diff --git a/pyproject.toml b/pyproject.toml
index 755b8cfc..ebb4f3f9 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,5 +1,5 @@
 [build-system]
-requires = ["setuptools>=61.2", "vstcompile~=3.0", "cython~=3.0.11", "setuptools-rust~=1.9"]
+requires = ["setuptools>=61.2", "vstcompile~=3.0", "cython~=3.0.11", "setuptools-rust~=1.10.2"]
 build-backend = "setuptools.build_meta"
 
 [project]
diff --git a/tox_build.ini b/tox_build.ini
index f2b8057f..7d72bc9f 100644
--- a/tox_build.ini
+++ b/tox_build.ini
@@ -11,6 +11,7 @@ setenv =
     build: DONT_YARN=true
     NOT_COMPRESS = 1
     wheel: BUILD_OPTIMIZATION=true
+    py313: PYO3_USE_ABI3_FORWARD_COMPATIBILITY=1
 changedir = {envdir}
 allowlist_externals =
     rm
@@ -28,7 +29,7 @@ deps =
     build~=1.0.3
     wheel==0.41.3
     setuptools>=61.2.0
-    setuptools-rust==1.9.0
+    setuptools-rust==1.10.2
     -rrequirements-doc.txt
     vstcompile~=3.0
 
diff --git a/vstutils/__init__.py b/vstutils/__init__.py
index 08a9a550..96a4b639 100644
--- a/vstutils/__init__.py
+++ b/vstutils/__init__.py
@@ -1,2 +1,2 @@
 # pylint: disable=django-not-available
-__version__: str = '5.11.7'
+__version__: str = '5.11.8'
diff --git a/vstutils_tools/Cargo.lock b/vstutils_tools/Cargo.lock
index 63cc8df3..ff76e1e5 100644
--- a/vstutils_tools/Cargo.lock
+++ b/vstutils_tools/Cargo.lock
@@ -8,12 +8,6 @@ version = "1.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0c4b4d0bd25bd0b74681c0ad21497610ce1b7c91b1022cd21c80c6fbdd9476b0"
 
-[[package]]
-name = "bitflags"
-version = "2.6.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b048fb63fd8b5923fc5aa7b340d8e156aec7ec02f0c78fa8a6ddc2613f6f71de"
-
 [[package]]
 name = "cfg-if"
 version = "1.0.0"
@@ -22,9 +16,9 @@ checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
 
 [[package]]
 name = "heck"
-version = "0.4.1"
+version = "0.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "95505c38b4572b2d910cecb0281560f54b440a19336cbbcb27bf6ce6adc6f5a8"
+checksum = "2304e00983f87ffb38b55b444b5e3b60a884b5d30c0fca7d82fe33449bbe55ea"
 
 [[package]]
 name = "indoc"
@@ -38,16 +32,6 @@ version = "0.2.155"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "97b3888a4aecf77e811145cadf6eef5901f4782c53886191b2f693f24761847c"
 
-[[package]]
-name = "lock_api"
-version = "0.4.12"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "07af8b9cdd281b7915f413fa73f29ebd5d55d0d3f0155584dade1ff18cea1b17"
-dependencies = [
- "autocfg",
- "scopeguard",
-]
-
 [[package]]
 name = "memoffset"
 version = "0.9.1"
@@ -63,29 +47,6 @@ version = "1.19.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3fdb12b2476b595f9358c5161aa467c2438859caa136dec86c26fdd2efe17b92"
 
-[[package]]
-name = "parking_lot"
-version = "0.12.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f1bf18183cf54e8d6059647fc3063646a1801cf30896933ec2311622cc4b9a27"
-dependencies = [
- "lock_api",
- "parking_lot_core",
-]
-
-[[package]]
-name = "parking_lot_core"
-version = "0.9.10"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1e401f977ab385c9e4e3ab30627d6f26d00e2c73eef317493c4ec6d468726cf8"
-dependencies = [
- "cfg-if",
- "libc",
- "redox_syscall",
- "smallvec",
- "windows-targets",
-]
-
 [[package]]
 name = "portable-atomic"
 version = "1.7.0"
@@ -103,15 +64,15 @@ dependencies = [
 
