more release fixes
diff --git a/setup.cfg b/setup.cfg
index 3ebc363..a824e19 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -70,6 +70,7 @@
     mako-render = mako.cmd:cmdline
 
 [egg_info]
+tag_build = dev
 
 [tool:pytest]
 addopts= --tb native -v -r fxX -W error