diff --git a/packages/app/src/screens/workspace/workspace-screen.tsx b/packages/app/src/screens/workspace/workspace-screen.tsx
index 3e5722964..e9b402145 100644
--- a/packages/app/src/screens/workspace/workspace-screen.tsx
+++ b/packages/app/src/screens/workspace/workspace-screen.tsx
@@ -983,6 +983,7 @@ function WorkspaceScreenContent({ serverId, workspaceId }: WorkspaceScreenProps)
       if (
         canPruneAgentTabs &&
         tab.target.kind === "agent" &&
+        !pinnedAgentIds.has(tab.target.agentId) &&
         shouldPruneWorkspaceAgentTab({
           agentId: tab.target.agentId,
           agentsHydrated: hasHydratedAgents,