diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 5dab43e..c955407 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -24,9 +24,9 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        python-version: ['3.9', '3.13', '3.14-dev']
+        python-version: ['3.10', '3.13', '3.14', '3.15-dev']
         os: [ubuntu-latest, macos-latest, windows-latest]
-    continue-on-error: ${{ matrix.python-version == '3.14-dev' }}
+    continue-on-error: ${{ matrix.python-version == '3.15-dev' }}
 
     steps:
     - uses: actions/checkout@v4
@@ -49,7 +49,7 @@ jobs:
 
     # FYI: Requires token to continue usage
     # - name: Upload to Codecov
-    #   if: matrix.os == 'ubuntu-latest' && matrix.python-version == 3.9
+    #   if: matrix.os == 'ubuntu-latest' && matrix.python-version == '3.10'
     #   uses: codecov/codecov-action@v1
     #   with:
     #     name: pytests
@@ -65,7 +65,7 @@ jobs:
     - name: Set up Python
       uses: actions/setup-python@v2
       with:
-        python-version: 3.9
+        python-version: '3.10'
 
     - name: Installation (deps and package)
       run: |
@@ -87,7 +87,7 @@ jobs:
     - name: Set up Python
       uses: actions/setup-python@v5
       with:
-        python-version: 3.9
+        python-version: '3.10'
     - name: install flit
       run: |
         pip install flit~=3.0
diff --git a/mdformat_myst/plugin.py b/mdformat_myst/plugin.py
index 077ce15..88f2a1a 100644
--- a/mdformat_myst/plugin.py
+++ b/mdformat_myst/plugin.py
@@ -23,11 +23,11 @@ def update_mdit(mdit: MarkdownIt) -> None:
         mdit.options["parser_extension"].append(tables_plugin)
         tables_plugin.update_mdit(mdit)
 
-    # Enable mdformat-frontmatter plugin
-    frontmatter_plugin = mdformat.plugins.PARSER_EXTENSIONS["frontmatter"]
-    if frontmatter_plugin not in mdit.options["parser_extension"]:
-        mdit.options["parser_extension"].append(frontmatter_plugin)
-        frontmatter_plugin.update_mdit(mdit)
+    # Enable mdformat-front-matters plugin
+    front_matters_plugin = mdformat.plugins.PARSER_EXTENSIONS["front_matters"]
+    if front_matters_plugin not in mdit.options["parser_extension"]:
+        mdit.options["parser_extension"].append(front_matters_plugin)
+        front_matters_plugin.update_mdit(mdit)
 
     # Enable mdformat-footnote plugin
     footnote_plugin = mdformat.plugins.PARSER_EXTENSIONS["footnote"]
diff --git a/pyproject.toml b/pyproject.toml
index 605f2b1..19c5378 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -18,14 +18,13 @@ classifiers = [
 ]
 keywords = "mdformat,markdown,formatter,gfm"
 
-requires-python=">=3.9"
-requires=[
+requires-python = ">=3.10"
+requires = [
     "mdformat >=0.7.0",
     "mdit-py-plugins >=0.3.0",
-    "mdformat-tables >=0.4.0; python_version < '3.10'",
-    "mdformat-frontmatter >=0.3.2",
+    "mdformat-front-matters >= 1.0.0",
     "mdformat-footnote >=0.1.1",
-    "mdformat-gfm >=1.0.0; python_version >= '3.10'",
+    "mdformat-gfm >=1.0.0",
     "ruamel.yaml >=0.16.0",
 ]
 
diff --git a/tox.ini b/tox.ini
index 3f8959b..8729f36 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,15 +1,15 @@
 [tox]
-envlist = py39
+envlist = py310
 isolated_build = True
 
-[testenv:py{39,311,313}]
+[testenv:py{310,314,315}]
 extras = test
 deps =
     black
     flake8
 commands = pytest {posargs}
 
-[testenv:py{39,311,313}-hook]
+[testenv:py{310,314,315}-hook]
 commands = pre-commit run --config .pre-commit-test.yaml {posargs:--all-files --verbose --show-diff-on-failure}
 
 [flake8]