diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index 21ff429..e559cfd 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -7,6 +7,7 @@ on:
   push:
     branches:
       - main
+      - 'later-version-support-test'
     tags:
       - 'v*.*.*'
 
@@ -15,11 +16,11 @@ jobs:
     strategy:
       matrix:
         runs-on: [ ubuntu-latest, windows-latest, macos-latest ]
-        python-version: [ '3.8', '3.9', '3.10', '3.11', '3.12' ]
+        python-version: [ '3.10', '3.11', '3.12', '3.13', '3.14' ]
     runs-on: ${{ matrix.runs-on }}
     steps:
-    - uses: actions/checkout@v3
-    - uses: actions/setup-python@v4
+    - uses: actions/checkout@v6
+    - uses: actions/setup-python@v6
       with:
         python-version: ${{ matrix.python-version }}
     - uses: dtolnay/rust-toolchain@stable
@@ -41,63 +42,58 @@ jobs:
 
   pack-sdist:
     needs: [ test ]
-    if: "startsWith(github.ref, 'refs/tags/')"
+    if: "startsWith(github.ref, 'refs/tags/') || github.ref == 'refs/heads/later-version-support-test'"
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
-    - uses: actions/setup-python@v4
-      with:
-        python-version: '3.12'
+    - uses: actions/checkout@v6
     - uses: dtolnay/rust-toolchain@stable
     - name: Build package
       uses: PyO3/maturin-action@v1
       with:
         command: sdist
-    - name: Upload wheels
+    - name: Upload sdist
       uses: actions/upload-artifact@v4
       with:
-        name: wheels-${{ matrix.runs-on }}
+        name: sdist
         path: target/wheels
 
   pack-linux:
     needs: [ test ]
-    if: "startsWith(github.ref, 'refs/tags/')"
+    if: "startsWith(github.ref, 'refs/tags/') || github.ref == 'refs/heads/later-version-support-test'"
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: [ '3.8', '3.9', '3.10', '3.11', '3.12' ]
         target: [ x86_64, i686 ]
     steps:
-    - uses: actions/checkout@v3
-    - uses: actions/setup-python@v4
+    - uses: actions/checkout@v6
+    - uses: actions/setup-python@v6
       with:
-        python-version: ${{ matrix.python-version }}
+        python-version: '3.10'
     - uses: dtolnay/rust-toolchain@stable
     - name: Build package
       uses: PyO3/maturin-action@v1
       with:
         target: ${{ matrix.target }}
         manylinux: auto
-        args: -i ${{ matrix.python-version }} --release
+        args: -i 3.10 --release
     - name: Upload wheels
       uses: actions/upload-artifact@v4
       with:
-        name: wheels-${{ matrix.runs-on }}
+        name: wheels-linux-${{ matrix.target }}
         path: target/wheels
 
   pack-windows:
     needs: [ test ]
-    if: "startsWith(github.ref, 'refs/tags/')"
+    if: "startsWith(github.ref, 'refs/tags/') || github.ref == 'refs/heads/later-version-support-test'"
     runs-on: windows-latest
     strategy:
       matrix:
-        python-version: [ '3.8', '3.9', '3.10', '3.11', '3.12' ]
         target: [ x64, x86 ]
     steps:
-    - uses: actions/checkout@v3
-    - uses: actions/setup-python@v4
+    - uses: actions/checkout@v6
+    - uses: actions/setup-python@v6
       with:
-        python-version: ${{ matrix.python-version }}
+        python-version: '3.10'
         architecture: ${{ matrix.target }}
     - uses: dtolnay/rust-toolchain@stable
     - name: Build package
@@ -105,52 +101,47 @@ jobs:
       with:
         target: ${{ matrix.target }}
         manylinux: auto
-        args: -i ${{ matrix.python-version }} --release
+        args: -i 3.10 --release
     - name: Upload wheels
       uses: actions/upload-artifact@v4
       with:
-        name: wheels-${{ matrix.runs-on }}
+        name: wheels-windows-${{ matrix.target }}
         path: target/wheels
 
