diff --git a/README.md b/README.md
index 9ec09be..5dad0f3 100644
--- a/README.md
+++ b/README.md
@@ -16,12 +16,16 @@
 go install -v git.warky.dev/wdevs/relspecgo/cmd/relspec@latest
 ```
 
+Windows: download `relspec-setup-windows-amd64.exe` from the
+[latest release](https://git.warky.dev/wdevs/relspecgo/releases/latest)
+(installs to Program Files and adds `relspec` to `PATH`). See [windows/README.md](windows/README.md).
+
 ## Supported Formats
 
 | Direction | Formats |
 |-----------|---------|
-| **Readers** | `bun` `dbml` `dctx` `drawdb` `drizzle` `gorm` `graphql` `json` `mssql` `pgsql` `prisma` `sqldir` `sqlite` `typeorm` `yaml` |
-| **Writers** | `bun` `dbml` `dctx` `drawdb` `drizzle` `gorm` `graphql` `json` `mssql` `pgsql` `prisma` `sqlexec` `sqlite` `template` `typeorm` `yaml` |
+| **Readers** | `bun` `dbml` `dctx` `drawdb` `drizzle` `gorm` `graphql` `json` `mssql` `mysql` `pgsql` `prisma` `sqldir` `sqlite` `typeorm` `yaml` |
+| **Writers** | `bun` `dbml` `dctx` `drawdb` `drizzle` `gorm` `graphql` `json` `mssql` `mysql` `pgsql` `prisma` `sqlexec` `sqlite` `template` `typeorm` `yaml` |
 
 See [docs/FORMAT_EXAMPLES.md](docs/FORMAT_EXAMPLES.md) for usage examples covering every format.
 
@@ -194,6 +198,16 @@ relspec edit --from pgsql --from-conn "postgres://user:pass@localhost/mydb" \
 <img src="./assets/image/screenshots/edit_column.jpg">
 </p>
 
+### `update` — Check for a newer release
+
+```bash
+relspec update            # check, prompt, then download + run installer (Windows)
+relspec update --check    # report only
+relspec update --yes      # skip the prompt
+```
+
+Non-Windows platforms print the release URL. `dev` and commit-hash builds are never reported as outdated.
+
 ## Development
 
 **Prerequisites:** Go 1.24.0+
@@ -204,6 +218,7 @@ make test      # race detection + coverage
 make lint      # requires golangci-lint
 make coverage  # → coverage.html
 make install   # → $GOPATH/bin
+make installer-windows  # → build/relspec-setup-windows-amd64.exe (needs makensis)
 ```
 
 ## Project Structure
@@ -218,6 +233,8 @@ pkg/merge/            Schema merging
 pkg/models/           Internal data models
 pkg/transform/        Transformation logic
 pkg/pgsql/            PostgreSQL utilities
+pkg/updatecheck/      Latest-release lookup and version comparison
+windows/              NSIS installer script
 pkg/sqltypes/         Nullable SQL types for generated/hand-written models (see below)
 ```