diff --git a/README.md b/README.md
index 278dd16..970dfff 100644
--- a/README.md
+++ b/README.md
@@ -40,6 +40,14 @@ Follow the guide for adding a new locale
 1. Create a new folder in `content/card-images/{product}` for the locale (probably `en-US`)
    1. Fill this folder with the images for the cards for the game.
 
+### Adding New Filters
+
+When adding new filters in a meta data file that previously did not exist, you must also:
+
+1. Navigate to each locale file (in the `i18n` folder)
+1. Go to `Pages.AdvancedSearch`
+1. Add a similar entry as seen there for your new filter.
+
 ## Publishing New Content
 
 This is done automatically when a PR is merged to `master`, and isn't intended to be done manually.
diff --git a/content/i18n/en-US.yml b/content/i18n/en-US.yml
index ff39b8e..7a8fff8 100644
--- a/content/i18n/en-US.yml
+++ b/content/i18n/en-US.yml
@@ -69,6 +69,15 @@ Pages:
     CardCapacityLabel: Card Capacity
     CardCapacityPlaceholder: Card Capacity
 
+    KeysLabel: Keys
+    KeysPlaceholder: Keys
+
+    ActLabel: Act
+    ActPlaceholder: Act
+
+    ComplexityLabel: Complexity
+    ComplexityPlaceholder: Complexity
+
     NumberText: If left unspecified, will not be included in the search query
 
     Operators: