(Qt5::${Plugin} PROPERTIES
              \"IMPORTED_LOCATION_${Configuration}\" ${imported_location}
 diff --git a/mkspecs/features/mac/default_post.prf b/mkspecs/features/mac/default_post.prf
-index 395ac34001..a0e5c68b7e 100644
+index e645ba5803..a0e5c68b7e 100644
 --- a/mkspecs/features/mac/default_post.prf
 +++ b/mkspecs/features/mac/default_post.prf
-@@ -24,165 +24,3 @@ qt {
+@@ -24,166 +24,3 @@ qt {
          }
      }
  }
@@ -427,17 +427,18 @@ index 395ac34001..a0e5c68b7e 100644
 -}
 -
 -cache(QMAKE_XCODE_DEVELOPER_PATH, stash)
--cache(QMAKE_XCODE_VERSION, stash)
+-!isEmpty(QMAKE_XCODE_VERSION): \
+-    cache(QMAKE_XCODE_VERSION, stash)
 -
 -QMAKE_XCODE_LIBRARY_SUFFIX = $$qtPlatformTargetSuffix()
 diff --git a/mkspecs/features/mac/default_pre.prf b/mkspecs/features/mac/default_pre.prf
-index e21e749ee9..3b01424e67 100644
+index 44636f2288..61ed486a76 100644
 --- a/mkspecs/features/mac/default_pre.prf
 +++ b/mkspecs/features/mac/default_pre.prf
-@@ -1,51 +1,2 @@
+@@ -1,56 +1,3 @@
  CONFIG = asset_catalogs rez $$CONFIG
  load(default_pre)
--
+ 
 -isEmpty(QMAKE_XCODE_DEVELOPER_PATH) {
 -    # Get path of Xcode's Developer directory
 -    QMAKE_XCODE_DEVELOPER_PATH = $$system("/usr/bin/xcode-select --print-path 2>/dev/null")
@@ -447,18 +448,23 @@ index e21e749ee9..3b01424e67 100644
 -    # Make sure Xcode path is valid
 -    !exists($$QMAKE_XCODE_DEVELOPER_PATH): \
 -        error("Xcode is not installed in $${QMAKE_XCODE_DEVELOPER_PATH}. Please use xcode-select to choose Xcode installation path.")
--
--    # Make sure Xcode is set up properly
--    isEmpty($$list($$system("/usr/bin/xcrun -find xcodebuild 2>/dev/null"))): \
--        error("Xcode not set up properly. You may need to confirm the license agreement by running /usr/bin/xcodebuild.")
 -}
 -
--isEmpty(QMAKE_XCODE_VERSION) {
--    # Extract Xcode version using xcodebuild
--    xcode_version = $$system("/usr/bin/xcodebuild -version")
--    QMAKE_XCODE_VERSION = $$member(xcode_version, 1)
--    isEmpty(QMAKE_XCODE_VERSION): error("Could not resolve Xcode version.")
--    unset(xcode_version)
+-isEmpty(QMAKE_XCODEBUILD_PATH): \
+-    QMAKE_XCODEBUILD_PATH = $$system("/usr/bin/xcrun -find xcodebuild 2>/dev/null")
+-
+-!isEmpty(QMAKE_XCODEBUILD_PATH) {
+-    # Make sure Xcode is set up properly
+-    !system("/usr/bin/xcrun xcodebuild -license check 2>/dev/null"): \
+-        error("Xcode not set up properly. You need to confirm the license agreement by running 'sudo xcrun xcodebuild -license accept'.")
+-
+-    isEmpty(QMAKE_XCODE_VERSION) {
+-        # Extract Xcode version using xcodebuild
+-        xcode_version = $$system("/usr/bin/xcrun xcodebuild -version")
+-        QMAKE_XCODE_VERSION = $$member(xcode_version, 1)
+-        isEmpty(QMAKE_XCODE_VERSION): error("Could not resolve Xcode version.")
