diff --git a/makefile b/makefile
index 446cefc..b807346 100644
--- a/makefile
+++ b/makefile
@@ -1,6 +1,6 @@
 NUMCORES = $(shell grep -c "^processor" /proc/cpuinfo)
 NUMCORESWIN = ${NUMBER_OF_PROCESSORS}
-LIBFLAGS = -shared -std=c++11 -O3 -fPIC -Wall
+LIBFLAGS = -shared -std=c++17 -O3 -fPIC -Wall
 EXEFLAGS = -Wall -std=c++11 -O3 -Wl,-rpath,'$$ORIGIN/lib'
 LINKEDLIBS = -lgmp -lgmpxx
 PROBLEM_NUMBERS = 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 67