   pack-macos:
     needs: [ test ]
-    if: "startsWith(github.ref, 'refs/tags/')"
+    if: "startsWith(github.ref, 'refs/tags/') || github.ref == 'refs/heads/later-version-support-test'"
     runs-on: macos-latest
-    strategy:
-      matrix:
-        python-version: [ '3.8', '3.9', '3.10', '3.11', '3.12' ]
     steps:
-    - uses: actions/checkout@v3
-    - uses: actions/setup-python@v4
+    - uses: actions/checkout@v6
+    - uses: actions/setup-python@v6
       with:
-        python-version: ${{ matrix.python-version }}
+        python-version: '3.10'
     - uses: dtolnay/rust-toolchain@stable
     - name: Build package
       uses: PyO3/maturin-action@v1
       with:
-        target: ${{ matrix.target }}
         manylinux: auto
-        args: -i ${{ matrix.python-version }} --release --universal2
+        args: -i 3.10 --release --universal2
     - name: Upload wheels
       uses: actions/upload-artifact@v4
       with:
-        name: wheels-${{ matrix.runs-on }}
+        name: wheels-macos-universal2
         path: target/wheels
 
   release:
     name: Release
-    if: "startsWith(github.ref, 'refs/tags/')"
+    if: "startsWith(github.ref, 'refs/tags/') || github.ref == 'refs/heads/later-version-support-test'"
     needs: [ pack-sdist, pack-linux, pack-windows, pack-macos ]
     runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      id-token: write
     steps:
       - uses: actions/download-artifact@v4
         with:
           pattern: wheels-*
-          merge-multiple: true
-      - name: Publish to PyPI
-        uses: messense/maturin-action@v1
-        env:
-          MATURIN_PYPI_TOKEN: ${{ secrets.PYPI_API_TOKEN }}
-        with:
-          command: upload
-          args: --skip-existing *
+      - name: Install uv
+        uses: astral-sh/setup-uv@08807647e7069bb48b6ef5acd8ec9567f424441b # v8.1.0
+      - name: Show downloaded artifacts
+        run: find . -maxdepth 3 -type f | sort
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..2c96eb1
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
+target/
+Cargo.lock
diff --git a/Cargo.toml b/Cargo.toml
index 6f51ecf..02adff5 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -10,5 +10,5 @@ crate-type = ["cdylib"]
 [dependencies]
 hashbrown = "0.13.2" # MIT or Apache-2.0
 ouroboros = "0.15.6" # MIT or Apache-2.0
-pyo3 = { version = "0.18.2", features = ["extension-module"] } # Apache-2.0
+pyo3 = { version = "0.18.2", features = ["extension-module", "abi3-py310"] } # Apache-2.0
 vibrato_rust = { package = "vibrato", version = "0.5.0", default-features = false } # MIT or Apache-2.0
diff --git a/README.md b/README.md
index dbd1f2a..34f829f 100644
--- a/README.md
+++ b/README.md
@@ -42,7 +42,7 @@ Check the version number as shown below to use compatible models:
 ```python
 >>> import vibrato
 >>> vibrato.VIBRATO_VERSION
-'0.5.1'
+'0.5.2'
 
 ```
 
diff --git a/docs/source/examples.rst b/docs/source/examples.rst
index 5cff841..bfceaae 100644
--- a/docs/source/examples.rst
+++ b/docs/source/examples.rst
@@ -11,7 +11,7 @@ You can check the version number as shown below to use compatible models:
 
    >>> import vibrato
    >>> vibrato.VIBRATO_VERSION
-   '0.5.1'
+   '0.5.2'
 
 Examples:
 
diff --git a/pyproject.toml b/pyproject.toml
index 7bd8908..d167149 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,8 @@
 [build-system]
-requires = ["maturin>=0.14,<0.15"]
+requires = ["maturin>=1,<2"]
 build-backend = "maturin"
 
 [project]
 name = "vibrato"
+dynamic = ["version"]
+requires-python = ">=3.10"
diff --git a/src/lib.rs b/src/lib.rs
index fbfd459..bca4c96 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -91,6 +91,10 @@ struct TokenIterator {
 
 #[pymethods]
 impl TokenIterator {
+    fn __iter__(self_: PyRef<Self>) -> Py<Self> {
+        self_.into()
+    }
+
     fn __next__(&mut self, py: Python) -> Option<Token> {
         if self.index < self.len {
             let index = self.index;