diff --git a/src/content/docs/sandbox/configuration/environment-variables.mdx b/src/content/docs/sandbox/configuration/environment-variables.mdx
index fa00e71980b1fcf..152dbde0c877fa0 100644
--- a/src/content/docs/sandbox/configuration/environment-variables.mdx
+++ b/src/content/docs/sandbox/configuration/environment-variables.mdx
@@ -183,9 +183,10 @@ Then pass them to your sandbox:
 
 ```typescript
 import { getSandbox } from "@cloudflare/sandbox";
+export { Sandbox } from "@cloudflare/sandbox";
 
 interface Env {
-	Sandbox: DurableObjectNamespace;
+	Sandbox: DurableObjectNamespace<Sandbox>;
 	OPENAI_API_KEY: string;
 	DATABASE_URL: string;
 }
@@ -278,9 +279,10 @@ Bucket mounting requires production deployment. It does not work with `wrangler
 
 ```typescript
 import { getSandbox } from "@cloudflare/sandbox";
+export { Sandbox } from "@cloudflare/sandbox";
 
 interface Env {
-	Sandbox: DurableObjectNamespace;
+	Sandbox: DurableObjectNamespace<Sandbox>;
 	AWS_ACCESS_KEY_ID: string;
 	AWS_SECRET_ACCESS_KEY: string;
 }