diff --git a/configure.ac b/configure.ac
index 40b89ce206f3fc8f302574cb1b3eb00d6d6b0f22..66691ddb02c73260a7dfa010119ce5b5e4f1fbc9 100644
--- a/configure.ac
+++ b/configure.ac
@@ -46,7 +46,7 @@ dnl Basic autotools settings.
 dnl ######################################################################
 AC_PREREQ([2.64])
 dnl Update the corresponding entry in doc/Doxyfile when changing this
-AC_INIT([yaxt],[0.8.1],[hanke@dkrz.de],,
+AC_INIT([yaxt],[0.9.0],[hanke@dkrz.de],,
   [http://www.dkrz.de/redmine/projects/yaxt])
 AC_CONFIG_SRCDIR([src/xt_idxlist.c])
 AC_CONFIG_AUX_DIR([config])
diff --git a/src/Makefile.am b/src/Makefile.am
index 6d0630b9229f3932200d21a2f41e39073e5bc599..8c32e6ca7fd929c43392a93cd1c6cc1ee02dae5a 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -183,9 +183,9 @@ libyaxt_la_SOURCES =						\
 	yaxt.f90
 
 libyaxt_la_LIBADD = libyaxt_c.la $(MPI_FC_LIB)
-libyaxt_la_LDFLAGS = -version-info 7:0:6
+libyaxt_la_LDFLAGS = -version-info 8:0:7
 libyaxt_c_la_LIBADD = $(MPI_C_LIB)
-libyaxt_c_la_LDFLAGS = -version-info 7:0:6
+libyaxt_c_la_LDFLAGS = -version-info 8:0:7
 
 if OMPI_DT_WORKAROUND
 noinst_LTLIBRARIES = libompi_workaround.la