diff --git a/src/pyunit/pyunit.cpp b/src/pyunit/pyunit.cpp
index 9384e308..41b38077 100644
--- a/src/pyunit/pyunit.cpp
+++ b/src/pyunit/pyunit.cpp
@@ -63,6 +63,23 @@ namespace xo {
                          {
                              return x * y;
                          })
+
+                .def("__truediv__",
+                     [](const XoQuantity & x, const XoQuantity & y)
+                         {
+                             return x / y;
+                         })
+                .def("__truediv__",
+                     [](const XoQuantity & x, double y)
+                         {
+                             return x / y;
+                         })
+                .def("__rtruediv__",
+                     [](const XoQuantity & y, double x)
+                         {
+                             return x / y;
+                         })
+
                 .def("__repr__",
                      [](const XoQuantity & x)
                          {