release: bump version to 1.28.0
diff --git a/configure.ac b/configure.ac
index 5ce0c21..f3fe7d5 100644
--- a/configure.ac
+++ b/configure.ac
@@ -3,8 +3,8 @@
 
 dnl The QMI version number
 m4_define([qmi_major_version], [1])
-m4_define([qmi_minor_version], [27])
-m4_define([qmi_micro_version], [4])
+m4_define([qmi_minor_version], [28])
+m4_define([qmi_micro_version], [0])
 m4_define([qmi_version],
           [qmi_major_version.qmi_minor_version.qmi_micro_version])