diff --git a/server/go.mod b/server/go.mod
index 5b4b7143f4..e70b950318 100644
--- a/server/go.mod
+++ b/server/go.mod
@@ -11,7 +11,7 @@ require (
 	github.com/labstack/echo/v4 v4.13.4
 	github.com/stretchr/testify v1.10.0
 	github.com/urfave/cli/v2 v2.3.0
-	go.temporal.io/api v1.60.1
+	go.temporal.io/api v1.60.2
 	golang.org/x/net v0.47.0
 	golang.org/x/oauth2 v0.30.0
 	google.golang.org/grpc v1.66.1
diff --git a/server/go.sum b/server/go.sum
index 2c3a4dc62c..94cf1f3e5d 100644
--- a/server/go.sum
+++ b/server/go.sum
@@ -68,8 +68,8 @@ github.com/valyala/bytebufferpool v1.0.0 h1:GqA5TC/0021Y/b9FG4Oi9Mr3q7XYx6Kllzaw
 github.com/valyala/bytebufferpool v1.0.0/go.mod h1:6bBcMArwyJ5K/AmCkWv1jt77kVWyCJ6HpOuEn7z0Csc=
 github.com/valyala/fasttemplate v1.2.2 h1:lxLXG0uE3Qnshl9QyaK6XJxMXlQZELvChBOCmQD0Loo=
 github.com/valyala/fasttemplate v1.2.2/go.mod h1:KHLXt3tVN2HBp8eijSv/kGJopbvo7S+qRAEEKiv+SiQ=
-go.temporal.io/api v1.60.1 h1:UO3T3LE69LvKd/WU5TjsAJ+/s/wpiMA2i51xkajsbXY=
-go.temporal.io/api v1.60.1/go.mod h1:iaxoP/9OXMJcQkETTECfwYq4cw/bj4nwov8b3ZLVnXM=
+go.temporal.io/api v1.60.2 h1:xqUqdPeOu8/HNWVPu51P6tVoBJ5kRh8nBI62xXi+IWg=
+go.temporal.io/api v1.60.2/go.mod h1:iaxoP/9OXMJcQkETTECfwYq4cw/bj4nwov8b3ZLVnXM=
 golang.org/x/crypto v0.45.0 h1:jMBrvKuj23MTlT0bQEOBcAE0mjg8mK9RXFhRH6nyF3Q=
 golang.org/x/crypto v0.45.0/go.mod h1:XTGrrkGJve7CYK7J8PEww4aY7gM3qMCElcJQ8n8JdX4=
 golang.org/x/net v0.47.0 h1:Mx+4dIFzqraBXUugkia1OOvlD6LemFo1ALMHjrXDOhY=
diff --git a/src/lib/services/workflow-activities-service.ts b/src/lib/services/workflow-activities-service.ts
index 28cf0b35f6..e20b78746a 100644
--- a/src/lib/services/workflow-activities-service.ts
+++ b/src/lib/services/workflow-activities-service.ts
@@ -8,12 +8,6 @@ import type {
   ActivityUpdateOptionsRequest,
   ActivityUpdateOptionsResponse,
 } from '$lib/types';
-import type {
-  CompleteActivityTaskRequest,
-  CompleteActivityTaskResponse,
-  FailActivityTaskRequest,
-  FailActivityTaskResponse,
-} from '$lib/types/events';
 import { stringifyWithBigInt } from '$lib/utilities/parse-with-big-int';
 import { requestFromAPI } from '$lib/utilities/request-from-api';
 import { routeForApi } from '$lib/utilities/route-for-api';
@@ -24,56 +18,6 @@ type WorkflowInformation = {
   activityId: string;
 };
 
-export const failActivityTask = async ({
-  namespace,
-  workflowId,
-  runId,
-  activityId,
-  failure,
-  identity,
-  lastHeartbeatDetails,
-}: FailActivityTaskRequest &
-  WorkflowInformation): Promise<FailActivityTaskResponse> => {
-  const route = routeForApi('activity.fail', {
-    namespace,
-  });
-  return requestFromAPI<FailActivityTaskResponse>(route, {
-    notifyOnError: false,
-    options: {
-      body: stringifyWithBigInt({ failure, identity, lastHeartbeatDetails }),
-    },
-    params: {
-      workflowId,
-      runId,
-      activityId,
-    },
-  });
-};
-
-export const completeActivityTask = async ({
-  namespace,
-  workflowId,
-  runId,
-  activityId,
-  identity,
-  result,
-}: CompleteActivityTaskRequest &
-  WorkflowInformation): Promise<CompleteActivityTaskResponse> => {
-  const route = routeForApi('activity.complete', {
-    namespace,
-  });
