diff --git a/.python-version b/.python-version
index da71773..0104088 100644
--- a/.python-version
+++ b/.python-version
@@ -1 +1 @@
-3.14.3
+3.14.4
diff --git a/README.md b/README.md
index d34bdf1..10c6a12 100644
--- a/README.md
+++ b/README.md
@@ -4,7 +4,7 @@
 ## 1. Environment
 
 - WSL (Ubuntu 25.10)
-- Python 3.14.3
+- Python 3.14.4
 
 ## 2. Reference
 
diff --git a/SECURITY.md b/SECURITY.md
index 3cedd30..2fdcafd 100644
--- a/SECURITY.md
+++ b/SECURITY.md
@@ -8,7 +8,7 @@
 | Component / Library  | Version(s) / Tooling                                                                                               | Notes                                                                   |
 | -------------------- | ------------------------------------------------------------------------------------------------------------------ | ----------------------------------------------------------------------- |
 | OS baseline          | WSL (Ubuntu 25.10)                                                                                                 | Shared environment across tracks.                                       |
-| Python runtime       | CPython 3.14.3 (`.python-version`)                                                                                 | Install dependencies via pip.                                           |
+| Python runtime       | CPython 3.14.4 (`.python-version`)                                                                                 | Install dependencies via pip.                                           |
 | Core Python packages | `pandas`, `Pillow`, `selenium`, `urllib3`                                                                          | See `requirements.txt`.                                                 |
 | Browser automation   | Google Chrome Stable + matching Chromedriver for installed Chrome (e.g., 131.x; keep in sync with Chrome releases) | Follow README steps to install binaries and export `PATH_TO_WEBDRIVER`. |