diff --git a/Changes b/Changes
index 27300af9f..478179235 100644
--- a/Changes
+++ b/Changes
@@ -2,6 +2,9 @@ Revision history for Verilator
 
 The contributors that suggested a given feature are shown in []. Thanks!
 
+* Verilator 4.015 devel
+
+
 * Verilator 4.014 2019-05-08
 
 ***   Add --trace-fst-thread.
diff --git a/configure.ac b/configure.ac
index e8050a61f..c0ec75156 100644
--- a/configure.ac
+++ b/configure.ac
@@ -6,7 +6,7 @@
 
 #AC_INIT([Verilator],[#.### YYYY-MM-DD])
 #AC_INIT([Verilator],[#.### devel])
-AC_INIT([Verilator],[4.014 2019-05-08],
+AC_INIT([Verilator],[4.015 devel],
         [https://www.veripool.org/verilator],
         [verilator],[https://www.veripool.org/verilator])
 # When releasing, also update header of Changes file