diff --git a/CMakeLists.txt b/CMakeLists.txt
index 1e8339bc..46c78312 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -23,7 +23,7 @@ include(CTest)
 set(OSTAP_VERSION_MAJOR 1)
 set(OSTAP_VERSION_MINOR 10)
 set(OSTAP_VERSION_PATCH 0)
-set(OSTAP_VERSION_TWEAK 4)
+set(OSTAP_VERSION_TWEAK 6)
 
 set(OSTAP_VERSION ${OSTAP_VERSION_MAJOR}.${OSTAP_VERSION_MINOR}.${OSTAP_VERSION_PATCH}.${OSTAP_VERSION_TWEAK})
 
diff --git a/ReleaseNotes/release_notes.md b/ReleaseNotes/release_notes.md
index a17904b1..9381083e 100644
--- a/ReleaseNotes/release_notes.md
+++ b/ReleaseNotes/release_notes.md
@@ -1,3 +1,5 @@
+# v1.10.0.6
+
 ## New features:
 
   1. add `more_vars`argument to `ostap.fitting.ds2numpy.ds2numpy` function
@@ -6,6 +8,7 @@
 
 ## Bug fixes:
 
+  1. fix old bug in `_rf_new_close_`
 
 # v1.10.0.4
 
diff --git a/ReleaseNotes/v1.10.0.4.md b/ReleaseNotes/v1.10.0.4.md
deleted file mode 100644
index 23a9fb4c..00000000
--- a/ReleaseNotes/v1.10.0.4.md
+++ /dev/null
@@ -1,28 +0,0 @@
-# v1.10.0.4
-
-## New features:
-
-  1. Update `histo_compare` tests 
-  1. Slight optimisation in `Ostap::Math::ChebyshedSum`
-  1. Further optimisation in `Ostap::Math::ChebyshedSum`
-  1. add new test `ostap/math/tests/test_math.poly.py`
-  1. Reduce usage of `Ostap::Utils::Iterator`
-  1. add test  for `ostap.stats.ustat` module 
-  1. Add `Ostap::Math::two_samples` function 
-  1. Add the first version of code for RooDataSety -> numpy conversion by Artem Egorychev 
-  1. Improve `ds2numpy` code and test
-  1. small fixes for `ostap.utuls.split_ranges`
-  1. add conversion to int for `RooAbsCategory` 
-  1. add iterator/contains/len functions for `RooAbsDataStore`
-  1. add some simple utilities for goodness-of-fit studies `ostap.stats.gof` 
-  1. simplify `Ostap::Utils:::getWeight` for 6.26<=ROOT  
-  
-## Backward incompatible: 
-
-  1. change the interface for functions from the `ostap.stats.ustat` module 
-  1. change the interface for the `Ostap::UStat`  class 
-
-## Bug fixes:
-
-  1. fix a newly introduced bug in `ostap.utils.utils.split_range`
-`
diff --git a/ReleaseNotes/v1.10.0.6.md b/ReleaseNotes/v1.10.0.6.md
new file mode 100644
index 00000000..38c306f8
--- /dev/null
+++ b/ReleaseNotes/v1.10.0.6.md
@@ -0,0 +1,11 @@
+# v1.10.0.6
+
+## New features:
+
+  1. add `more_vars`argument to `ostap.fitting.ds2numpy.ds2numpy` function
+`
+## Backward incompatible: 
+
+## Bug fixes:
+
+  1. fix old bug in `_rf_new_close_`