-
-  return requestFromAPI(route, {
-    notifyOnError: false,
-    options: { body: stringifyWithBigInt({ identity, result }) },
-    params: {
-      workflowId,
-      runId,
-      activityId,
-    },
-  });
-};
-
 export const pauseActivity = async ({
   namespace,
   execution,
diff --git a/src/lib/types/api.ts b/src/lib/types/api.ts
index 439247d82a..ad8b19c279 100644
--- a/src/lib/types/api.ts
+++ b/src/lib/types/api.ts
@@ -23,8 +23,6 @@ export type WorkflowUpdateAPIRoutePath = 'workflow.update';
 export type WorkflowQueryAPIRoutePath = 'query';
 
 export type WorkflowActivitiesAPIRoutePath =
-  | 'activity.complete'
-  | 'activity.fail'
   | 'activity.pause'
   | 'activity.unpause'
   | 'activity.reset'
diff --git a/src/lib/types/events.ts b/src/lib/types/events.ts
index 4dd61d1802..9fdb51c043 100644
--- a/src/lib/types/events.ts
+++ b/src/lib/types/events.ts
@@ -272,12 +272,3 @@ export type NexusOperationCancelRequestedEvent =
   EventWithAttributes<'nexusOperationCancelRequestedEventAttributes'>;
 export type WorkflowPropertiesModifiedEvent =
   EventWithAttributes<'workflowPropertiesModifiedEventAttributes'>;
-
-export type FailActivityTaskRequest =
-  import('$lib/types').ActivityTaskFailedByIdRequest;
-export type FailActivityTaskResponse =
-  import('$lib/types').ActivityTaskFailedByIdResponse;
-export type CompleteActivityTaskRequest =
-  import('$lib/types').ActivityTaskCompletedByIdRequest;
-export type CompleteActivityTaskResponse =
-  import('$lib/types').ActivityTaskCompletedByIdResponse;
diff --git a/src/lib/utilities/route-for-api.ts b/src/lib/utilities/route-for-api.ts
index 2bdc7a2e7c..68241a08d2 100644
--- a/src/lib/utilities/route-for-api.ts
+++ b/src/lib/utilities/route-for-api.ts
@@ -162,12 +162,10 @@ export function pathForApi(
     workflows: `/namespaces/${parameters?.namespace}/workflows`,
     'workflows.archived': `/namespaces/${parameters?.namespace}/archived-workflows`,
     'workflows.count': `/namespaces/${parameters?.namespace}/workflow-count`,
-    'activity.complete': `/namespaces/${parameters?.namespace}/activities/complete-by-id`,
-    'activity.fail': `/namespaces/${parameters?.namespace}/activities/fail-by-id`,
-    'activity.pause': `/namespaces/${parameters?.namespace}/activities/pause`,
-    'activity.unpause': `/namespaces/${parameters?.namespace}/activities/unpause`,
-    'activity.reset': `/namespaces/${parameters?.namespace}/activities/reset`,
-    'activity.update-options': `/namespaces/${parameters?.namespace}/activities/update-options`,
+    'activity.pause': `/namespaces/${parameters?.namespace}/activities-deprecated/pause`,
+    'activity.unpause': `/namespaces/${parameters?.namespace}/activities-deprecated/unpause`,
+    'activity.reset': `/namespaces/${parameters?.namespace}/activities-deprecated/reset`,
+    'activity.update-options': `/namespaces/${parameters?.namespace}/activities-deprecated/update-options`,
     'batch-operations.list': `/namespaces/${parameters?.namespace}/batch-operations`,
     'batch-operations': `/namespaces/${parameters?.namespace}/batch-operations/${parameters?.batchJobId}`,
     'nexus-endpoints': '/nexus/endpoints',