diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6c41bcf3..610dd615 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -11,6 +11,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 
 ### Added
 - Add argument names to `TypeError` messages generated by pymethod wrappers. [#1212](https://github.com/PyO3/pyo3/pull/1212)
+- Add `PyEval_SetProfile` and `PyEval_SetTrace` to FFI. [#1255](https://github.com/PyO3/pyo3/pull/1255)
 
 ### Changed
 - Change `PyIterator` to be consistent with other native types: it is now used as `&PyIterator` instead of `PyIterator<'a>`. [#1176](https://github.com/PyO3/pyo3/pull/1176)
diff --git a/src/ffi/ceval.rs b/src/ffi/ceval.rs
index 31b00d7b..5df1d8c2 100644
--- a/src/ffi/ceval.rs
+++ b/src/ffi/ceval.rs
@@ -1,6 +1,6 @@
 use crate::ffi::code::FreeFunc;
 use crate::ffi::object::PyObject;
-use crate::ffi::pystate::PyThreadState;
+use crate::ffi::pystate::{PyThreadState, Py_tracefunc};
 use std::os::raw::{c_char, c_int, c_void};
 
 extern "C" {
@@ -67,6 +67,8 @@ extern "C" {
     pub fn PyEval_SaveThread() -> *mut PyThreadState;
     #[cfg_attr(PyPy, link_name = "PyPyEval_RestoreThread")]
     pub fn PyEval_RestoreThread(arg1: *mut PyThreadState);
+    pub fn PyEval_SetProfile(trace_func: Py_tracefunc, arg1: *mut PyObject);
+    pub fn PyEval_SetTrace(trace_func: Py_tracefunc, arg1: *mut PyObject);
 }
 
 #[cfg(py_sys_config = "WITH_THREAD")]
diff --git a/src/ffi/pystate.rs b/src/ffi/pystate.rs
index 1eaad51d..58e98875 100644
--- a/src/ffi/pystate.rs
+++ b/src/ffi/pystate.rs
@@ -1,4 +1,5 @@
 use crate::ffi::ceval::_PyFrameEvalFunction;
+use crate::ffi::frameobject::PyFrameObject;
 use crate::ffi::moduleobject::PyModuleDef;
 use crate::ffi::object::PyObject;
 use std::os::raw::{c_int, c_long};
@@ -67,3 +68,10 @@ extern "C" {
 pub unsafe fn PyThreadState_GET() -> *mut PyThreadState {
     PyThreadState_Get()
 }
+
+pub type Py_tracefunc = extern "C" fn(
+    obj: *mut PyObject,
+    frame: *mut PyFrameObject,
+    what: c_int,
+    arg: *mut PyObject,
+) -> c_int;