--- rpl/configure.ac	2015/11/09 17:37:05	1.138
+++ rpl/configure.ac	2015/11/16 20:59:55	1.139
@@ -11,7 +11,7 @@ dnl Libraries
 NCURSES=ncurses-6.0
 READLINE=readline-6.3
 UNITS=units-2.12
-GSL=gsl-2.0
+GSL=gsl-2.1
 GPP=gpp-3.0
 GNUPLOT=gnuplot-5.0.1
 FILE=file-5.11