diff --git a/README.md b/README.md
index 3968377..9563114 100644
--- a/README.md
+++ b/README.md
@@ -110,14 +110,14 @@ Requirements
 * ``numpy``, **>=1.0**
 * ``sympy``, **>=0.6.7**
 * ``mpmath``, **>=0.19**
-* ``dill``, **>=0.3.5.1**
-* ``klepto``, **>=0.2.2**
+* ``dill``, **>=0.3.6**
+* ``klepto``, **>=0.2.3**
 
 Optional requirements:
 
 * ``matplotlib``, **>=0.91**
 * ``scipy``, **>=0.6.0**
-* ``pathos``, **>=0.2.9**
+* ``pathos``, **>=0.3.0**
 * ``pyina``, **>=0.2.6**
 
 
diff --git a/setup.cfg b/setup.cfg
index 8c8d4a6..8a144c2 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -1,5 +1,5 @@
 [egg_info]
-tag_build = .dev0
+#tag_build = .dev0
 
 [bdist_wheel]
 #python-tag = py3
diff --git a/setup.py b/setup.py
index a0a072d..79a4b20 100644
--- a/setup.py
+++ b/setup.py
@@ -92,9 +92,9 @@ def has_ext_modules(foo):
         return True
 
 # define dependencies
-dill_version = 'dill>=0.3.5.1'
-klepto_version = 'klepto>=0.2.2'
-pathos_version = 'pathos>=0.2.9'
+dill_version = 'dill>=0.3.6'
+klepto_version = 'klepto>=0.2.3'
+pathos_version = 'pathos>=0.3.0'
 pyina_version = 'pyina>=0.2.6'
 cython_version = 'cython>=0.29.30' #XXX: required to build numpy from source
 numpy_version = 'numpy>=1.0'
diff --git a/version.py b/version.py
index 4c40098..fd6d5ba 100644
--- a/version.py
+++ b/version.py
@@ -5,7 +5,7 @@
 # License: 3-clause BSD.  The full license text is available at:
 #  - https://github.com/uqfoundation/mystic/blob/master/LICENSE
 
-__version__ = '0.4.0.dev0'
+__version__ = '0.4.0'
 __author__ = 'Mike McKerns'
 __contact__ = 'mmckerns@uqfoundation.org'