 [[package]]
 name = "pyo3"
-version = "0.21.2"
+version = "0.22.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a5e00b96a521718e08e03b1a622f01c8a8deb50719335de3f60b3b3950f069d8"
+checksum = "f402062616ab18202ae8319da13fa4279883a2b8a9d9f83f20dbade813ce1884"
 dependencies = [
  "cfg-if",
  "indoc",
  "libc",
  "memoffset",
- "parking_lot",
+ "once_cell",
  "portable-atomic",
  "pyo3-build-config",
  "pyo3-ffi",
@@ -121,9 +82,9 @@ dependencies = [
 
 [[package]]
 name = "pyo3-build-config"
-version = "0.21.2"
+version = "0.22.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7883df5835fafdad87c0d888b266c8ec0f4c9ca48a5bed6bbb592e8dedee1b50"
+checksum = "b14b5775b5ff446dd1056212d778012cbe8a0fbffd368029fd9e25b514479c38"
 dependencies = [
  "once_cell",
  "target-lexicon",
@@ -131,9 +92,9 @@ dependencies = [
 
 [[package]]
 name = "pyo3-ffi"
-version = "0.21.2"
+version = "0.22.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "01be5843dc60b916ab4dad1dca6d20b9b4e6ddc8e15f50c47fe6d85f1fb97403"
+checksum = "9ab5bcf04a2cdcbb50c7d6105de943f543f9ed92af55818fd17b660390fc8636"
 dependencies = [
  "libc",
  "pyo3-build-config",
@@ -141,9 +102,9 @@ dependencies = [
 
 [[package]]
 name = "pyo3-macros"
-version = "0.21.2"
+version = "0.22.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "77b34069fc0682e11b31dbd10321cbf94808394c56fd996796ce45217dfac53c"
+checksum = "0fd24d897903a9e6d80b968368a34e1525aeb719d568dba8b3d4bfa5dc67d453"
 dependencies = [
  "proc-macro2",
  "pyo3-macros-backend",
@@ -153,9 +114,9 @@ dependencies = [
 
 [[package]]
 name = "pyo3-macros-backend"
-version = "0.21.2"
+version = "0.22.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "08260721f32db5e1a5beae69a55553f56b99bd0e1c3e6e0a5e8851a9d0f5a85c"
+checksum = "36c011a03ba1e50152b4b394b479826cad97e7a21eb52df179cd91ac411cbfbe"
 dependencies = [
  "heck",
  "proc-macro2",
@@ -173,27 +134,6 @@ dependencies = [
  "proc-macro2",
 ]
 
-[[package]]
-name = "redox_syscall"
-version = "0.5.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2a908a6e00f1fdd0dfd9c0eb08ce85126f6d8bbda50017e74bc4a4b7d4a926a4"
-dependencies = [
- "bitflags",
-]
-
-[[package]]
-name = "scopeguard"
-version = "1.2.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "94143f37725109f92c262ed2cf5e59bce7498c01bcc1502d7b9afe439a4e9f49"
-
-[[package]]
-name = "smallvec"
-version = "1.13.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3c5e1a9a646d36c3599cd173a41282daf47c44583ad367b8e6837255952e5c67"
-
 [[package]]
 name = "syn"
 version = "2.0.72"
@@ -229,67 +169,3 @@ version = "0.1.0"
 dependencies = [
  "pyo3",
 ]
-
-[[package]]
-name = "windows-targets"
-version = "0.52.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9b724f72796e036ab90c1021d4780d4d3d648aca59e491e6b98e725b84e99973"
-dependencies = [
- "windows_aarch64_gnullvm",
- "windows_aarch64_msvc",
- "windows_i686_gnu",
- "windows_i686_gnullvm",
- "windows_i686_msvc",
- "windows_x86_64_gnu",
- "windows_x86_64_gnullvm",
- "windows_x86_64_msvc",
-]
-
-[[package]]
-name = "windows_aarch64_gnullvm"
-version = "0.52.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "32a4622180e7a0ec044bb555404c800bc9fd9ec262ec147edd5989ccd0c02cd3"
-
-[[package]]
-name = "windows_aarch64_msvc"
-version = "0.52.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "09ec2a7bb152e2252b53fa7803150007879548bc709c039df7627cabbd05d469"
-
-[[package]]
-name = "windows_i686_gnu"
-version = "0.52.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8e9b5ad5ab802e97eb8e295ac6720e509ee4c243f69d781394014ebfe8bbfa0b"
-
-[[package]]
-name = "windows_i686_gnullvm"
-version = "0.52.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0eee52d38c090b3caa76c563b86c3a4bd71ef1a819287c19d586d7334ae8ed66"
-
-[[package]]
-name = "windows_i686_msvc"
-version = "0.52.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "240948bc05c5e7c6dabba28bf89d89ffce3e303022809e73deaefe4f6ec56c66"
-
-[[package]]
-name = "windows_x86_64_gnu"
-version = "0.52.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "147a5c80aabfbf0c7d901cb5895d1de30ef2907eb21fbbab29ca94c5b08b1a78"
-
-[[package]]
-name = "windows_x86_64_gnullvm"
-version = "0.52.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "24d5b23dc417412679681396f2b49f3de8c1473deb516bd34410872eff51ed0d"
-
-[[package]]
-name = "windows_x86_64_msvc"
-version = "0.52.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "589f6da84c646204747d1270a2a5661ea66ed1cced2631d546fdfb155959f9ec"
diff --git a/vstutils_tools/Cargo.toml b/vstutils_tools/Cargo.toml
index 180e541e..6030dfbd 100644
--- a/vstutils_tools/Cargo.toml
+++ b/vstutils_tools/Cargo.toml
@@ -4,7 +4,7 @@ version = "0.1.0"
 edition = "2018"
 
