diff --git a/CMakeLists.txt b/CMakeLists.txt
index 7998a0c7ed2..8939f81b87d 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -42,7 +42,11 @@ add_custom_target(check-style
     USES_TERMINAL
 )
 
-set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-unknown-warning-option -Wall -Wextra -Werror -Wmissing-declarations -std=c++2a -fdiagnostics-color=always -ftls-model=initial-exec")
+set(CMAKE_CXX_STANDARD 20)
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+set(CMAKE_CXX_EXTENSIONS OFF)
+
+set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-unknown-warning-option -Wall -Wextra -Werror -Wmissing-declarations -fdiagnostics-color=always -ftls-model=initial-exec")
 if ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU")
     set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fconcepts")
 elseif ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang")
@@ -170,7 +174,7 @@ function(serenity_app target_name)
     serenity_bin("${target_name}")
     set(small_icon "${CMAKE_SOURCE_DIR}/Base/res/icons/16x16/${SERENITY_APP_ICON}.png")
     set(medium_icon "${CMAKE_SOURCE_DIR}/Base/res/icons/32x32/${SERENITY_APP_ICON}.png")
-    
+
     if (EXISTS "${small_icon}")
         embed_resource("${target_name}" serenity_icon_s "${small_icon}")
     endif()
@@ -214,7 +218,7 @@ function(embed_resource target section file)
     get_filename_component(input_file "${file}" ABSOLUTE)
     add_custom_command(
         OUTPUT "${asm_file}"
-        COMMAND "${CMAKE_SOURCE_DIR}/Meta/generate-embedded-resource-assembly.sh" "${asm_file}" "${section}" "${input_file}" 
+        COMMAND "${CMAKE_SOURCE_DIR}/Meta/generate-embedded-resource-assembly.sh" "${asm_file}" "${section}" "${input_file}"
         DEPENDS "${input_file}" "${CMAKE_SOURCE_DIR}/Meta/generate-embedded-resource-assembly.sh"
         COMMENT "Generating ${asm_file}"
     )
@@ -266,7 +270,7 @@ set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -ffile-prefix-map=${CMAKE_SOURCE_DIR}=."
 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -DDEBUG -DSANITIZE_PTRS")
 set(CMAKE_CXX_FLAGS_STATIC "${CMAKE_CXX_FLAGS} -static")
 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -nostartfiles -pie -fpic")
- 
+
 add_link_options(--sysroot ${CMAKE_BINARY_DIR}/Root)
 
 include_directories(Libraries/LibC)