diff --git a/configure.ac b/configure.ac
index d7f485ef..566b5239 100644
--- a/configure.ac
+++ b/configure.ac
@@ -7,7 +7,7 @@ AC_DEFUN([AC_PROG_CC], [m4_errprint(__file__:__line__[: Something is trying to u
 dnl Needed for AC_PATH_PROGS_FEATURE_CHECK which was added in 2.62
 AC_PREREQ([2.62])
 dnl Keep the version number in sync with version.h!
-AC_INIT([znc], [1.6.3])
+AC_INIT([znc], [1.6.x])
 AC_CONFIG_MACRO_DIR([m4])
 AC_CONFIG_SRCDIR([src/znc.cpp])
 AC_LANG([C++])
diff --git a/include/znc/version.h b/include/znc/version.h
index 6f46d9b1..14d7bf16 100644
--- a/include/znc/version.h
+++ b/include/znc/version.h
@@ -4,9 +4,9 @@
 // The following defines are for #if comparison (preprocessor only likes ints)
 #define VERSION_MAJOR  1
 #define VERSION_MINOR  6
-#define VERSION_PATCH  3
+#define VERSION_PATCH  -1
 // This one is for display purpose
-#define VERSION_STR    "1.6.3"
+#define VERSION_STR    "1.6.x"
 // This one is for ZNCModInfo
 #define VERSION        (VERSION_MAJOR + VERSION_MINOR / 10.0)