diff --git a/Make_global.am b/Make_global.am
index 4a8f61a..e9f9afd 100644
--- a/Make_global.am
+++ b/Make_global.am
@@ -69,7 +69,7 @@
 # interface. 
 
 #            curr:rev:age
-LIBVERSION = 3:0:1
+LIBVERSION = 3:1:0
 
 AM_CPPFLAGS = $(kinclude_CFLAGS) $(all_includes) -I$(top_srcdir)/include \
 	-I/usr/local/include
diff --git a/lib/Makefile.am b/lib/Makefile.am
index 392b5f9..fd853dd 100644
--- a/lib/Makefile.am
+++ b/lib/Makefile.am
@@ -19,7 +19,7 @@ lib_LTLIBRARIES = libipset.la
 
 include $(top_srcdir)/lib/Make_extra.am
 
-libipset_la_LDFLAGS = -Wl,--version-script=$(top_srcdir)/lib/libipset.map -version-number $(LIBVERSION)
+libipset_la_LDFLAGS = -Wl,--version-script=$(top_srcdir)/lib/libipset.map -version-info $(LIBVERSION)
 libipset_la_LIBADD  = ${libmnl_LIBS} $(IPSET_SETTYPE_STATIC_OBJECTS)
 libipset_la_SOURCES = \
 	data.c \