+-        unset(xcode_version)
+-    }
 -}
 -
 -isEmpty(QMAKE_TARGET_BUNDLE_PREFIX) {
@@ -487,11 +493,11 @@ index e21e749ee9..3b01424e67 100644
 -# at build time, depending on the current Xcode SDK and configuration.
 -QMAKE_XCODE_LIBRARY_SUFFIX_SETTING = QT_LIBRARY_SUFFIX
 diff --git a/mkspecs/features/mac/sdk.prf b/mkspecs/features/mac/sdk.prf
-index 68ab7e4053..e69de29bb2 100644
+index 3f6dc076ca..8b13789179 100644
 --- a/mkspecs/features/mac/sdk.prf
 +++ b/mkspecs/features/mac/sdk.prf
-@@ -1,49 +0,0 @@
--
+@@ -1,58 +1 @@
+ 
 -isEmpty(QMAKE_MAC_SDK): \
 -    error("QMAKE_MAC_SDK must be set when using CONFIG += sdk.")
 -
@@ -500,13 +506,22 @@ index 68ab7e4053..e69de29bb2 100644
 -
 -defineReplace(xcodeSDKInfo) {
 -    info = $$1
+-    equals(info, "Path"): \
+-        info = --show-sdk-path
+-    equals(info, "PlatformPath"): \
+-        info = --show-sdk-platform-path
+-    equals(info, "SDKVersion"): \
+-        info = --show-sdk-version
 -    sdk = $$2
 -    isEmpty(sdk): \
 -        sdk = $$QMAKE_MAC_SDK
 -
 -    isEmpty(QMAKE_MAC_SDK.$${sdk}.$${info}) {
--        QMAKE_MAC_SDK.$${sdk}.$${info} = $$system("/usr/bin/xcodebuild -sdk $$sdk -version $$info 2>/dev/null")
--        isEmpty(QMAKE_MAC_SDK.$${sdk}.$${info}): error("Could not resolve SDK $$info for \'$$sdk\'")
+-        QMAKE_MAC_SDK.$${sdk}.$${info} = $$system("/usr/bin/xcrun --sdk $$sdk $$info 2>/dev/null")
+-        # --show-sdk-platform-path won't work for Command Line Tools; this is fine
+-        # only used by the XCTest backend to testlib
+-        isEmpty(QMAKE_MAC_SDK.$${sdk}.$${info}):if(!isEmpty(QMAKE_XCODEBUILD_PATH)|!equals(info, "--show-sdk-platform-path")): \
+-            error("Could not resolve SDK $$info for \'$$sdk\'")
 -        cache(QMAKE_MAC_SDK.$${sdk}.$${info}, set stash, QMAKE_MAC_SDK.$${sdk}.$${info})
 -    }
 -
@@ -581,10 +596,10 @@ index d49f4c49c1..097dcd7d39 100644
  target.path = $$instbase/$$TARGETPATH
  INSTALLS += target
 diff --git a/mkspecs/features/qt_app.prf b/mkspecs/features/qt_app.prf
-index cb84ae0da8..45e16f4302 100644
+index 883f8ca215..81db8eb2d4 100644
 --- a/mkspecs/features/qt_app.prf
 +++ b/mkspecs/features/qt_app.prf
-@@ -29,7 +29,7 @@ host_build:force_bootstrap {
+@@ -33,7 +33,7 @@ host_build:force_bootstrap {
      target.path = $$[QT_HOST_BINS]
  } else {
      !build_pass:qtConfig(debug_and_release): CONFIG += release
@@ -607,7 +622,7 @@ index 1848f00e90..2af93675c5 100644
 +    MODULE_QMAKE_OUTDIR = $$NIX_OUTPUT_OUT
  }
 diff --git a/mkspecs/features/qt_common.prf b/mkspecs/features/qt_common.prf
-index 1e138730b3..b7ba74dc3f 100644
+index fb96d1b6a0..508ed17d30 100644
 --- a/mkspecs/features/qt_common.prf
 +++ b/mkspecs/features/qt_common.prf
 @@ -32,8 +32,8 @@ contains(TEMPLATE, .*lib) {
