diff --git a/.translate/state/os_time_iter.md.yml b/.translate/state/os_time_iter.md.yml
index f5d5a543..aa6aa3e9 100644
--- a/.translate/state/os_time_iter.md.yml
+++ b/.translate/state/os_time_iter.md.yml
@@ -1,6 +1,6 @@
-source-sha: 5efda5424e302d1d87c0d361b123177b842e23bc
-synced-at: "2026-07-22"
-model: claude-opus-4-8
-mode: NEW
+source-sha: b2551d1fb20b5f846017a800a3b8106a4e644f0a
+synced-at: "2026-07-31"
+model: claude-sonnet-5
+mode: UPDATE
 section-count: 4
-tool-version: 0.20.0
+tool-version: 0.24.0
diff --git a/lectures/os_time_iter.md b/lectures/os_time_iter.md
index a0158bd9..0c74e239 100644
--- a/lectures/os_time_iter.md
+++ b/lectures/os_time_iter.md
@@ -244,7 +244,6 @@ $$
 
 下面给出示例。
 
-
 ## 实现
 
 让我们转向实现。
@@ -324,8 +323,8 @@ def create_model(
     grid = np.linspace(1e-4, grid_max, grid_size)
 
     # 存储冲击（使用种子，以便结果可复现）
-    np.random.seed(seed)
-    shocks = np.exp(μ + ν * np.random.randn(shock_size))
+    rng = np.random.default_rng(seed)
+    shocks = np.exp(μ + ν * rng.standard_normal(shock_size))
 
     return Model(u, f, β, μ, ν, grid, shocks, α, u_prime, f_prime)
 ```
@@ -556,4 +555,4 @@ plt.show()
 ```
 
 ```{solution-end}
-```
\ No newline at end of file
+```