diff --git a/CMakeLists.txt b/CMakeLists.txt
index 2aefb1a58dd..ef82879259e 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -25,7 +25,7 @@ mark_as_advanced(IDE_REVISION IDE_REVISION_STR IDE_REVISION_URL)
 project(QtCreator VERSION ${IDE_VERSION})
 
 # Force C++ standard, do not fall back, do not use compiler extensions
-set(CMAKE_CXX_STANDARD 17)
+set(CMAKE_CXX_STANDARD 20)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 set(CMAKE_CXX_EXTENSIONS OFF)
 
diff --git a/qbs/imports/QtcProduct.qbs b/qbs/imports/QtcProduct.qbs
index adf7314d0b2..428a23791df 100644
--- a/qbs/imports/QtcProduct.qbs
+++ b/qbs/imports/QtcProduct.qbs
@@ -47,7 +47,7 @@ Product {
         }
         return flags;
     }
-    cpp.cxxLanguageVersion: "c++17"
+    cpp.cxxLanguageVersion: "c++20"
     cpp.defines: qtc.generalDefines
     Properties {
         condition: sanitizable && qbs.toolchain.contains("gcc")
diff --git a/share/qtcreator/cplusplus/examples/CMakeLists.txt b/share/qtcreator/cplusplus/examples/CMakeLists.txt
index 004deeded3e..7d14eba5b98 100644
--- a/share/qtcreator/cplusplus/examples/CMakeLists.txt
+++ b/share/qtcreator/cplusplus/examples/CMakeLists.txt
@@ -8,7 +8,7 @@ set(CMAKE_AUTOUIC ON)
 set(CMAKE_AUTOMOC ON)
 set(CMAKE_AUTORCC ON)
 
-set(CMAKE_CXX_STANDARD 17)
+set(CMAKE_CXX_STANDARD 20)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 
 find_package(QT NAMES Qt6 Qt5 COMPONENTS Core Gui Widgets REQUIRED)
diff --git a/src/libs/qtcreatorcdbext/CMakeLists.txt b/src/libs/qtcreatorcdbext/CMakeLists.txt
index 97307164f65..8a737e3fadb 100644
--- a/src/libs/qtcreatorcdbext/CMakeLists.txt
+++ b/src/libs/qtcreatorcdbext/CMakeLists.txt
@@ -4,7 +4,7 @@ list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/../../../cmake")
 
 project(qtcreatorcdbext)
 
-set(CMAKE_CXX_STANDARD 17)
+set(CMAKE_CXX_STANDARD 20)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 set(CMAKE_CXX_EXTENSIONS OFF)
 
diff --git a/src/tools/qml2puppet/CMakeLists.txt b/src/tools/qml2puppet/CMakeLists.txt
index 9244a9454db..c03567e0381 100644
--- a/src/tools/qml2puppet/CMakeLists.txt
+++ b/src/tools/qml2puppet/CMakeLists.txt
@@ -9,7 +9,7 @@ if (NOT QT_CREATOR_API_DEFINED)
   set(CMAKE_AUTOMOC ON)
   set(CMAKE_AUTORCC ON)
   set(CMAKE_AUTOUIC ON)
-  set(CMAKE_CXX_STANDARD 17)
+  set(CMAKE_CXX_STANDARD 20)
   set(CMAKE_CXX_STANDARD_REQUIRED ON)
   set(CMAKE_CXX_EXTENSIONS OFF)
 
diff --git a/src/tools/sdktool/CMakeLists.txt b/src/tools/sdktool/CMakeLists.txt
index 19b8571f562..97c96909b61 100644
--- a/src/tools/sdktool/CMakeLists.txt
+++ b/src/tools/sdktool/CMakeLists.txt
@@ -7,7 +7,7 @@ project(sdktool)
 set(CMAKE_AUTOMOC ON)
 set(CMAKE_AUTORCC ON)
 set(CMAKE_AUTOUIC ON)
-set(CMAKE_CXX_STANDARD 17)
+set(CMAKE_CXX_STANDARD 20)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 set(CMAKE_CXX_EXTENSIONS OFF)
 
diff --git a/src/tools/wininterrupt/CMakeLists.txt b/src/tools/wininterrupt/CMakeLists.txt
index ee40ff769b8..fdd5a33e4d1 100644
--- a/src/tools/wininterrupt/CMakeLists.txt
+++ b/src/tools/wininterrupt/CMakeLists.txt
@@ -4,7 +4,7 @@ list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/../../../cmake")
 
 project(wininterrupt)
 
-set(CMAKE_CXX_STANDARD 17)
+set(CMAKE_CXX_STANDARD 20)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 set(CMAKE_CXX_EXTENSIONS OFF)
 
diff --git a/tests/auto/debugger/CMakeLists.txt b/tests/auto/debugger/CMakeLists.txt
index 2f06a6b2fc7..01761ba5aa2 100644
--- a/tests/auto/debugger/CMakeLists.txt
+++ b/tests/auto/debugger/CMakeLists.txt
@@ -16,7 +16,7 @@ if (NOT QT_CREATOR_API_DEFINED)
   set(CMAKE_AUTORCC ON)
   set(CMAKE_AUTOUIC ON)
 
-  set(CMAKE_CXX_STANDARD 17)
+  set(CMAKE_CXX_STANDARD 20)
   set(CMAKE_CXX_STANDARD_REQUIRED ON)
   set(CMAKE_CXX_EXTENSIONS OFF)
 
diff --git a/tests/manual/debugger/gui/CMakeLists.txt b/tests/manual/debugger/gui/CMakeLists.txt
index 412b0cdc429..1201ebd4f1c 100644
--- a/tests/manual/debugger/gui/CMakeLists.txt
+++ b/tests/manual/debugger/gui/CMakeLists.txt
@@ -5,7 +5,7 @@ project(manual_test_debugger_gui LANGUAGES CXX)
 set(CMAKE_AUTOUIC ON)
 set(CMAKE_AUTOMOC ON)
 
-set(CMAKE_CXX_STANDARD 17)
+set(CMAKE_CXX_STANDARD 20)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 
 find_package(QT NAMES Qt6 Qt5 REQUIRED COMPONENTS Widgets)