@@ -661,20 +676,32 @@ index 72dde61a40..f891a2baed 100644
      INSTALLS += inst_qch_docs
  
 diff --git a/mkspecs/features/qt_example_installs.prf b/mkspecs/features/qt_example_installs.prf
-index 0a008374e5..5e7cd92f6f 100644
+index 668669e4cd..30f7fbac41 100644
 --- a/mkspecs/features/qt_example_installs.prf
 +++ b/mkspecs/features/qt_example_installs.prf
-@@ -73,7 +73,7 @@ probase = $$relative_path($$_PRO_FILE_PWD_, $$dirname(_QMAKE_CONF_)/examples)
-         $$SOURCES $$HEADERS $$FORMS $$RESOURCES $$TRANSLATIONS \
-         $$DBUS_ADAPTORS $$DBUS_INTERFACES
-     addInstallFiles(sources.files, $$sourcefiles)
--    sources.path = $$[QT_INSTALL_EXAMPLES]/$$probase
-+    sources.path = $$NIX_OUTPUT_DEV/share/examples/$$probase
-     INSTALLS += sources
+@@ -77,13 +77,13 @@ for(extra, extras): \
+ # Just for Qt Creator
+ OTHER_FILES += $$sourcefiles
  
-     check_examples {
+-sourcefiles += \
+-    $$_PRO_FILE_ $$RC_FILE $$DEF_FILE \
+-    $$SOURCES $$HEADERS $$FORMS $$RESOURCES $$TRANSLATIONS \
+-    $$DBUS_ADAPTORS $$DBUS_INTERFACES
+-addInstallFiles(sources.files, $$sourcefiles)
+-sources.path = $$[QT_INSTALL_EXAMPLES]/$$probase
+-INSTALLS += sources
++    sourcefiles += \
++        $$_PRO_FILE_ $$RC_FILE $$DEF_FILE \
++        $$SOURCES $$HEADERS $$FORMS $$RESOURCES $$TRANSLATIONS \
++        $$DBUS_ADAPTORS $$DBUS_INTERFACES
++    addInstallFiles(sources.files, $$sourcefiles)
++    sources.path = $$NIX_OUTPUT_DEV/share/examples/$$probase
++    INSTALLS += sources
+ 
+ check_examples {
+     srcfiles = $$sources.files
 diff --git a/mkspecs/features/qt_functions.prf b/mkspecs/features/qt_functions.prf
-index c00fdb73f8..5789cd0c06 100644
+index 1903e509c8..ae7b585989 100644
 --- a/mkspecs/features/qt_functions.prf
 +++ b/mkspecs/features/qt_functions.prf
 @@ -69,7 +69,7 @@ defineTest(qtHaveModule) {
@@ -836,7 +863,7 @@ index 706304cf34..546420f6ad 100644
  set(_qt5_corelib_extra_includes \"$${CMAKE_INSTALL_DATA_DIR}mkspecs/$${CMAKE_MKSPEC}\")
  !!ENDIF
 diff --git a/src/corelib/kernel/qcoreapplication.cpp b/src/corelib/kernel/qcoreapplication.cpp
-index 39e7c71a9c..dced1f2811 100644
+index cba279c184..5ae3fd62e5 100644
 --- a/src/corelib/kernel/qcoreapplication.cpp
 +++ b/src/corelib/kernel/qcoreapplication.cpp
 @@ -2533,6 +2533,15 @@ QStringList QCoreApplication::libraryPaths()
@@ -856,7 +883,7 @@ index 39e7c71a9c..dced1f2811 100644
          if (!libPathEnv.isEmpty()) {
              QStringList paths = QFile::decodeName(libPathEnv).split(QDir::listSeparator(), QString::SkipEmptyParts);
 diff --git a/src/corelib/tools/qtimezoneprivate_tz.cpp b/src/corelib/tools/qtimezoneprivate_tz.cpp
-index 1714c9802f..fd2ebb1336 100644
+index 4fdc2e36ac..d3ec222543 100644
 --- a/src/corelib/tools/qtimezoneprivate_tz.cpp
