diff --git a/python-mtheall/CarState.cpp b/python-mtheall/CarState.cpp
index 52041c3..bfb0326 100644
--- a/python-mtheall/CarState.cpp
+++ b/python-mtheall/CarState.cpp
@@ -3,11 +3,22 @@
 #include <algorithm>
 #include <cstddef>
 #include <cstring>
+#include <mutex>
 
 namespace RocketSim::Python
 {
 constexpr unsigned NUM_WHEELS = std::extent_v<decltype (RocketSim::CarState::wheelsWithContact)>;
 
+std::once_flag lastRelDodgeTorqueWarnOnce;
+
+void warnLastRelDodgeTorque ()
+{
+	std::call_once (lastRelDodgeTorqueWarnOnce,
+	    &std::fprintf,
+	    stderr,
+	    "last_rel_dodge_torque is a deprecated alias of flip_rel_torque\n");
+}
+
 PyTypeObject *CarState::Type = nullptr;
 
 PyMemberDef CarState::Members[] = {
@@ -167,6 +178,7 @@ PyGetSetDef CarState::GetSet[] = {
     GETSET_ENTRY (CarState, rot_mat, "Rotation matrix"),
     GETSET_ENTRY (CarState, vel, "Velocity"),
     GETSET_ENTRY (CarState, ang_vel, "Angular velocity"),
+    GETSET_ENTRY (CarState, last_rel_dodge_torque, "Deprecated alias of flip_rel_torque"),
     GETSET_ENTRY (CarState, flip_rel_torque, "Flip relative torque"),
     GETSET_ENTRY (CarState, last_controls, "Last controls"),
     GETSET_ENTRY (CarState, world_contact_normal, "World contact normal"),
@@ -336,6 +348,7 @@ int CarState::Init (CarState *self_, PyObject *args_, PyObject *kwds_) noexcept
 	static char ballHitInfoKwd[]             = "ball_hit_info";
 	static char lastControlsKwd[]            = "last_controls";
 	static char updateCounterKwd[]           = "update_counter";
+	static char lastRelDodgeTorqueKwd[]      = "last_rel_dodge_torque";
 
 	static char *dict[] = {posKwd,
 	    rotMatKwd,
@@ -369,6 +382,7 @@ int CarState::Init (CarState *self_, PyObject *args_, PyObject *kwds_) noexcept
 	    ballHitInfoKwd,
 	    lastControlsKwd,
 	    updateCounterKwd,
+	    lastRelDodgeTorqueKwd,
 	    nullptr};
 
 	RocketSim::CarState state{};
@@ -382,6 +396,7 @@ int CarState::Init (CarState *self_, PyObject *args_, PyObject *kwds_) noexcept
 	PyObject *lastControls       = nullptr;
 	PyObject *worldContactNormal = nullptr;
 	PyObject *ballHitInfo        = nullptr;
+	PyObject *lastRelDodgeTorque = nullptr;
 
 	int isOnGround      = state.isOnGround;
 	int hasJumped       = state.hasJumped;
@@ -398,7 +413,7 @@ int CarState::Init (CarState *self_, PyObject *args_, PyObject *kwds_) noexcept
 	unsigned long long updateCounter = state.updateCounter;
 	if (!PyArg_ParseTupleAndKeywords (args_,
 	        kwds_,
-	        "|O!O!O!O!pOpppO!ffppffffpffpfpO!kfpfO!O!K",
+	        "|O!O!O!O!pOpppO!ffppffffpffpfpO!kfpfO!O!K$O!",
 	        dict,
 	        Vec::Type,
 	        &pos,
@@ -439,7 +454,9 @@ int CarState::Init (CarState *self_, PyObject *args_, PyObject *kwds_) noexcept
 	        &ballHitInfo,
 	        CarControls::Type,
 	        &lastControls,
-	        &updateCounter))
+	        &updateCounter,
+	        Vec::Type,
+	        &lastRelDodgeTorque))
 		return -1;
 
 	if (pos)
@@ -465,6 +482,8 @@ int CarState::Init (CarState *self_, PyObject *args_, PyObject *kwds_) noexcept
 
 	if (flipRelTorque)
 		state.flipRelTorque = Vec::ToVec (PyCast<Vec> (flipRelTorque));
+	else if (lastRelDodgeTorque)
+		state.flipRelTorque = Vec::ToVec (PyCast<Vec> (lastRelDodgeTorque));
 
 	if (worldContactNormal)
 		state.worldContact.contactNormal = Vec::ToVec (PyCast<Vec> (worldContactNormal));
@@ -848,6 +867,18 @@ int CarState::Setang_vel (CarState *self_, PyObject *value_, void *) noexcept
 	return 0;
 }
 
+PyObject *CarState::Getlast_rel_dodge_torque (CarState *self_, void *closure_) noexcept
+{
+	warnLastRelDodgeTorque ();
+	return Getflip_rel_torque (self_, closure_);
+}
+
+int CarState::Setlast_rel_dodge_torque (CarState *self_, PyObject *value_, void *closure_) noexcept
+{
+	warnLastRelDodgeTorque ();
+	return Setflip_rel_torque (self_, value_, closure_);
+}
+
 PyObject *CarState::Getflip_rel_torque (CarState *self_, void *) noexcept
 {
 	return PyRef<Vec>::incRef (self_->flipRelTorque).giftObject ();
diff --git a/python-mtheall/Makefile b/python-mtheall/Makefile
index 3d7615c..11eccf5 100644
--- a/python-mtheall/Makefile
+++ b/python-mtheall/Makefile
@@ -11,7 +11,7 @@ wheel: build
 	$(PYTHON) ../setup.py bdist_wheel --py-limited-api=cp34
 
 install: wheel
-	$(PYTHON) -m pip install --force-reinstall --user ./dist/RocketSim-2.1.0a5-cp34-abi3-linux_x86_64.whl
+	$(PYTHON) -m pip install --force-reinstall --user ./dist/RocketSim-2.1.0a6-cp34-abi3-linux_x86_64.whl
 
 clean:
 	$(RM) -r build/ dist/ RocketSim.egg-info/
diff --git a/python-mtheall/Module.h b/python-mtheall/Module.h
index 5b40114..0bc7d62 100644
--- a/python-mtheall/Module.h
+++ b/python-mtheall/Module.h
@@ -565,6 +565,7 @@ struct CarState
 	GETSET_DECLARE (CarState, rot_mat)
 	GETSET_DECLARE (CarState, vel)
 	GETSET_DECLARE (CarState, ang_vel)
+	GETSET_DECLARE (CarState, last_rel_dodge_torque)
 	GETSET_DECLARE (CarState, flip_rel_torque)
 	GETSET_DECLARE (CarState, last_controls)
 	GETSET_DECLARE (CarState, world_contact_normal)
diff --git a/setup.py b/setup.py
index a5ed3ca..aaee2e8 100755
--- a/setup.py
+++ b/setup.py
@@ -88,7 +88,7 @@ def build_extension(self, ext):
 
 setup(
   name = "RocketSim",
-  version = "2.1.0a5",
+  version = "2.1.0a6",
   description = "This is Rocket League!",
   cmdclass = {"build_ext": build_ext_ex},
   ext_modules = [RocketSim],