diff --git a/pyproject.toml b/pyproject.toml
index e4f850f9..a849fd42 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -32,7 +32,7 @@ dependencies = [
     "watchdog>=6.0.0",
     "websocket-client==1.5.1",
     "websockets>=13.0",
-    "wecom-notifier>=0.3.1",
+    "wecom-notifier>=0.3.2",
     "youtube-transcript-api>=1.2.3",
     "yt-dlp[default]>=2025.12.8",
     "zlx-ops-sdk>=0.1,<0.2",
diff --git a/tests/unit/test_wecom_notifier_chunking.py b/tests/unit/test_wecom_notifier_chunking.py
new file mode 100644
index 00000000..73459536
--- /dev/null
+++ b/tests/unit/test_wecom_notifier_chunking.py
@@ -0,0 +1,33 @@
+"""Offline regression for wecom-notifier markdown_v2 chunk budget.
+
+Locks the 0.3.2 fix for zlxlabs/wecom-notifier#2: after short lines, a
+~4.5KB single line must still yield chunks within the WeCom markdown_v2
+UTF-8 byte budget (page markers included).
+"""
+
+from wecom_notifier import MessageSegmenter
+
+# Upstream closeout (wecom-notifier#2): final markdown_v2 budget includes
+# page indicator, fences, and moderation expansion.
+WECOM_MARKDOWN_V2_BUDGET_BYTES = 3800
+
+
+def test_markdown_v2_chunks_stay_within_wecom_budget():
+    short_lines = "short line\n" * 500
+    oversized_line = "X" * 4500
+    content = short_lines + oversized_line + "\ntail line\n" * 50
+    assert len(content.encode("utf-8")) >= 10_000
+    assert "\n" not in oversized_line
+    assert len(oversized_line.encode("utf-8")) >= 4500
+
+    segments = MessageSegmenter().segment(content, "markdown_v2")
+
+    assert segments
+    oversize = [
+        (index, len(segment.content.encode("utf-8")))
+        for index, segment in enumerate(segments)
+        if len(segment.content.encode("utf-8")) > WECOM_MARKDOWN_V2_BUDGET_BYTES
+    ]
+    assert oversize == [], (
+        f"chunks exceeded markdown_v2 budget {WECOM_MARKDOWN_V2_BUDGET_BYTES}: {oversize}"
+    )
diff --git a/uv.lock b/uv.lock
index 90ee06e1..7f723df1 100644
--- a/uv.lock
+++ b/uv.lock
@@ -4535,7 +4535,7 @@ requires-dist = [
     { name = "watchdog", specifier = ">=6.0.0" },
     { name = "websocket-client", specifier = "==1.5.1" },
     { name = "websockets", specifier = ">=13.0" },
-    { name = "wecom-notifier", specifier = ">=0.3.1" },
+    { name = "wecom-notifier", specifier = ">=0.3.2" },
     { name = "youtube-transcript-api", specifier = ">=1.2.3" },
     { name = "yt-dlp", extras = ["default"], specifier = ">=2025.12.8" },
     { name = "zlx-ops-sdk", specifier = ">=0.1,<0.2" },
@@ -4630,15 +4630,15 @@ wheels = [
 
 [[package]]
 name = "wecom-notifier"
-version = "0.3.1"
+version = "0.3.2"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
     { name = "loguru" },
     { name = "requests" },
 ]
-sdist = { url = "https://files.pythonhosted.org/packages/4d/50/7536121f0f9b479e2f8ad6de30d0dc3b10ef8d0b6c0f754b0b97a6ee7705/wecom_notifier-0.3.1.tar.gz", hash = "sha256:898461c049c9f7b911394d76e99d0beb681b0e941547a427489f8b96e2775d78", size = 84827, upload-time = "2026-01-31T13:32:30.125Z" }
+sdist = { url = "https://files.pythonhosted.org/packages/95/2b/1619f4a19cb96540407bb480b5dd37631399b4c2b46cc144e3a4dd58abb3/wecom_notifier-0.3.2.tar.gz", hash = "sha256:17559ceb7d968349a796ccd947136930ebb3315e4fab62b44932240a006411d0", size = 91936, upload-time = "2026-10-08T12:26:12.049Z" }
 wheels = [
-    { url = "https://files.pythonhosted.org/packages/73/64/486583a57fae810b0fc3e2c2a7912d8b37689851e2d5e8c1a73d6d12144b/wecom_notifier-0.3.1-py3-none-any.whl", hash = "sha256:7ee97770c7f25aaa42689a612f3c4a35d1dffbedc5e87f4229f1d1c2a36e62eb", size = 79302, upload-time = "2026-01-31T13:32:28.099Z" },
+    { url = "https://files.pythonhosted.org/packages/59/27/7bcbb7b8eb04278081826a9ce3d251e8a8d435eded1d89d6ca7abdbe7b8c/wecom_notifier-0.3.2-py3-none-any.whl", hash = "sha256:293348c70151ad9827772830f4eac21d672a23dc41ec843969f813dc7f019531", size = 86572, upload-time = "2026-10-08T12:26:10.213Z" },
 ]
 
 [[package]]