diff --git a/robotpy_build/include/robotpy_build.h b/robotpy_build/include/robotpy_build.h
index b585fb96..0efd2cfb 100644
--- a/robotpy_build/include/robotpy_build.h
+++ b/robotpy_build/include/robotpy_build.h
@@ -14,11 +14,6 @@ namespace rpygen {
 struct EmptyTrampolineCfg {};
 };
 
-// robotpy-build specific extensions waiting for inclusion into pybind11
-namespace rpybuild_ext {
-using py::raise_from;
-} // namespace rpybuild_ext
-
 #define RPYBUILD_BAD_TRAMPOLINE \
     "has an abstract trampoline -- and they must never be abstract! One of " \
     "the generated override methods doesn't match the original class or its " \
diff --git a/tests/cpp/rpytest/ft/__init__.py b/tests/cpp/rpytest/ft/__init__.py
index a1c25b0d..2851c37c 100644
--- a/tests/cpp/rpytest/ft/__init__.py
+++ b/tests/cpp/rpytest/ft/__init__.py
@@ -114,8 +114,6 @@
     fnSimpleDefaultParam,
     get123,
     important_retval,
-    raise_from,
-    raise_from_already_set,
     subpkg,
 )
 
@@ -232,8 +230,6 @@
     "fnSimpleDefaultParam",
     "get123",
     "important_retval",
-    "raise_from",
-    "raise_from_already_set",
     "subpkg",
 ]
 
diff --git a/tests/cpp/rpytest/ft/src/ft.cpp b/tests/cpp/rpytest/ft/src/ft.cpp
index 94c0d113..c16827fb 100644
--- a/tests/cpp/rpytest/ft/src/ft.cpp
+++ b/tests/cpp/rpytest/ft/src/ft.cpp
@@ -4,20 +4,4 @@
 RPYBUILD_PYBIND11_MODULE(m)
 {
     initWrapper(m);
-
-    m.def("raise_from", []() {
-        PyErr_SetString(PyExc_ValueError, "inner");
-        rpybuild_ext::raise_from(PyExc_ValueError, "outer");
-        throw py::error_already_set();
-    });
-
-    m.def("raise_from_already_set", []() {
-        try {
-            PyErr_SetString(PyExc_ValueError, "inner");
-            throw py::error_already_set();
-        } catch (py::error_already_set& e) {
-            rpybuild_ext::raise_from(e, PyExc_ValueError, "outer");
-            throw py::error_already_set();
-        }
-    });
 }
\ No newline at end of file
diff --git a/tests/test_ft_misc.py b/tests/test_ft_misc.py
index 77193eff..5daf9f7d 100644
--- a/tests/test_ft_misc.py
+++ b/tests/test_ft_misc.py
@@ -2,25 +2,6 @@
 import pytest
 import re
 
-#
-# main module
-#
-
-
-def test_raise_from():
-    with pytest.raises(ValueError) as excinfo:
-        ft.raise_from()
-    assert str(excinfo.value) == "outer"
-    assert str(excinfo.value.__cause__) == "inner"
-
-
-def test_raise_from_already_set():
-    with pytest.raises(ValueError) as excinfo:
-        ft.raise_from_already_set()
-    assert str(excinfo.value) == "outer"
-    assert str(excinfo.value.__cause__) == "inner"
-
-
 #
 # abstract.h
 #