diff --git a/Changes b/Changes
index 1547bfedb..70834a094 100644
--- a/Changes
+++ b/Changes
@@ -3,6 +3,9 @@ Revision history for Verilator
 The contributors that suggested a given feature are shown in []. Thanks!
 
 
+* Verilator 4.109 devel
+
+
 * Verilator 4.108 2021-01-10
 
 **    Many VPI changes for IEEE compatibility, which may alter behavior from previous releases.
diff --git a/configure.ac b/configure.ac
index f3c39b4bd..0ef39b109 100644
--- a/configure.ac
+++ b/configure.ac
@@ -7,7 +7,7 @@
 
 #AC_INIT([Verilator],[#.### YYYY-MM-DD])
 #AC_INIT([Verilator],[#.### devel])
-AC_INIT([Verilator],[4.108 2021-01-10],
+AC_INIT([Verilator],[4.109 devel],
         [https://verilator.org],
         [verilator],[https://verilator.org])
 # When releasing, also update header of Changes file