diff --git a/.gitignore b/.gitignore
index 01449c1..58c1143 100644
--- a/.gitignore
+++ b/.gitignore
@@ -200,3 +200,9 @@ venv/
 *.coverage
 hypothesis/
 
+
+# ============================================================
+# Cassiopeia custom theme overrides
+# ============================================================
+/media/css/theme/dark.custom.css
+/media/css/theme/light.custom.css