diff --git a/CHANGELOG.md b/CHANGELOG.md
index e02fd0d2..cd77bcdc 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -52,6 +52,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Fix FFI definitions `PyDateTime_CAPI`. `PyDateTime_Date`, `PyASCIIObject`, `PyBaseExceptionObject`, `PyListObject`, and `PyTypeObject` on PyPy. [#2428](https://github.com/PyO3/pyo3/pull/2428)
 - Fix FFI definition `_inittab` field `initfunc` typo'd as `initfun`. [#2431](https://github.com/PyO3/pyo3/pull/2431)
 - Fix FFI definitions `_PyDateTime_BaseTime` and `_PyDateTime_BaseDateTime` incorrectly having `fold` member. [#2432](https://github.com/PyO3/pyo3/pull/2432)
+- Fix FFI definitions `PyTypeObject`. `PyHeapTypeObject`, and `PyCFunctionObject` having incorrect members on PyPy 3.9. [#2428](https://github.com/PyO3/pyo3/pull/2428)
 
 ## [0.16.5] - 2022-05-15
 
diff --git a/pyo3-ffi/src/cpython/object.rs b/pyo3-ffi/src/cpython/object.rs
index c81c703b..d8567129 100644
--- a/pyo3-ffi/src/cpython/object.rs
+++ b/pyo3-ffi/src/cpython/object.rs
@@ -214,15 +214,15 @@ pub type printfunc =
 #[repr(C)]
 #[derive(Debug, Copy, Clone)]
 pub struct PyTypeObject {
-    #[cfg(PyPy)]
+    #[cfg(all(PyPy, not(Py_3_9)))]
     pub ob_refcnt: Py_ssize_t,
-    #[cfg(PyPy)]
+    #[cfg(all(PyPy, not(Py_3_9)))]
     pub ob_pypy_link: Py_ssize_t,
-    #[cfg(PyPy)]
+    #[cfg(all(PyPy, not(Py_3_9)))]
     pub ob_type: *mut PyTypeObject,
-    #[cfg(PyPy)]
+    #[cfg(all(PyPy, not(Py_3_9)))]
     pub ob_size: Py_ssize_t,
-    #[cfg(not(PyPy))]
+    #[cfg(not(all(PyPy, not(Py_3_9))))]
     pub ob_base: object::PyVarObject,
     pub tp_name: *const c_char,
     pub tp_basicsize: Py_ssize_t,
@@ -276,7 +276,7 @@ pub struct PyTypeObject {
     pub tp_finalize: Option<object::destructor>,
     #[cfg(Py_3_8)]
     pub tp_vectorcall: Option<super::vectorcallfunc>,
-    #[cfg(all(Py_3_8, not(Py_3_9)))]
+    #[cfg(any(all(PyPy, Py_3_8), all(not(PyPy), Py_3_8, not(Py_3_9))))]
     pub tp_print: Option<printfunc>,
     #[cfg(PyPy)]
     pub tp_pypy_flags: std::os::raw::c_long,
@@ -304,6 +304,7 @@ pub struct PyHeapTypeObject {
     pub ht_name: *mut object::PyObject,
     pub ht_slots: *mut object::PyObject,
     pub ht_qualname: *mut object::PyObject,
+    #[cfg(not(PyPy))]
     pub ht_cached_keys: *mut c_void,
     #[cfg(Py_3_9)]
     pub ht_module: *mut object::PyObject,
diff --git a/pyo3-ffi/src/cpython/pyerrors.rs b/pyo3-ffi/src/cpython/pyerrors.rs
index 8464d4fa..dcf19dea 100644
--- a/pyo3-ffi/src/cpython/pyerrors.rs
+++ b/pyo3-ffi/src/cpython/pyerrors.rs
@@ -120,11 +120,17 @@ pub struct PyOSErrorObject {
 #[derive(Debug)]
 pub struct PyStopIterationObject {
     pub ob_base: PyObject,
+    #[cfg(not(PyPy))]
     pub dict: *mut PyObject,
+    #[cfg(not(PyPy))]
     pub args: *mut PyObject,
+    #[cfg(not(PyPy))]
     pub traceback: *mut PyObject,
+    #[cfg(not(PyPy))]
     pub context: *mut PyObject,
+    #[cfg(not(PyPy))]
     pub cause: *mut PyObject,
+    #[cfg(not(PyPy))]
     pub suppress_context: char,
 
     pub value: *mut PyObject,
diff --git a/pyo3-ffi/src/methodobject.rs b/pyo3-ffi/src/methodobject.rs
index c91857be..964c9a7c 100644
--- a/pyo3-ffi/src/methodobject.rs
+++ b/pyo3-ffi/src/methodobject.rs
@@ -10,7 +10,6 @@ pub struct PyCFunctionObject {
     pub m_ml: *mut PyMethodDef,
     pub m_self: *mut PyObject,
     pub m_module: *mut PyObject,
-    #[cfg(not(PyPy))]
     pub m_weakreflist: *mut PyObject,
     #[cfg(not(PyPy))]
     pub vectorcall: Option<crate::vectorcallfunc>,