diff --git a/.github/workflows/ruff-check.yml b/.github/workflows/ruff-check.yml
index 9dcacbc..d9d1952 100644
--- a/.github/workflows/ruff-check.yml
+++ b/.github/workflows/ruff-check.yml
@@ -9,14 +9,7 @@ jobs:
         uses: actions/setup-python@v4
         with:
           python-version: "3.13"
-      - name: Install dependencies
-        run: |
-          python -m pip install --upgrade pip
-          pip install ruff
-      # Include `--format=github` to enable automatic inline annotations.
-      - name: Run Ruff
-        run: ruff check --output-format=github .
-        continue-on-error: false
-      - name: Run Ruff format
-        run: ruff format --check .
+      - uses: astral-sh/ruff-action@v2
+        with:
+            args: "format --check --output-format github"
         continue-on-error: false
diff --git a/spellchecker/spellchecker.py b/spellchecker/spellchecker.py
index 53df1fe..b2e208c 100644
--- a/spellchecker/spellchecker.py
+++ b/spellchecker/spellchecker.py
@@ -513,7 +513,7 @@ def _update_dictionary(self) -> None:
         self._total_words = sum(self._dictionary.values())
         self._unique_words = len(self._dictionary.keys())
         self._letters = set()
-        for key in self._dictionary:
-            if len(key) > self._longest_word_length:
-                self._longest_word_length = len(key)
-            self._letters.update(key)
+        for l in self._dictionary:
+            if len(l) > self._longest_word_length:
+                self._longest_word_length = len(l)
+            self._letters.update(l)