 +++ b/src/corelib/tools/qtimezoneprivate_tz.cpp
 @@ -70,7 +70,11 @@ typedef QHash<QByteArray, QTzTimeZone> QTzTimeZoneHash;
@@ -872,7 +899,7 @@ index 1714c9802f..fd2ebb1336 100644
      if (!QFile::exists(path))
          path = QStringLiteral("/usr/lib/zoneinfo/zone.tab");
  
-@@ -643,12 +647,16 @@ void QTzTimeZonePrivate::init(const QByteArray &ianaId)
+@@ -645,12 +649,16 @@ void QTzTimeZonePrivate::init(const QByteArray &ianaId)
          if (!tzif.open(QIODevice::ReadOnly))
              return;
      } else {
@@ -967,7 +994,7 @@ index 1da00813ce..0bf877afcb 100644
              return false;
      }
 diff --git a/src/network/kernel/qhostinfo_unix.cpp b/src/network/kernel/qhostinfo_unix.cpp
-index cf08a15f96..2310488298 100644
+index 9a24938284..74962b4ae2 100644
 --- a/src/network/kernel/qhostinfo_unix.cpp
 +++ b/src/network/kernel/qhostinfo_unix.cpp
 @@ -102,7 +102,7 @@ static bool resolveLibraryInternal()
@@ -1024,7 +1051,7 @@ index 341d3bccf2..3368234c26 100644
              scanThread->interfaceName = QString::fromNSString(ifName);
              scanThread->start();
 diff --git a/src/plugins/platforminputcontexts/compose/generator/qtablegenerator.cpp b/src/plugins/platforminputcontexts/compose/generator/qtablegenerator.cpp
-index ca9f7af127..a337ad73bf 100644
+index b5a0a5bbeb..6c20305f4d 100644
 --- a/src/plugins/platforminputcontexts/compose/generator/qtablegenerator.cpp
 +++ b/src/plugins/platforminputcontexts/compose/generator/qtablegenerator.cpp
 @@ -265,12 +265,9 @@ void TableGenerator::initPossibleLocations()
@@ -1042,7 +1069,7 @@ index ca9f7af127..a337ad73bf 100644
  
  QString TableGenerator::findComposeFile()
 diff --git a/src/plugins/platforms/cocoa/qcocoawindow.mm b/src/plugins/platforms/cocoa/qcocoawindow.mm
-index 59b76370ae..b91139ded9 100644
+index 5cd4beb4f0..84919e6d6a 100644
 --- a/src/plugins/platforms/cocoa/qcocoawindow.mm
 +++ b/src/plugins/platforms/cocoa/qcocoawindow.mm
 @@ -320,7 +320,7 @@ static void qt_closePopups()
@@ -1055,7 +1082,7 @@ index 59b76370ae..b91139ded9 100644
  
  #if QT_MACOS_PLATFORM_SDK_EQUAL_OR_ABOVE(__MAC_10_12)
 diff --git a/src/plugins/platforms/xcb/gl_integrations/xcb_glx/qglxintegration.cpp b/src/plugins/platforms/xcb/gl_integrations/xcb_glx/qglxintegration.cpp
-index 7640a711a9..ef9a14d38b 100644
+index e2e573f0e1..1c8289f81e 100644
 --- a/src/plugins/platforms/xcb/gl_integrations/xcb_glx/qglxintegration.cpp
 +++ b/src/plugins/platforms/xcb/gl_integrations/xcb_glx/qglxintegration.cpp
 @@ -580,7 +580,14 @@ QFunctionPointer QGLXContext::getProcAddress(const char *procName)
@@ -1074,11 +1101,11 @@ index 7640a711a9..ef9a14d38b 100644
  #endif
              }
 diff --git a/src/plugins/platforms/xcb/qxcbcursor.cpp b/src/plugins/platforms/xcb/qxcbcursor.cpp
