diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index d393728f4..892daefe7 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -218,7 +218,7 @@ jobs:
           TEMPORAL_CLOUD_MTLS_TEST_CLIENT_KEY: ${{ secrets.TEMPORAL_CLIENT_KEY }}
 
           # For Temporal Cloud + API key tests
-          TEMPORAL_CLOUD_API_KEY_TEST_TARGET_HOST: us-west-2.aws.api.temporal.io:7233
+          TEMPORAL_CLOUD_API_KEY_TEST_TARGET_HOST: us-east-1.aws.api.temporal.io:7233
           TEMPORAL_CLOUD_API_KEY_TEST_NAMESPACE: ${{ vars.TEMPORAL_CLIENT_NAMESPACE }}
           TEMPORAL_CLOUD_API_KEY_TEST_API_KEY: ${{ secrets.TEMPORAL_CLIENT_CLOUD_API_KEY }}
 
diff --git a/.gitmodules b/.gitmodules
index b8abbc4e2..81168c312 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,3 +1,4 @@
 [submodule "sdk-core"]
 	path = packages/core-bridge/sdk-core
-    url = https://github.com/temporalio/sdk-core.git
+	url = https://github.com/temporalio/sdk-rust.git
+	branch = main
diff --git a/packages/proto/protos/index.d.ts b/packages/proto/protos/index.d.ts
index 8405bc0e4..9db53aa89 100644
--- a/packages/proto/protos/index.d.ts
+++ b/packages/proto/protos/index.d.ts
@@ -5,14 +5,14 @@
  *
  * ### Core SDK API
  *
- * [Core SDK](https://github.com/temporalio/sdk-core) interfaces can be accessed in the `coresdk` namespace.
+ * [Core SDK](https://github.com/temporalio/sdk-rust) interfaces can be accessed in the `coresdk` namespace.
  *
  * ```ts
  * import { coresdk } from '@temporalio/proto';
  * const activityTask: coresdk.activity_task.IActivityTask = { ... };
  * ```
  *
- * The source protos are in the [sdk-core repo](https://github.com/temporalio/sdk-core/tree/ts-release/protos/local/temporal/sdk/core), for example [`ActivityTask` in `activity_task.proto`](https://github.com/temporalio/sdk-core/blob/85454935e39f789aaaa81f8a05773f8e2cdbcde2/protos/local/temporal/sdk/core/activity_task/activity_task.proto#L12).
+ * The source protos are in the [sdk-rust repo](https://github.com/temporalio/sdk-rust/tree/ts-release/protos/local/temporal/sdk/core), for example [`ActivityTask` in `activity_task.proto`](https://github.com/temporalio/sdk-rust/blob/85454935e39f789aaaa81f8a05773f8e2cdbcde2/protos/local/temporal/sdk/core/activity_task/activity_task.proto#L12).
  *
  * ### Temporal Service API
  *
@@ -23,7 +23,7 @@
  * const retryPolicy: temporal.api.common.v1.IRetryPolicy = { ... };
  * ```
  *
- * The source protos are in [sdk-core/protos/api_upstream/temporal/api/](https://github.com/temporalio/sdk-core/tree/ts-release/protos/api_upstream/temporal/api), for example [`RetryPolicy` in `temporal/api/common/v1/message.proto`](https://github.com/temporalio/sdk-core/blob/85454935e39f789aaaa81f8a05773f8e2cdbcde2/protos/api_upstream/temporal/api/common/v1/message.proto#L96).
+ * The source protos are in [sdk-rust/protos/api_upstream/temporal/api/](https://github.com/temporalio/sdk-rust/tree/ts-release/protos/api_upstream/temporal/api), for example [`RetryPolicy` in `temporal/api/common/v1/message.proto`](https://github.com/temporalio/sdk-rust/blob/85454935e39f789aaaa81f8a05773f8e2cdbcde2/protos/api_upstream/temporal/api/common/v1/message.proto#L96).
  *
  * The gRPC service methods are documented in the proto comments and in the corresponding [`Temporal CLI` docs](https://docs.temporal.io/cli/).
  * @module
diff --git a/packages/test/src/run-activation-perf-tests.ts b/packages/test/src/run-activation-perf-tests.ts
index 3478391c1..139b25dab 100644
--- a/packages/test/src/run-activation-perf-tests.ts
+++ b/packages/test/src/run-activation-perf-tests.ts
@@ -104,7 +104,7 @@ if (!wf.inWorkflowContext()) {
     async function activate(workflow: VMWorkflow, activation: coresdk.workflow_activation.IWorkflowActivation) {
       // Core guarantees the following jobs ordering:
       //   initWf -> patches -> update random seed -> signals+update -> others -> Resolve LA
-      // reference: github.com/temporalio/sdk-core/blob/a8150d5c7c3fc1bfd5a941fd315abff1556cd9dc/core/src/worker/workflow/mod.rs#L1363-L1378
+      // reference: github.com/temporalio/sdk-rust/blob/a8150d5c7c3fc1bfd5a941fd315abff1556cd9dc/core/src/worker/workflow/mod.rs#L1363-L1378
       // Tests are likely to fail if we artifically make an activation that does not follow that order
       const jobs: coresdk.workflow_activation.IWorkflowActivationJob[] = activation.jobs ?? [];
       function getPriority(job: coresdk.workflow_activation.IWorkflowActivationJob) {
diff --git a/packages/test/src/test-workflows.ts b/packages/test/src/test-workflows.ts
index f43ef8cc1..e08b45bf9 100644
--- a/packages/test/src/test-workflows.ts
+++ b/packages/test/src/test-workflows.ts
@@ -142,7 +142,7 @@ async function activate(t: ExecutionContext<Context>, activation: coresdk.workfl
 
   // Core guarantees the following jobs ordering:
   //   initWf -> patches -> update random seed -> signals+update -> others -> Resolve LA
-  // reference: github.com/temporalio/sdk-core/blob/a8150d5c7c3fc1bfd5a941fd315abff1556cd9dc/core/src/worker/workflow/mod.rs#L1363-L1378
+  // reference: github.com/temporalio/sdk-rust/blob/a8150d5c7c3fc1bfd5a941fd315abff1556cd9dc/core/src/worker/workflow/mod.rs#L1363-L1378
   // Tests are likely to fail if we artifically make an activation that does not follow that order
   const jobs: coresdk.workflow_activation.IWorkflowActivationJob[] = activation.jobs ?? [];
   function getPriority(job: coresdk.workflow_activation.IWorkflowActivationJob) {
diff --git a/packages/test/src/workflows/core-issue-589.ts b/packages/test/src/workflows/core-issue-589.ts
index adb14a08b..0e6dfe563 100644
--- a/packages/test/src/workflows/core-issue-589.ts
+++ b/packages/test/src/workflows/core-issue-589.ts
@@ -4,7 +4,7 @@ import { unblockSignal } from './definitions';
 
 const { customLogger } = wf.proxySinks<CustomLoggerSinks>();
 
-// Demo for https://github.com/temporalio/sdk-core/issues/589
+// Demo for https://github.com/temporalio/sdk-rust/issues/589
 export async function coreIssue589(): Promise<void> {
   wf.setHandler(wf.defineQuery('q'), () => {
     return 'not important';