diff --git a/apps/docs/pages/guides/ai/langchain.mdx b/apps/docs/pages/guides/ai/langchain.mdx
index 9b704e1c226..674e16272cd 100644
--- a/apps/docs/pages/guides/ai/langchain.mdx
+++ b/apps/docs/pages/guides/ai/langchain.mdx
@@ -101,8 +101,8 @@ import { createClient } from "@supabase/supabase-js";
 
 // First, follow set-up instructions above
 
-const privateKey = process.env.SUPABASE_PRIVATE_KEY;
-if (!privateKey) throw new Error(`Expected env var SUPABASE_PRIVATE_KEY`);
+const privateKey = process.env.SUPABASE_SERVICE_ROLE_KEY;
+if (!privateKey) throw new Error(`Expected env var SUPABASE_SERVICE_ROLE_KEY`);
 
 const url = process.env.SUPABASE_URL;
 if (!url) throw new Error(`Expected env var SUPABASE_URL`);
@@ -143,8 +143,8 @@ import { createClient } from "@supabase/supabase-js";
 
 // First, follow set-up instructions above
 
-const privateKey = process.env.SUPABASE_PRIVATE_KEY;
-if (!privateKey) throw new Error(`Expected env var SUPABASE_PRIVATE_KEY`);
+const privateKey = process.env.SUPABASE_SERVICE_ROLE_KEY;
+if (!privateKey) throw new Error(`Expected env var SUPABASE_SERVICE_ROLE_KEY`);
 
 const url = process.env.SUPABASE_URL;
 if (!url) throw new Error(`Expected env var SUPABASE_URL`);