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-rw-r--r--src/gui/gui.pro.in2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/gui/gui.pro.in b/src/gui/gui.pro.in
index ca28e582..16c42819 100644
--- a/src/gui/gui.pro.in
+++ b/src/gui/gui.pro.in
@@ -60,5 +60,5 @@ LIBS += $$OA_LIB
## C++ compiler
QMAKE_CXX = @CXX@
-QMAKE_CXXFLAGS += -std=c++11 @oa_extra_cxxflags@
+QMAKE_CXXFLAGS += -std=c++20 @oa_extra_cxxflags@
QMAKE_LINK = @CXX@