diff --git a/README.md b/README.md
index 85e8880..12f3f94 100644
--- a/README.md
+++ b/README.md
@@ -41,7 +41,7 @@ usage: blurgenerator [-h] [--input INPUT] [--input_depth_map INPUT_DEPTH_MAP] [-
   --motion_blur_angle MOTION_BLUR_ANGLE
                         Angle for motion blur. Default is 30.
   --lens_radius LENS_RADIUS
-                        Radius for lens blur. Default is 5.
+                        Radius for lens blur. Default is 5.0.
   --lens_components LENS_COMPONENTS
                         Components for lens blur. Default is 4.
   --lens_exposure_gamma LENS_EXPOSURE_GAMMA
diff --git a/setup.py b/setup.py
index 4f3c7db..1fd417a 100644
--- a/setup.py
+++ b/setup.py
@@ -29,7 +29,6 @@
         'Topic :: Software Development :: Build Tools',
 
         'Programming Language :: Python :: 3',
-        'Programming Language :: Python :: 3.6',
         'Programming Language :: Python :: 3.7',
         'Programming Language :: Python :: 3.8',
         'Programming Language :: Python :: 3.9',
@@ -39,7 +38,7 @@
         'License :: OSI Approved :: MIT License',
         'Operating System :: OS Independent',
     ],
-    python_requires='>=3.6',
+    python_requires='>=3.7',
     install_requires=['opencv-python'],
     extras_require={
         'dev': ['check-manifest'],
diff --git a/tox.ini b/tox.ini
index 8752e9e..1c596d1 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,5 +1,5 @@
 [tox]
-envlist = py{36, 37, 38, 39, 310, 311}
+envlist = py{37, 38, 39, 310, 311, 312}
 minversion = 3.28.0
 isolated_build = true