diff --git a/product.version b/product.version
index f8e233b..a5543c6 100644
--- a/product.version
+++ b/product.version
@@ -1 +1 @@
-1.9.0
+1.9.1-dev
diff --git a/support/buildbot/build_type b/support/buildbot/build_type
index 17640be..38f8e88 100644
--- a/support/buildbot/build_type
+++ b/support/buildbot/build_type
@@ -1 +1 @@
-rel
+dev