diff --git a/THIRD_PARTY.md b/THIRD_PARTY.md
index cd278cb..464cc27 100644
--- a/THIRD_PARTY.md
+++ b/THIRD_PARTY.md
@@ -15,8 +15,8 @@ is not committed (portfolio rules).
 | numpy | 2.5.4 | BSD-3-Clause (bundled 0BSD, MIT, Zlib, CC0-1.0) |
 | matplotlib | 3.11.2 | PSF-based matplotlib license |
 | PyYAML | 6.0.3 | MIT |
-| rosbags | 0.11.8 | Apache-2.0 |
+| rosbags | 0.11.9 | Apache-2.0 |
 | Pillow | 13.0.0 | MIT-CMU |
 | pytest | 9.1.1 | MIT |
-| Hypothesis | 6.170.1 | MPL-2.0 |
+| Hypothesis | 6.170.9 | MPL-2.0 |
 
diff --git a/analysis/requirements.txt b/analysis/requirements.txt
index 8d72d5c..b31b730 100644
--- a/analysis/requirements.txt
+++ b/analysis/requirements.txt
@@ -2,7 +2,7 @@
 numpy==2.5.4
 matplotlib==3.11.2
 PyYAML==6.0.3
-rosbags==0.11.8
+rosbags==0.11.9
 pillow==13.0.0
 pytest==9.1.1
-hypothesis==6.170.1
+hypothesis==6.170.9
diff --git a/docs/ENVIRONMENT.md b/docs/ENVIRONMENT.md
index c8cb2c7..89a992f 100644
--- a/docs/ENVIRONMENT.md
+++ b/docs/ENVIRONMENT.md
@@ -118,11 +118,11 @@ equivalent command-line capture.)
 | GitHub CLI | 2.102.0 (2026-09-30) | `gh --version` → `gh version 2.102.0 (2026-09-30)` |
 | FFmpeg | N-118205-gd3aa99a4f4-20250101 | `ffmpeg -version` → `ffmpeg version N-118205-gd3aa99a4f4-20250101` |
 | pytest | 9.1.1 | `.\.venv\Scripts\python -m pip freeze` → `pytest==9.1.1` |
-| Hypothesis | 6.170.1 | `.\.venv\Scripts\python -m pip freeze` → `hypothesis==6.170.1` |
+| Hypothesis | 6.170.9 | `.\.venv\Scripts\python -m pip freeze` → `hypothesis==6.170.9` |
 | NumPy | 2.5.4 | `.\.venv\Scripts\python -m pip freeze` → `numpy==2.5.4` |
 | matplotlib | 3.11.2 | `.\.venv\Scripts\python -m pip freeze` → `matplotlib==3.11.2` |
 | PyYAML | 6.0.3 | `.\.venv\Scripts\python -m pip freeze` → `PyYAML==6.0.3` |
-| rosbags / ros2 bag reader | 0.11.8 | `.\.venv\Scripts\python -m pip freeze` → `rosbags==0.11.8` |
+| rosbags / ros2 bag reader | 0.11.9 | `.\.venv\Scripts\python -m pip freeze` → `rosbags==0.11.9` |
 | Pillow | 13.0.0 | `.\.venv\Scripts\python -m pip freeze` → `pillow==13.0.0` |
 | Python (Windows .venv) | 3.12.10 | `py -3.12 --version` → `Python 3.12.10` |