--- rpl/configure.ac	2018/06/15 12:21:23	1.223
+++ rpl/configure.ac	2018/12/20 09:27:35	1.224
@@ -11,7 +11,7 @@ dnl Libraries
 NCURSES=ncurses-6.0
 READLINE=readline-7.0
 UNITS=units-2.16
-GSL=gsl-2.4
+GSL=gsl-2.5
 GPP=gpp-3.0
 GNUPLOT=gnuplot-5.2.3
 FILE=file-5.33