diff --git a/configure.ac b/configure.ac
index 2083c01d9ded0..847aebb43c110 100644
--- a/configure.ac
+++ b/configure.ac
@@ -2,7 +2,7 @@ AC_PREREQ([2.69])
 define(_CLIENT_VERSION_MAJOR, 18)
 define(_CLIENT_VERSION_MINOR, 0)
 define(_CLIENT_VERSION_BUILD, 0)
-define(_CLIENT_VERSION_RC, 3)
+define(_CLIENT_VERSION_RC, 4)
 define(_CLIENT_VERSION_IS_RELEASE, false)
 define(_COPYRIGHT_YEAR, 2021)
 define(_COPYRIGHT_HOLDERS,[The %s developers])