diff --git a/codex-rs/core/tests/stream_no_completed.rs b/codex-rs/core/tests/stream_no_completed.rs
index cfb7d44b2c..5b50d7ac26 100644
--- a/codex-rs/core/tests/stream_no_completed.rs
+++ b/codex-rs/core/tests/stream_no_completed.rs
@@ -6,6 +6,7 @@ use std::time::Duration;
 use codex_core::Codex;
 use codex_core::ModelProviderInfo;
 use codex_core::config::Config;
+use codex_core::exec::CODEX_SANDBOX_NETWORK_DISABLED_ENV_VAR;
 use codex_core::protocol::InputItem;
 use codex_core::protocol::Op;
 use tokio::time::timeout;
@@ -34,6 +35,13 @@ data: {{\"type\":\"response.completed\",\"response\":{{\"id\":\"{}\",\"output\":
 async fn retries_on_early_close() {
     #![allow(clippy::unwrap_used)]
 
+    if std::env::var(CODEX_SANDBOX_NETWORK_DISABLED_ENV_VAR).is_ok() {
+        println!(
+            "Skipping test because it cannot execute when network is disabled in a Codex sandbox."
+        );
+        return;
+    }
+
     let server = MockServer::start().await;
 
     struct SeqResponder;