-index d257ab1242..75853af4e4 100644
+index 7c62c2e2b3..fefa40e0f6 100644
 --- a/src/plugins/platforms/xcb/qxcbcursor.cpp
 +++ b/src/plugins/platforms/xcb/qxcbcursor.cpp
 @@ -311,10 +311,10 @@ QXcbCursor::QXcbCursor(QXcbConnection *conn, QXcbScreen *screen)
- #if defined(XCB_USE_XLIB) && QT_CONFIG(library)
+ #if QT_CONFIG(xcb_xlib) && QT_CONFIG(library)
      static bool function_ptrs_not_initialized = true;
      if (function_ptrs_not_initialized) {
 -        QLibrary xcursorLib(QLatin1String("Xcursor"), 1);
diff --git a/pkgs/development/libraries/qt-5/5.9/srcs.nix b/pkgs/development/libraries/qt-5/5.9/srcs.nix
index 247800b75780..df7846ca3866 100644
--- a/pkgs/development/libraries/qt-5/5.9/srcs.nix
+++ b/pkgs/development/libraries/qt-5/5.9/srcs.nix
@@ -3,275 +3,275 @@
 
 {
   qt3d = {
-    version = "5.9.1";
+    version = "5.9.3";
     src = fetchurl {
-      url = "${mirror}/official_releases/qt/5.9/5.9.1/submodules/qt3d-opensource-src-5.9.1.tar.xz";
-      sha256 = "15j9znfnxch1n6fwz9ngi30msdzh0wlpykl53cs8g2fp2awfa7sg";
-      name = "qt3d-opensource-src-5.9.1.tar.xz";
+      url = "${mirror}/official_releases/qt/5.9/5.9.3/submodules/qt3d-opensource-src-5.9.3.tar.xz";
+      sha256 = "0gr7wvd3p8i2frj9nkfxffxapwqx6i4wh171ymvcsg2qy0r534lp";
+      name = "qt3d-opensource-src-5.9.3.tar.xz";
     };
   };
   qtactiveqt = {
-    version = "5.9.1";
+    version = "5.9.3";
     src = fetchurl {
-      url = "${mirror}/official_releases/qt/5.9/5.9.1/submodules/qtactiveqt-opensource-src-5.9.1.tar.xz";
-      sha256 = "07zq60xg7nnlny7qgj6dk1ibg3fzhbdh78gpd0s6x1n822iyislg";
-      name = "qtactiveqt-opensource-src-5.9.1.tar.xz";
+      url = "${mirror}/official_releases/qt/5.9/5.9.3/submodules/qtactiveqt-opensource-src-5.9.3.tar.xz";
+      sha256 = "16aka3y7a6mhs0yfm7vbq8v5gbh2ifmk4v2hl04iacindq9f5v2r";
+      name = "qtactiveqt-opensource-src-5.9.3.tar.xz";
     };
   };
   qtandroidextras = {
-    version = "5.9.1";
+    version = "5.9.3";
     src = fetchurl {
-      url = "${mirror}/official_releases/qt/5.9/5.9.1/submodules/qtandroidextras-opensource-src-5.9.1.tar.xz";
-      sha256 = "0nq879jsa2z1l5q3n0hhiv15mzfm5c6s7zfblcc10sgim90p5mjj";
-      name = "qtandroidextras-opensource-src-5.9.1.tar.xz";
+      url = "${mirror}/official_releases/qt/5.9/5.9.3/submodules/qtandroidextras-opensource-src-5.9.3.tar.xz";
+      sha256 = "0f653qmzvr3rjjgipjbcxvp5wq9fbaz1b4bvj7g868s2d9gpqp9n";
+      name = "qtandroidextras-opensource-src-5.9.3.tar.xz";
     };
   };
   qtbase = {
-    version = "5.9.1";
+    version = "5.9.3";
     src = fetchurl {
-      url = "${mirror}/official_releases/qt/5.9/5.9.1/submodules/qtbase-opensource-src-5.9.1.tar.xz";
-      sha256 = "1ikm896jzyfyjv2qv8n3fd81sxb4y24zkygx36865ygzyvlj36mw";
