diff --git a/.gitignore b/.gitignore
index 496cab0..3b0eda8 100644
--- a/.gitignore
+++ b/.gitignore
@@ -22,5 +22,6 @@
 /local/
 /parts/
 /share/
+/build/
 /src/node.ext.ldap.egg-info
 /pip-selfcheck.json
diff --git a/CHANGES.rst b/CHANGES.rst
index 1505b56..3b16073 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -1,6 +1,12 @@
 History
 =======
 
+1.0rc1 (unreleased)
+...................
+
+- No changes yet.
+
+
 1.0b12 (2020-05-28)
 -------------------
 
diff --git a/setup.py b/setup.py
index b42d76a..97268b1 100644
--- a/setup.py
+++ b/setup.py
@@ -13,7 +13,7 @@ def read_file(name):
         return f.read()
 
 
-version = '1.0b12'
+version = '1.0rc1.dev0'
 shortdesc = 'LDAP/AD convenience with Node-trees based on python-ldap'
 longdesc = '\n\n'.join([read_file(name) for name in [
     'README.rst',