diff --git a/news/rw_history.rst b/news/rw_history.rst
new file mode 100644
index 0000000..a348487
--- /dev/null
+++ b/news/rw_history.rst
@@ -0,0 +1,23 @@
+**Added:**
+
+* Add method ``GetRwHistory`` on LSQ object to get history of Rw values through one run of ``lsq.Refine()``.
+
+**Changed:**
+
+* <news item>
+
+**Deprecated:**
+
+* <news item>
+
+**Removed:**
+
+* <news item>
+
+**Fixed:**
+
+* <news item>
+
+**Security:**
+
+* <news item>
diff --git a/src/extensions/lsq_ext.cpp b/src/extensions/lsq_ext.cpp
index b63d104..694960f 100644
--- a/src/extensions/lsq_ext.cpp
+++ b/src/extensions/lsq_ext.cpp
@@ -45,6 +45,15 @@ bool _SafeRefine(LSQNumObj & lsq, REAL maxChi2factor, int nbCycle, bool useLeven
                           callBeginEndOptimization, minChi2var);
 }
 
+bp::list _GetRwHistory(const LSQNumObj & lsq)
+{
+    bp::list out;
+    const std::vector<REAL> & h = lsq.GetRwHistory();
+    for (std::vector<REAL>::const_iterator it = h.begin(); it != h.end(); ++it)
+        out.append(*it);
+    return out;
+}
+
 }   // namespace
 
 void wrap_lsq()
@@ -81,6 +90,7 @@ void wrap_lsq()
                  bp::arg("minChi2var")=0.01))
         .def("Rfactor", &LSQNumObj::Rfactor)
         .def("RwFactor", &LSQNumObj::RwFactor)
+        .def("GetRwHistory", &_GetRwHistory)
         .def("ChiSquare", &LSQNumObj::ChiSquare)
         .def("SetRefinedObj", &LSQNumObj::SetRefinedObj,
                 (bp::arg("obj"), bp::arg("LSQFuncIndex")=0,