-      name = "qtbase-opensource-src-5.9.1.tar.xz";
+      url = "${mirror}/official_releases/qt/5.9/5.9.3/submodules/qtbase-opensource-src-5.9.3.tar.xz";
+      sha256 = "10lrkarvs7dpx9rlj7sjcc0pzi42098x8nqnhmydr4bnbq048z4y";
+      name = "qtbase-opensource-src-5.9.3.tar.xz";
     };
   };
   qtcanvas3d = {
-    version = "5.9.1";
+    version = "5.9.3";
     src = fetchurl {
-      url = "${mirror}/official_releases/qt/5.9/5.9.1/submodules/qtcanvas3d-opensource-src-5.9.1.tar.xz";
-      sha256 = "10fy8wqfw2yhha6lyky5g1a72137aj8pji7mk0wjnggh629z12sb";
-      name = "qtcanvas3d-opensource-src-5.9.1.tar.xz";
+      url = "${mirror}/official_releases/qt/5.9/5.9.3/submodules/qtcanvas3d-opensource-src-5.9.3.tar.xz";
+      sha256 = "1g0a606fgal4x17ly0qrj05pb0k8riwh7nj4g3jip05g8iwb2f2y";
+      name = "qtcanvas3d-opensource-src-5.9.3.tar.xz";
     };
   };
   qtcharts = {
-    version = "5.9.1";
+    version = "5.9.3";
     src = fetchurl {
-      url = "${mirror}/official_releases/qt/5.9/5.9.1/submodules/qtcharts-opensource-src-5.9.1.tar.xz";
-      sha256 = "180df5v7i1ki8hc3lgi6jcfdyz7f19pb73dvfkw402wa2gfcna3k";
-      name = "qtcharts-opensource-src-5.9.1.tar.xz";
+      url = "${mirror}/official_releases/qt/5.9/5.9.3/submodules/qtcharts-opensource-src-5.9.3.tar.xz";
+      sha256 = "1sb99ncmh84bz0xzq55chgic7jk61awnfvi7ld4gq5ap3nl865zc";
+      name = "qtcharts-opensource-src-5.9.3.tar.xz";
     };
   };
   qtconnectivity = {
-    version = "5.9.1";
+    version = "5.9.3";
     src = fetchurl {
-      url = "${mirror}/official_releases/qt/5.9/5.9.1/submodules/qtconnectivity-opensource-src-5.9.1.tar.xz";
-      sha256 = "1mbzmqix0388iq20a1ljd1pgdq259rm1xzp9kx8gigqpamqqnqs0";
-      name = "qtconnectivity-opensource-src-5.9.1.tar.xz";
+      url = "${mirror}/official_releases/qt/5.9/5.9.3/submodules/qtconnectivity-opensource-src-5.9.3.tar.xz";
+      sha256 = "0j86rspn4xgwq1ddc1mpq1kq0ib2c0ag6rsn9ly2xs4iimp1x2g2";
+      name = "qtconnectivity-opensource-src-5.9.3.tar.xz";
     };
   };
   qtdatavis3d = {
-    version = "5.9.1";
+    version = "5.9.3";
     src = fetchurl {
-      url = "${mirror}/official_releases/qt/5.9/5.9.1/submodules/qtdatavis3d-opensource-src-5.9.1.tar.xz";
-      sha256 = "14d1q07winh6n1bkc616dapwfnsfkcjyg5zngdqjdj9mza8ang13";
-      name = "qtdatavis3d-opensource-src-5.9.1.tar.xz";
+      url = "${mirror}/official_releases/qt/5.9/5.9.3/submodules/qtdatavis3d-opensource-src-5.9.3.tar.xz";
+      sha256 = "0s636ix44akrjx47gv9qj2ac02q8clnwj3acfr28p6pagm46k7vh";
+      name = "qtdatavis3d-opensource-src-5.9.3.tar.xz";
     };
   };
   qtdeclarative = {
-    version = "5.9.1";
+    version = "5.9.3";
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-      name = "qtwebengine-opensource-src-5.9.1.tar.xz";
