Bump master version numbers
diff --git a/build.yaml b/build.yaml
index c35ce32..11c2fd8 100644
--- a/build.yaml
+++ b/build.yaml
@@ -12,9 +12,9 @@
   '#08': Use "-preN" suffixes to identify pre-release versions
   '#09': Per-language overrides are possible with (eg) ruby_version tag here
   '#10': See the expand_version.py for all the quirks here
-  core_version: 2.0.0-dev
-  g_stands_for: good
-  version: 1.1.0-dev
+  core_version: 3.0.0-dev
+  g_stands_for: green
+  version: 1.2.0-dev
 filegroups:
 - name: census
   public_headers: