diff --git a/cmtj/__init__.pyi b/cmtj/__init__.pyi
index 4d4312a..6be0f2d 100644
--- a/cmtj/__init__.pyi
+++ b/cmtj/__init__.pyi
@@ -479,6 +479,19 @@ class Layer:
         """
         ...
 
+    def createBufferedAlphaNoise(self, bufferSize: int) -> None:
+        """Create a buffered alpha noise generator."""
+        ...
+
+    def setAlphaNoise(self, alpha: float, std: float, scale: float, axis: Axis = Axis.all) -> None:
+        """Set alpha noise for the layer.
+        :param alpha: Alpha parameter
+        :param std: Standard deviation
+        :param scale: Scale
+        :param axis: Axis, by default all axes are used
+        """
+        ...
+
     def setAnisotropyDriver(self, driver: ScalarDriver) -> None:
         """Set anisotropy driver for the layer.
         It's scalar. The axis is determined in the layer constructor"""
diff --git a/cmtj/noise/__init__.pyi b/cmtj/noise/__init__.pyi
index 596e85f..0ebc17e 100644
--- a/cmtj/noise/__init__.pyi
+++ b/cmtj/noise/__init__.pyi
@@ -7,10 +7,10 @@ class BufferedAlphaNoise:
     def fillBuffer(self) -> None:
         """Fill the buffer with the noise. This method is called only once."""
         ...
+
     def tick(self) -> float:
         """Produce the next sample of the noise."""
         ...
-    pass
 
 class VectorAlphaNoise:
     """Create a vector alpha noise generator. Alpha can be in [0, 2]."""
@@ -22,15 +22,26 @@ class VectorAlphaNoise:
         std: float,
         scale: float,
         axis: cmtj.Axis = cmtj.Axis.all,
-    ) -> None: ...
+    ) -> None:
+        """Kasdin algorithm for vector alpha noise generation.
+
+        :param bufferSize: Buffer size
+        :param alpha: Alpha parameter
+        :param std: Standard deviation
+        :param scale: Scale
+        :param axis: Axis, by default all axes are used
+        """
+        ...
+
     def getPrevSample(self) -> cmtj.CVector:
         """Get the previous sample of the noise in a vector form."""
         ...
+
     def getScale(self) -> float:
         """Get the scale of the noise."""
         ...
+
     def tick(self) -> float: ...
     def tickVector(self) -> cmtj.CVector:
         """Get the next sample of the noise in a vector form."""
         ...
-    pass
diff --git a/setup.py b/setup.py
index 58e7dc2..a65bb01 100644
--- a/setup.py
+++ b/setup.py
@@ -6,7 +6,7 @@
 from setuptools import Extension, find_namespace_packages, setup
 from setuptools.command.build_ext import build_ext
 
-__version__ = "1.6.0"
+__version__ = "1.6.1"
 """
 As per
 https://github.com/pybind/python_example