 [dependencies]
-pyo3 = { version = "0.21.2", features = ["extension-module", "abi3"] }
+pyo3 = { version = "0.22.6", features = ["extension-module", "abi3"] }
 
 [lib]
 crate-type = ["cdylib"]
diff --git a/vstutils_tools/src/lib.rs b/vstutils_tools/src/lib.rs
index c6a1443f..5378c332 100644
--- a/vstutils_tools/src/lib.rs
+++ b/vstutils_tools/src/lib.rs
@@ -29,7 +29,7 @@ fn get_file_value(filename: &str, default: Option<&str>, raise_error: Option<boo
 
 /// A Python module implemented in Rust.
 #[pymodule]
-fn _tools(_py: Python, m: &PyModule) -> PyResult<()> {
+fn _tools(_py: Python, m: &Bound<'_, PyModule>) -> PyResult<()> {
     m.add_function(wrap_pyfunction!(get_file_value, m)?)?;
     Ok(())
 }
diff --git a/vstutils_utils/Cargo.lock b/vstutils_utils/Cargo.lock
index f56244ea..ae740008 100644
--- a/vstutils_utils/Cargo.lock
+++ b/vstutils_utils/Cargo.lock
@@ -14,12 +14,6 @@ version = "0.22.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "72b3254f16251a8381aa12e40e3c4d2f0199f8c6508fbecb9d91f575e0fbb8c6"
 
-[[package]]
-name = "bitflags"
-version = "2.6.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b048fb63fd8b5923fc5aa7b340d8e156aec7ec02f0c78fa8a6ddc2613f6f71de"
-
 [[package]]
 name = "cfg-if"
 version = "1.0.0"
@@ -28,9 +22,9 @@ checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
 
 [[package]]
 name = "heck"
-version = "0.4.1"
+version = "0.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "95505c38b4572b2d910cecb0281560f54b440a19336cbbcb27bf6ce6adc6f5a8"
+checksum = "2304e00983f87ffb38b55b444b5e3b60a884b5d30c0fca7d82fe33449bbe55ea"
 
 [[package]]
 name = "indoc"
@@ -44,16 +38,6 @@ version = "0.2.155"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "97b3888a4aecf77e811145cadf6eef5901f4782c53886191b2f693f24761847c"
 
-[[package]]
-name = "lock_api"
-version = "0.4.12"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "07af8b9cdd281b7915f413fa73f29ebd5d55d0d3f0155584dade1ff18cea1b17"
-dependencies = [
- "autocfg",
- "scopeguard",
-]
-
 [[package]]
 name = "memoffset"
 version = "0.9.1"
@@ -69,29 +53,6 @@ version = "1.19.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3fdb12b2476b595f9358c5161aa467c2438859caa136dec86c26fdd2efe17b92"
 
