diff --git a/doc/dependencies.md b/doc/dependencies.md
--- a/doc/dependencies.md
+++ b/doc/dependencies.md
@@ -25,7 +25,7 @@
 | protobuf | [2.6.1](https://github.com/google/protobuf/releases) |  | No |  |  |
 | Python (tests) |  | [3.5](https://www.python.org/downloads) |  |  |  |
 | qrencode | [3.4.4](https://fukuchi.org/works/qrencode) |  | No |  |  |
-| Qt | [5.9.7](https://download.qt.io/official_releases/qt/) | 5.5.1 | No |  |  |
+| Qt | [5.9.7](https://download.qt.io/official_releases/qt/) | 5.9.5 | No |  |  |
 | XCB |  |  |  |  | Yes (Linux only) |
 | xkbcommon |  |  |  |  | Yes (Linux only) |
 | ZeroMQ | [4.3.1](https://github.com/zeromq/libzmq/releases) | 4.1.5 | No |  |  |
diff --git a/src/qt/CMakeLists.txt b/src/qt/CMakeLists.txt
--- a/src/qt/CMakeLists.txt
+++ b/src/qt/CMakeLists.txt
@@ -10,7 +10,7 @@
 	list(APPEND QT_REQUIRED_COMPONENTS DBus)
 endif()
 
-find_package(Qt5 5.5.1 COMPONENTS ${QT_REQUIRED_COMPONENTS} REQUIRED HINTS "${QT5_PREFIX}")
+find_package(Qt5 5.9.5 COMPONENTS ${QT_REQUIRED_COMPONENTS} REQUIRED HINTS "${QT5_PREFIX}")
 
 # Localisation
 add_subdirectory(locale)
diff --git a/src/qt/bitcoin.cpp b/src/qt/bitcoin.cpp
--- a/src/qt/bitcoin.cpp
+++ b/src/qt/bitcoin.cpp
@@ -533,9 +533,7 @@
 
     // Generate high-dpi pixmaps
     QApplication::setAttribute(Qt::AA_UseHighDpiPixmaps);
-#if (QT_VERSION >= QT_VERSION_CHECK(5, 6, 0))
     QCoreApplication::setAttribute(Qt::AA_EnableHighDpiScaling);
-#endif
 #ifdef Q_OS_MAC
     QApplication::setAttribute(Qt::AA_DontShowIconsInMenus);
 #endif