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 6829424..db3d28e 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 0dc1e4c..ccb6048 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`)                                          | Managed with pyenv.                                                          |
+| Python runtime       | CPython 3.14.4 (`.python-version`)                                          | Managed with pyenv.                                                          |
 | Core Python packages | `numpy`, `pandas`, `scikit-learn`, `scipy`, `gensim`, `keras`, `matplotlib` | Install via `pip install -r requirements.txt` plus documentation references. |
 | NLP tooling          | MeCab + ipadic-NEologd, `lzma`, IPA fonts                                   | Follow README instructions for installation prior to running tokenizers.     |