diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 253540cc906ac..2090870ea92c9 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -5,6 +5,7 @@ on:
     branches:
       - main
       - '*.*.x'
+      - pyo3test
     tags:
       - '*.*'
       - '*.*.*'
diff --git a/src/rust/Cargo.lock b/src/rust/Cargo.lock
index 08a18882aebca..93258bdfa8681 100644
--- a/src/rust/Cargo.lock
+++ b/src/rust/Cargo.lock
@@ -278,9 +278,9 @@ dependencies = [
 
 [[package]]
 name = "pyo3"
-version = "0.21.0-beta.0"
+version = "0.21.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5d0c41d899f822e5f39186d6da130a822a0a43edb19992b51bf4ef6cd0b4cfd1"
+checksum = "a02a88a17e74cadbc8ce77855e1d6c8ad0ab82901a4a9b5046bd01c1c0bd95cd"
 dependencies = [
  "cfg-if",
  "indoc",
@@ -296,9 +296,9 @@ dependencies = [
 
 [[package]]
 name = "pyo3-build-config"
-version = "0.21.0-beta.0"
+version = "0.21.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5509c2aa78c7e770077e41ba86f806e60dcee812e924ccb2d6fe78c0a0128ce2"
+checksum = "a5eb0b6ecba38961f6f4bd6cd5906dfab3cd426ff37b2eed5771006aa31656f1"
 dependencies = [
  "once_cell",
  "target-lexicon",
@@ -306,9 +306,9 @@ dependencies = [
 
 [[package]]
 name = "pyo3-ffi"
-version = "0.21.0-beta.0"
+version = "0.21.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e6bb234a86ed619a661f3bb3c2493aaff9cb937e33e198d17f5f20a15881e155"
+checksum = "ba8a6e48a29b5d22e4fdaf132d8ba8d3203ee9f06362d48f244346902a594ec3"
 dependencies = [
  "libc",
  "pyo3-build-config",
@@ -316,9 +316,9 @@ dependencies = [
 
 [[package]]
 name = "pyo3-macros"
-version = "0.21.0-beta.0"
+version = "0.21.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f0b787de2c6832eb1eb393c9f82f976a5a87bda979780d9b853878846a8d2e4b"
+checksum = "4e80493c5965f94a747d0782a607b2328a4eea5391327b152b00e2f3b001cede"
 dependencies = [
  "proc-macro2",
  "pyo3-macros-backend",
@@ -328,9 +328,9 @@ dependencies = [
 
 [[package]]
 name = "pyo3-macros-backend"
-version = "0.21.0-beta.0"
+version = "0.21.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5e3b7beed357786d2afe845871964e824ad8af0df38a403f7d01cdc81aadb211"
+checksum = "fcd7d86f42004025200e12a6a8119bd878329e6fddef8178eaafa4e4b5906c5b"
 dependencies = [
  "heck",
  "proc-macro2",
diff --git a/src/rust/src/backend/x25519.rs b/src/rust/src/backend/x25519.rs
index f47f1dd68c5c7..1149e22dc237d 100644
--- a/src/rust/src/backend/x25519.rs
+++ b/src/rust/src/backend/x25519.rs
@@ -17,12 +17,64 @@ pub(crate) struct X25519PublicKey {
     pkey: openssl::pkey::PKey<openssl::pkey::Public>,
 }
 
-#[pyo3::prelude::pyfunction]
 fn generate_key() -> CryptographyResult<X25519PrivateKey> {
     Ok(X25519PrivateKey {
         pkey: openssl::pkey::PKey::generate_x25519()?,
     })
 }
+#[doc(hidden)]
+mod generate_key {
+    pub(crate) struct MakeDef;
+    pub const DEF: ::pyo3::impl_::pymethods::PyMethodDef = MakeDef::DEF;
+    pub fn add_to_module(
+        module: &::pyo3::Bound<'_, ::pyo3::types::PyModule>,
+    ) -> ::pyo3::PyResult<()> {
+        use ::pyo3::prelude::PyModuleMethods;
+        use ::std::convert::Into;
+        module
+            .add_function(
+                ::pyo3::types::PyCFunction::internal_new(
+                    module.py(),
+                    &DEF,
+                    module.into(),
+                )?,
+            )
+    }
+}
+impl generate_key::MakeDef {
+    const DEF: ::pyo3::impl_::pymethods::PyMethodDef = ::pyo3::impl_::pymethods::PyMethodDef::noargs(
+        "generate_key\0",
+        ::pyo3::impl_::pymethods::PyCFunction({
+            unsafe extern "C" fn trampoline(
+                _slf: *mut ::pyo3::ffi::PyObject,
+                _args: *mut ::pyo3::ffi::PyObject,
+            ) -> *mut ::pyo3::ffi::PyObject {
+                ::pyo3::impl_::trampoline::noargs(
+                    _slf,
+                    _args,
+                    __pyfunction_generate_key,
+                )
+            }
+            trampoline
+        }),
+        "generate_key()\n--\n\n\0",
+    );
+}
+#[allow(non_snake_case)]
+unsafe fn __pyfunction_generate_key<'py>(
+    py: ::pyo3::Python<'py>,
+    _slf: *mut ::pyo3::ffi::PyObject,
+) -> ::pyo3::PyResult<*mut ::pyo3::ffi::PyObject> {
+    let _slf_ref = &_slf;
+    let function = generate_key;
+    #[allow(clippy::let_unit_value)]
+    let result = ::pyo3::impl_::wrap::map_result_into_ptr(
+        py,
+        ::pyo3::impl_::wrap::OkWrap::wrap(function())
+            .map_err(::core::convert::Into::<::pyo3::PyErr>::into),
+    );
+    result
+}
 
 pub(crate) fn private_key_from_pkey(
     pkey: &openssl::pkey::PKeyRef<openssl::pkey::Private>,
diff --git a/src/rust/src/lib.rs b/src/rust/src/lib.rs
index b503779133e06..5d373167a81e5 100644
--- a/src/rust/src/lib.rs
+++ b/src/rust/src/lib.rs
@@ -3,7 +3,7 @@
 // for complete details.
 
 #![deny(rust_2018_idioms, clippy::undocumented_unsafe_blocks)]
-#![allow(unknown_lints, non_local_definitions, clippy::result_large_err)]
+#![allow(unknown_lints, non_local_definitions, clippy::result_large_err, dead_code, unused_imports)]
 
 #[cfg(CRYPTOGRAPHY_OPENSSL_300_OR_GREATER)]
 use crate::error::CryptographyResult;