diff --git a/src/Makevars b/src/Makevars
index 1b62a02227..b2b6cf3954 100644
--- a/src/Makevars
+++ b/src/Makevars
@@ -1,4 +1,4 @@
-CXX_STD = CXX11
+CXX_STD = CXX17
 .PHONY: all libs
 
 all: $(SHLIB)