diff --git a/Changes b/Changes
index e09133c42..bc1d5c5df 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 4.201 devel
+
+
 * Verilator 4.200 2021-03-12
 
 **    Add simulation context (VerilatedContext) to allow multiple fully independent
diff --git a/configure.ac b/configure.ac
index 3d7c5ea55..702679ddb 100644
--- a/configure.ac
+++ b/configure.ac
@@ -7,7 +7,7 @@
 
 #AC_INIT([Verilator],[#.### YYYY-MM-DD])
 #AC_INIT([Verilator],[#.### devel])
-AC_INIT([Verilator],[4.200 2021-03-12],
+AC_INIT([Verilator],[4.201 devel],
         [https://verilator.org],
         [verilator],[https://verilator.org])
 # When releasing, also update header of Changes file