+      url = "${mirror}/official_releases/qt/5.9/5.9.3/submodules/qtwebengine-opensource-src-5.9.3.tar.xz";
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   qtwebkit = {
@@ -291,43 +291,43 @@
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+    version = "5.9.3";
     src = fetchurl {
-      url = "${mirror}/official_releases/qt/5.9/5.9.1/submodules/qtwinextras-opensource-src-5.9.1.tar.xz";
-      sha256 = "1x7f944f3g2ml3mm594qv6jlvl5dzzsxq86yinp7av0lhnyrxk0s";
-      name = "qtwinextras-opensource-src-5.9.1.tar.xz";
+      url = "${mirror}/official_releases/qt/5.9/5.9.3/submodules/qtwinextras-opensource-src-5.9.3.tar.xz";
+      sha256 = "1lj4qa51ymhpvk0bdp6xf6b3n1k39kihns5lvp6xq1w2mljn6phl";
+      name = "qtwinextras-opensource-src-5.9.3.tar.xz";
     };
   };
   qtx11extras = {
-    version = "5.9.1";
+    version = "5.9.3";
     src = fetchurl {
-      url = "${mirror}/official_releases/qt/5.9/5.9.1/submodules/qtx11extras-opensource-src-5.9.1.tar.xz";
-      sha256 = "00fn3bps48gjyw0pdqvvl9scknxdpmacby6hvdrdccc3jll0wgd6";
-      name = "qtx11extras-opensource-src-5.9.1.tar.xz";
+      url = "${mirror}/official_releases/qt/5.9/5.9.3/submodules/qtx11extras-opensource-src-5.9.3.tar.xz";
+      sha256 = "1gpjgca4xvyy0r743kh2ys128r14fh6j8bdphnmmi5v2pf6bzq74";
+      name = "qtx11extras-opensource-src-5.9.3.tar.xz";
     };
   };
   qtxmlpatterns = {
-    version = "5.9.1";
+    version = "5.9.3";
     src = fetchurl {
-      url = "${mirror}/official_releases/qt/5.9/5.9.1/submodules/qtxmlpatterns-opensource-src-5.9.1.tar.xz";
-      sha256 = "094wwap2fsl23cys6rxh2ciw0gxbbiqbshnn4qs1n6xdjrj6i15m";
-      name = "qtxmlpatterns-opensource-src-5.9.1.tar.xz";
+      url = "${mirror}/official_releases/qt/5.9/5.9.3/submodules/qtxmlpatterns-opensource-src-5.9.3.tar.xz";
+      sha256 = "1fphhqr3v3vzjp2vbv16bc1vs879wn7aqlabgcpkhqx92ak6d76g";
+      name = "qtxmlpatterns-opensource-src-5.9.3.tar.xz";
     };
   };
 }
diff --git a/pkgs/development/libraries/qt-5/modules/qtbase.nix b/pkgs/development/libraries/qt-5/modules/qtbase.nix
index 36238b5faddf..172b20bc51bb 100644
--- a/pkgs/development/libraries/qt-5/modules/qtbase.nix
+++ b/pkgs/development/libraries/qt-5/modules/qtbase.nix
@@ -3,7 +3,7 @@
   src, patches, version, qtCompatVersion,
 
   coreutils, bison, flex, gdb, gperf, lndir, patchelf, perl, pkgconfig, python2,
-  ruby,
+  ruby, which,
   # darwin support
   darwin, libiconv, libcxx,
 
@@ -84,7 +84,7 @@ stdenv.mkDerivation {
     ++ lib.optional (postgresql != null) postgresql;
 
   nativeBuildInputs =
-    [ bison flex gperf lndir perl pkgconfig python2 ]
+    [ bison flex gperf lndir perl pkgconfig python2 which ]
     ++ lib.optional (!stdenv.isDarwin) patchelf;
 
   propagatedNativeBuildInputs = [ lndir ];