--- calligra-3.2.1/CMakeLists.txt
+++ calligra-3.2.1/CMakeLists.txt
@@ -108,7 +108,7 @@ message(STATUS "Release build: ${RELEASE
 if (CMAKE_VERSION VERSION_LESS "3.1")
     set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")
 else ()
-    set (CMAKE_CXX_STANDARD 11)
+    set (CMAKE_CXX_STANDARD 17)
 endif ()
 
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