diff --git a/.github/workflows/format.yml b/.github/workflows/format.yml
new file mode 100644
index 00000000..b354139b
--- /dev/null
+++ b/.github/workflows/format.yml
@@ -0,0 +1,30 @@
+name: Format
+
+on:
+  pull_request:
+  push:
+    branches: [main]
+
+permissions:
+  contents: read
+
+jobs:
+  format:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: '3.10'
+
+      - name: Install pre-commit
+        run: pip install pre-commit
+
+      - name: Fetch main branch for diff
+        run: git fetch origin main
+
+      - name: Run pre-commit on changed files only
+        run: pre-commit run --from-ref origin/main --to-ref HEAD
diff --git a/.gitignore b/.gitignore
index 5daf1d05..7f9d3a91 100644
--- a/.gitignore
+++ b/.gitignore
@@ -19,6 +19,7 @@ tmp/
 #========================
 
 *.yml
+!.github/workflows/*.yml
 *.pyc
 *.bak
 *.pkl
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index e94aef70..d3467f90 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -6,7 +6,7 @@ default_language_version:
     python: python3.10
 repos:
     - repo: https://github.com/pre-commit/pre-commit-hooks
-      rev: v4.5.0 # Updated 2024/04
+      rev: v5.0.0 # Updated 2025/06
       hooks:
         - id: trailing-whitespace
         - id: end-of-file-fixer
@@ -16,11 +16,11 @@ repos:
           args:
           - --allow-multiple-documents
     - repo: https://github.com/crate-ci/typos
-      rev: v1.20.9 # Updated 2024/04
+      rev: v1.33.1 # Updated 2025/06
       hooks:
         - id: typos
     - repo: https://github.com/Lucas-C/pre-commit-hooks
-      rev: v1.5.1 # Updated 2023/07
+      rev: v1.5.5 # Updated 2025/06
       hooks:
         - id: insert-license
           name: insert-license-shell
@@ -43,12 +43,12 @@ repos:
           files: \.(py)$
           args: [--whitespaces-count, '4']
     - repo: https://github.com/psf/black-pre-commit-mirror
-      rev: 24.4.0 # Updated 2024/04
+      rev: 25.1.0 # Updated 2025/06
       hooks:
         - id: black
           language_version: python3.10
     - repo: https://github.com/pre-commit/mirrors-mypy
-      rev: v1.9.0 # Last checked 2024/04
+      rev: v1.16.0 # Last checked 2025/06
       hooks:
         - id: mypy
     - repo: local
@@ -62,6 +62,7 @@ repos:
           - -rn # Only display messages
           - -sn # Don't display the score
           - --source-roots=p-isa_tools/kerngen # Working directory
+          - --source-roots=assembler_tools/hec-assembler-tools # Added directory
         - id: clang-format-14
           name: clang-format-14
           entry: clang-format-14