-[[package]]
-name = "parking_lot"
-version = "0.12.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f1bf18183cf54e8d6059647fc3063646a1801cf30896933ec2311622cc4b9a27"
-dependencies = [
- "lock_api",
- "parking_lot_core",
-]
-
-[[package]]
-name = "parking_lot_core"
-version = "0.9.10"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1e401f977ab385c9e4e3ab30627d6f26d00e2c73eef317493c4ec6d468726cf8"
-dependencies = [
- "cfg-if",
- "libc",
- "redox_syscall",
- "smallvec",
- "windows-targets",
-]
-
 [[package]]
 name = "portable-atomic"
 version = "1.6.0"
@@ -109,15 +70,15 @@ dependencies = [
 
 [[package]]
 name = "pyo3"
-version = "0.21.2"
+version = "0.22.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a5e00b96a521718e08e03b1a622f01c8a8deb50719335de3f60b3b3950f069d8"
+checksum = "f402062616ab18202ae8319da13fa4279883a2b8a9d9f83f20dbade813ce1884"
 dependencies = [
  "cfg-if",
  "indoc",
  "libc",
  "memoffset",
- "parking_lot",
+ "once_cell",
  "portable-atomic",
  "pyo3-build-config",
  "pyo3-ffi",
@@ -127,9 +88,9 @@ dependencies = [
 
 [[package]]
 name = "pyo3-build-config"
-version = "0.21.2"
+version = "0.22.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7883df5835fafdad87c0d888b266c8ec0f4c9ca48a5bed6bbb592e8dedee1b50"
+checksum = "b14b5775b5ff446dd1056212d778012cbe8a0fbffd368029fd9e25b514479c38"
 dependencies = [
  "once_cell",
  "target-lexicon",
@@ -137,9 +98,9 @@ dependencies = [
 
 [[package]]
 name = "pyo3-ffi"
-version = "0.21.2"
+version = "0.22.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "01be5843dc60b916ab4dad1dca6d20b9b4e6ddc8e15f50c47fe6d85f1fb97403"
+checksum = "9ab5bcf04a2cdcbb50c7d6105de943f543f9ed92af55818fd17b660390fc8636"
 dependencies = [
  "libc",
  "pyo3-build-config",
@@ -147,9 +108,9 @@ dependencies = [
 
 [[package]]
 name = "pyo3-macros"
-version = "0.21.2"
+version = "0.22.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "77b34069fc0682e11b31dbd10321cbf94808394c56fd996796ce45217dfac53c"
+checksum = "0fd24d897903a9e6d80b968368a34e1525aeb719d568dba8b3d4bfa5dc67d453"
 dependencies = [
  "proc-macro2",
  "pyo3-macros-backend",
@@ -159,9 +120,9 @@ dependencies = [
 
 [[package]]
 name = "pyo3-macros-backend"
-version = "0.21.2"
+version = "0.22.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "08260721f32db5e1a5beae69a55553f56b99bd0e1c3e6e0a5e8851a9d0f5a85c"
+checksum = "36c011a03ba1e50152b4b394b479826cad97e7a21eb52df179cd91ac411cbfbe"
 dependencies = [
  "heck",
  "proc-macro2",
@@ -179,27 +140,6 @@ dependencies = [
  "proc-macro2",
 ]
 
