diff --git a/src/types.d.ts b/src/types.d.ts
new file mode 100644
index 0000000..e473e0b
--- /dev/null
+++ b/src/types.d.ts
@@ -0,0 +1,9 @@
+import type {NetContext} from "@welshman/net"
+import type {AppContext} from "@welshman/app"
+
+declare module "@welshman/lib" {
+  interface Context {
+    net: NetContext
+    app: AppContext
+  }
+}