diff --git a/configure.ac b/configure.ac
index 183ec9c..5dfec6b 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,6 +1,12 @@
 # SPDX-License-Identifier: LGPL-2.1-only
 
-AC_INIT([librtpi], [0.0.1], [https://gitlab.com/linux-rt/librtpi/-/issues])
+AC_INIT([librtpi], [1.0.0], [https://gitlab.com/linux-rt/librtpi/-/issues])
+
+MAJOR=1
+MINOR=0
+REVISION=0
+AC_SUBST([LIBRTPI_VERSION], [$MAJOR:$MINOR:$REVISION], [library version])
+
 AM_INIT_AUTOMAKE([-Wall -Werror foreign])
 
 AC_ARG_ENABLE([cancellation],
diff --git a/src/Makefile.am b/src/Makefile.am
index b1d7104..b2a6af7 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -3,6 +3,7 @@
 
 lib_LTLIBRARIES = librtpi.la
 librtpi_la_SOURCES = pi_futex.h pi_mutex.c pi_cond.c
+librtpi_la_LDFLAGS  = -version-info @LIBRTPI_VERSION@
 nobase_include_HEADERS = \
 	rtpi.h \
 	rtpi_internal.h \