diff --git a/configure.ac b/configure.ac
index 77d9f1f..75ebe2f 100644
--- a/configure.ac
+++ b/configure.ac
@@ -12,7 +12,7 @@ dnl implied.  In no event shall the authors be liable for any damages arising
 dnl from the use of this software.
 
 AC_PREREQ([2.71])
-AC_INIT([pkgconf],[1.8.0],[https://github.com/pkgconf/pkgconf/issues/new])
+AC_INIT([pkgconf],[1.9.0],[https://github.com/pkgconf/pkgconf/issues/new])
 AC_CONFIG_SRCDIR([cli/main.c])
 AC_CONFIG_MACRO_DIR([m4])
 AX_CHECK_COMPILE_FLAG([-Wall], [CFLAGS="$CFLAGS -Wall"])
diff --git a/libpkgconf/libpkgconf.h b/libpkgconf/libpkgconf.h
index db0d367..15cf88f 100644
--- a/libpkgconf/libpkgconf.h
+++ b/libpkgconf/libpkgconf.h
@@ -79,8 +79,8 @@ typedef struct pkgconf_cross_personality_ pkgconf_cross_personality_t;
 #define PKGCONF_FOREACH_LIST_ENTRY_REVERSE(tail, value) \
 	for ((value) = (tail); (value) != NULL; (value) = (value)->prev)
 
-#define LIBPKGCONF_VERSION	10700
-#define LIBPKGCONF_VERSION_STR	"1.7.0"
+#define LIBPKGCONF_VERSION	10900
+#define LIBPKGCONF_VERSION_STR	"1.9.0"
 
 struct pkgconf_fragment_ {
 	pkgconf_node_t iter;
diff --git a/meson.build b/meson.build
index 7051e40..2696d90 100644
--- a/meson.build
+++ b/meson.build
@@ -1,5 +1,5 @@
 project('pkgconf', 'c',
-  version : '1.8.0',
+  version : '1.9.0',
   license : 'ISC',
   meson_version : '>=0.47',
   default_options : ['c_std=c99'],