diff --git a/CHANGELOG.md b/CHANGELOG.md
index e1bbdc951..87d9747f8 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -28,6 +28,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Fixed
 
+- Swift SDK: depending on this repository by git URL no longer fails with `no such module 'Relaycast'` — the root `Package.swift` now declares the `relaycast` dependency `AgentRelaySDK` imports.
 - `HarnessDriverClient.spawn()` now polls the broker's startup handshake for the full `startupTimeoutMs` budget (default 45s) instead of a fixed ~10s, so a slow-but-healthy Relaycast handshake that keeps answering `503` while warming up is no longer misreported as a spawn failure.
 - `agent-relay integration subscribe` now resolves provider-native `--resource` values through relayfile before binding, so Slack channel names, GitHub repos, Linear team keys, and Telegram chats bind to matching relayfile VFS globs while explicit `/`-prefixed globs still work.
 - `agent-relay integration subscribe` is now idempotent and supports multiple resources/channels per provider. Each inbound webhook is scoped to its `(provider, resource)` binding (not one-per-provider), so subscribing a second Slack channel — or two sources into the same relay channel — no longer collides on the unique `(workspace, webhook name)` index or clobbers the other binding's webhook. Re-subscribing creates the replacement webhook/subscription before retiring the old one, so a transient failure can't leave you with no working binding; a failed cleanup now warns instead of being silently swallowed. The relay channel id is normalized (`#general` → `general`) consistently across the webhook, subscription filter, relayfile bind, and writeback-secret lookup, and `listBindings` now maps relayfile's `pathGlob` field so unsubscribe/replace match correctly.
diff --git a/Package.swift b/Package.swift
index 60b4f7983..5d77acdc8 100644
--- a/Package.swift
+++ b/Package.swift
@@ -13,9 +13,21 @@ let package = Package(
         .library(name: "AgentRelaySDK", targets: ["AgentRelaySDK"]),
         .library(name: "AgentRelayBrokerSDK", targets: ["AgentRelayBrokerSDK"])
     ],
+    dependencies: [
+        // Must mirror packages/sdk-swift/Package.swift: AgentRelaySDK imports
+        // Relaycast, and consumers that depend on this repo by git URL resolve
+        // THIS manifest, so the dependency has to be declared here too.
+        .package(
+            url: "https://github.com/AgentWorkforce/relaycast.git",
+            from: "5.0.5"
+        )
+    ],
     targets: [
         .target(
             name: "AgentRelaySDK",
+            dependencies: [
+                .product(name: "Relaycast", package: "relaycast")
+            ],
             path: "packages/sdk-swift/Sources/AgentRelaySDK"
         ),
         .target(