diff --git a/ROADMAP.md b/ROADMAP.md
index 13c9619..bde550f 100644
--- a/ROADMAP.md
+++ b/ROADMAP.md
@@ -27,7 +27,7 @@ VectorDNS is a web-based DNS toolkit. Anyone can look up DNS records, WHOIS data
 
 Everything needed before any features can work.
 
-- [ ] **TypeScript types** — Define shared types for DNS records, WHOIS data, availability results, and database models (`lib/types/`)
+- [x] **TypeScript types** — Define shared types for DNS records, WHOIS data, availability results, and database models (`lib/types/`)
 - [ ] **Supabase schema** — Create migration files for all tables: `profiles`, `saved_domains`, `dns_history`, `availability_history`, `notifications`. Enable Row Level Security on every table.
 - [ ] **Supabase client setup** — Server client, browser client, and middleware for session refresh (`lib/supabase/`). Use `@supabase/ssr` only (auth-helpers is deprecated).
 - [ ] **Project config** — `.env.local.example` with all required env vars, `vercel.json` with cron schedule, typed env accessor (`lib/env.ts`)
diff --git a/components/roadmap-flowchart.tsx b/components/roadmap-flowchart.tsx
index 0fb7915..878f9a7 100644
--- a/components/roadmap-flowchart.tsx
+++ b/components/roadmap-flowchart.tsx
@@ -101,7 +101,7 @@ const nodes: Node<PhaseNodeData>[] = [
       icon: Database,
       color: "#6366f1",
       items: [
-        { text: "TypeScript types", completed: false },
+        { text: "TypeScript types", completed: true },
         { text: "Supabase schema & migrations", completed: false },
         { text: "Supabase client setup (@supabase/ssr)", completed: false },
         { text: "Project config & env setup", completed: false },