diff --git a/src/agents/tools/sessions-helpers.ts b/src/agents/tools/sessions-helpers.ts
index 13bd8d2b169..d3ef713ef75 100644
--- a/src/agents/tools/sessions-helpers.ts
+++ b/src/agents/tools/sessions-helpers.ts
@@ -44,7 +44,7 @@ export type SessionListDeliveryContext = {
   accountId?: string;
 };
 
-export type SessionRunStatus = "running" | "done" | "failed" | "killed";
+export type SessionRunStatus = "running" | "done" | "failed" | "killed" | "timeout";
 
 export type SessionListRow = {
   key: string;
diff --git a/src/gateway/session-utils.types.ts b/src/gateway/session-utils.types.ts
index 3a92a94bd7b..8016f54bee7 100644
--- a/src/gateway/session-utils.types.ts
+++ b/src/gateway/session-utils.types.ts
@@ -13,7 +13,7 @@ export type GatewaySessionsDefaults = {
   contextTokens: number | null;
 };
 
-export type SessionRunStatus = "running" | "done" | "failed" | "killed";
+export type SessionRunStatus = "running" | "done" | "failed" | "killed" | "timeout";
 
 export type GatewaySessionRow = {
   key: string;
diff --git a/ui/src/ui/types.ts b/ui/src/ui/types.ts
index a7b1e42b165..b240c38c12f 100644
--- a/ui/src/ui/types.ts
+++ b/ui/src/ui/types.ts
@@ -364,7 +364,7 @@ export type AgentsFilesSetResult = {
   file: AgentFileEntry;
 };
 
-export type SessionRunStatus = "running" | "done" | "failed" | "killed";
+export type SessionRunStatus = "running" | "done" | "failed" | "killed" | "timeout";
 
 export type GatewaySessionRow = {
   key: string;