diff --git a/wikitools/yaml_rules.py b/wikitools/yaml_rules.py
index 6798a44..b4e4a3c 100644
--- a/wikitools/yaml_rules.py
+++ b/wikitools/yaml_rules.py
@@ -23,6 +23,7 @@
     "date",
     "layout",
     "title",
+    "series",
     "tumblr_url",
 })
 
diff --git a/wikitools_cli/VERSION.py b/wikitools_cli/VERSION.py
index 3f755ed..707faad 100644
--- a/wikitools_cli/VERSION.py
+++ b/wikitools_cli/VERSION.py
@@ -1 +1 @@
-VERSION = "2.2.1"
+VERSION = "2.3.0"