diff --git a/Makefile b/Makefile
index eeea8de..394cf4d 100644
--- a/Makefile
+++ b/Makefile
@@ -55,16 +55,16 @@ coverage: ## check code coverage quickly with the default Python
 
 docs: install ## generate docs		
 	pip install black pdoc 
-	black nnetsauce/* --line-length=80	
-	find nnetsauce/ -name "*.py" -exec autopep8 --max-line-length=80 --in-place {} +
-	pdoc -t docs nnetsauce/* --output-dir nnetsauce-docs
+	black unifiedbooster/* --line-length=80	
+	find unifiedbooster/ -name "*.py" -exec autopep8 --max-line-length=80 --in-place {} +
+	pdoc -t docs unifiedbooster/* --output-dir unifiedbooster-docs
 	find . -name '__pycache__' -exec rm -fr {} +
 
 servedocs: install ## compile the docs watching for change	 	
 	pip install black pdoc 
-	black nnetsauce/* --line-length=80	
-	find nnetsauce/ -name "*.py" -exec autopep8 --max-line-length=80 --in-place {} +
-	pdoc -t docs nnetsauce/* 
+	black unifiedbooster/* --line-length=80	
+	find unifiedbooster/ -name "*.py" -exec autopep8 --max-line-length=80 --in-place {} +
+	pdoc -t docs unifiedbooster/* 
 	find . -name '__pycache__' -exec rm -fr {} +
 
 build-site: docs ## export mkdocs website to a folder		
diff --git a/setup.py b/setup.py
index 86172d1..58559f9 100644
--- a/setup.py
+++ b/setup.py
@@ -10,7 +10,7 @@
 
 subprocess.check_call(['pip', 'install', 'Cython'])
 
-__version__ = "0.2.0"
+__version__ = "0.2.1"
 
 here = path.abspath(path.dirname(__file__))
 
diff --git a/unifiedbooster/gbdt.py b/unifiedbooster/gbdt.py
index 9003ff6..c2c7d0e 100644
--- a/unifiedbooster/gbdt.py
+++ b/unifiedbooster/gbdt.py
@@ -55,6 +55,7 @@ def __init__(self,
                 'depth': self.max_depth, 
                 'verbose': self.verbose,
                 'random_seed': self.seed, 
+                'bootstrap_type': 'Bernoulli',
                 **kwargs
             }