diff --git a/netlify.toml b/netlify.toml
index 01a45edd..2e51a6a9 100644
--- a/netlify.toml
+++ b/netlify.toml
@@ -12,6 +12,11 @@
   [headers.values]
     Cache-Control = "public, max-age: 900, s-maxage=604800, must-revalidate"
 
+[[headers]]
+  for = "/domains.json"
+  [headers.values]
+    Cache-Control = "public, max-age: 900, s-maxage=604800, must-revalidate"
+
 [[redirects]]
   from = "/"
   to = "https://github.com/home-assistant/brands"
diff --git a/scripts/build.sh b/scripts/build.sh
index 717c8121..d6c93015 100755
--- a/scripts/build.sh
+++ b/scripts/build.sh
@@ -37,3 +37,6 @@ find ./build -type f -name "logo.png" | while read logo; do
     echo "Using ${logo} as hDPI logo"
   fi
 done
+
+# Create domains.json
+find ./build -maxdepth 1 -type d -exec basename {} \; | sort | jq -sR 'split("\n")[1:]' | jq 'map(select(length > 0))' > ./build/domains.json