Master is now 1.1.0-dev.
diff --git a/build.yaml b/build.yaml
index c5d92c1..071d4a8 100644
--- a/build.yaml
+++ b/build.yaml
@@ -7,7 +7,7 @@
   '#3': Use "-preN" suffixes to identify pre-release versions
   '#4': Per-language overrides are possible with (eg) ruby_version tag here
   '#5': See the expand_version.py for all the quirks here
-  version: 1.0.0-pre1
+  version: 1.1.0-dev
 filegroups:
 - name: census
   public_headers: