diff --git a/PackageInfo.g b/PackageInfo.g
index 904a5fb..566d21b 100644
--- a/PackageInfo.g
+++ b/PackageInfo.g
@@ -9,8 +9,8 @@ SetPackageInfo( rec(
 
 PackageName := "BacktrackKit",
 Subtitle := "An extensible, easy to understand backtracking framework",
-Version := "0.6.0",
-Date := "03/12/2021", # dd/mm/yyyy format
+Version := "0.6.1",
+Date := "21/12/2021", # dd/mm/yyyy format
 
 
 Persons := [
diff --git a/README.md b/README.md
index 31ccdf8..1abb011 100644
--- a/README.md
+++ b/README.md
@@ -27,6 +27,14 @@ at https://github.com/peal/BacktrackKit/issues
 
 ## History
 
+
+0.6.1
+-----
+
+* Rename `BTKit_Con` to `BTKit_Refiner`.
+* Add constraints documentation from Vole
+* Add `ProcessConstraints` and `BTKit_RefinerFromConstraint`
+
 0.6.0
 -----
 
diff --git a/gap/refiner.gi b/gap/refiner.gi
index 92a5896..3d13948 100644
--- a/gap/refiner.gi
+++ b/gap/refiner.gi
@@ -36,7 +36,7 @@ InstallMethod(DummyRefiner,
     )
 );
 
-BTKit_ConstraintToRefiner := function(con)
+BTKit_RefinerFromConstraint := function(con)
     local action, source, result;
 
     if HasIsEmptyConstraint(con) and IsEmptyConstraint(con) then