-[[package]]
-name = "redox_syscall"
-version = "0.5.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c82cf8cff14456045f55ec4241383baeff27af886adb72ffb2162f99911de0fd"
-dependencies = [
- "bitflags",
-]
-
-[[package]]
-name = "scopeguard"
-version = "1.2.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "94143f37725109f92c262ed2cf5e59bce7498c01bcc1502d7b9afe439a4e9f49"
-
-[[package]]
-name = "smallvec"
-version = "1.13.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3c5e1a9a646d36c3599cd173a41282daf47c44583ad367b8e6837255952e5c67"
-
 [[package]]
 name = "syn"
 version = "2.0.70"
@@ -236,67 +176,3 @@ dependencies = [
  "base64",
  "pyo3",
 ]
-
-[[package]]
-name = "windows-targets"
-version = "0.52.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9b724f72796e036ab90c1021d4780d4d3d648aca59e491e6b98e725b84e99973"
-dependencies = [
- "windows_aarch64_gnullvm",
- "windows_aarch64_msvc",
- "windows_i686_gnu",
- "windows_i686_gnullvm",
- "windows_i686_msvc",
- "windows_x86_64_gnu",
- "windows_x86_64_gnullvm",
- "windows_x86_64_msvc",
-]
-
-[[package]]
-name = "windows_aarch64_gnullvm"
-version = "0.52.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "32a4622180e7a0ec044bb555404c800bc9fd9ec262ec147edd5989ccd0c02cd3"
-
-[[package]]
-name = "windows_aarch64_msvc"
-version = "0.52.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "09ec2a7bb152e2252b53fa7803150007879548bc709c039df7627cabbd05d469"
-
-[[package]]
-name = "windows_i686_gnu"
-version = "0.52.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8e9b5ad5ab802e97eb8e295ac6720e509ee4c243f69d781394014ebfe8bbfa0b"
-
-[[package]]
-name = "windows_i686_gnullvm"
-version = "0.52.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0eee52d38c090b3caa76c563b86c3a4bd71ef1a819287c19d586d7334ae8ed66"
-
-[[package]]
-name = "windows_i686_msvc"
-version = "0.52.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "240948bc05c5e7c6dabba28bf89d89ffce3e303022809e73deaefe4f6ec56c66"
-
-[[package]]
-name = "windows_x86_64_gnu"
-version = "0.52.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "147a5c80aabfbf0c7d901cb5895d1de30ef2907eb21fbbab29ca94c5b08b1a78"
-
-[[package]]
-name = "windows_x86_64_gnullvm"
-version = "0.52.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "24d5b23dc417412679681396f2b49f3de8c1473deb516bd34410872eff51ed0d"
-
-[[package]]
-name = "windows_x86_64_msvc"
-version = "0.52.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "589f6da84c646204747d1270a2a5661ea66ed1cced2631d546fdfb155959f9ec"
diff --git a/vstutils_utils/Cargo.toml b/vstutils_utils/Cargo.toml
index 113c65c5..e5a7c699 100644
--- a/vstutils_utils/Cargo.toml
+++ b/vstutils_utils/Cargo.toml
@@ -4,7 +4,7 @@ version = "0.1.0"
 edition = "2018"
 
 [dependencies]
-pyo3 = { version = "0.21.2", features = ["extension-module", "abi3"] }
+pyo3 = { version = "0.22.6", features = ["extension-module", "abi3"] }
 base64 = "0.22.1"
 
 [lib]
diff --git a/vstutils_utils/src/lib.rs b/vstutils_utils/src/lib.rs
index df84faed..d6ea657e 100644
--- a/vstutils_utils/src/lib.rs
+++ b/vstutils_utils/src/lib.rs
@@ -1,4 +1,5 @@
 use pyo3::prelude::*;
+use pyo3::wrap_pyfunction;
 use base64::{engine::general_purpose, Engine as _};
 
 /// Encode string by Vigenère cipher.
@@ -34,19 +35,21 @@ fn encode(key: &str, clear: &str) -> PyResult<String> {
 /// * Decoded string.
 #[pyfunction]
 fn decode(key: &str, enc: &str) -> PyResult<String> {
-    let enc_bytes = general_purpose::URL_SAFE.decode(enc).map_err(|e| pyo3::exceptions::PyValueError::new_err(e.to_string()))?;
+    let enc_bytes = general_purpose::URL_SAFE.decode(enc)
+        .map_err(|e| pyo3::exceptions::PyValueError::new_err(e.to_string()))?;
     let mut dec = Vec::with_capacity(enc_bytes.len());
     for (i, &enc_c) in enc_bytes.iter().enumerate() {
         let key_c = key.as_bytes()[i % key.len()];
         dec.push(((256 + enc_c as u16 - key_c as u16) % 256) as u8);
     }
-    let decoded = String::from_utf8(dec).map_err(|e| pyo3::exceptions::PyValueError::new_err(e.to_string()))?;
+    let decoded = String::from_utf8(dec)
+        .map_err(|e| pyo3::exceptions::PyValueError::new_err(e.to_string()))?;
     Ok(decoded)
 }
 
 /// Define the Python module.
 #[pymodule]
-fn _utils(py: Python, m: &PyModule) -> PyResult<()> {
+fn _utils(_py: Python, m: &Bound<'_, PyModule>) -> PyResult<()> {
     m.add_function(wrap_pyfunction!(encode, m)?)?;
     m.add_function(wrap_pyfunction!(decode, m)?)?;
     Ok(())