diff --git a/Source/QtDialog/CMakeLists.txt b/Source/QtDialog/CMakeLists.txt
index e6e41ec4e9..e4b53fd2e7 100644
--- a/Source/QtDialog/CMakeLists.txt
+++ b/Source/QtDialog/CMakeLists.txt
@@ -48,6 +48,11 @@ if(WIN32)
   endif()
 endif()
 
+if(MSVC)
+  # QTBUG-118993: Qt uses deprecated stdext::checked_array_iterator
+  add_compile_definitions(_SILENCE_STDEXT_ARR_ITERS_DEPRECATION_WARNING)
+endif()
+
 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${Qt${INSTALLED_QT_VERSION}Widgets_EXECUTABLE_COMPILE_FLAGS}")
 
 if(CMake_QT_STATIC_QXcbIntegrationPlugin_LIBRARIES)
diff --git a/Tests/CMakeGUI/CMakeLists.txt b/Tests/CMakeGUI/CMakeLists.txt
index 4e8609b854..c9f44e960c 100644
--- a/Tests/CMakeGUI/CMakeLists.txt
+++ b/Tests/CMakeGUI/CMakeLists.txt
@@ -2,6 +2,11 @@ include(CMakeParseArguments)
 
 find_package(Qt5Test REQUIRED)
 
+if(MSVC)
+  # QTBUG-118993: Qt uses deprecated stdext::checked_array_iterator
+  add_compile_definitions(_SILENCE_STDEXT_ARR_ITERS_DEPRECATION_WARNING)
+endif()
+
 include_directories(
   ${CMake_SOURCE_DIR}/Source
   ${CMake_SOURCE_DIR}/Source/QtDialog