diff --git a/README.md b/README.md
index fb41df0..a6a8ee9 100644
--- a/README.md
+++ b/README.md
@@ -77,7 +77,7 @@ Requirements
 
 Optional requirements:
 
-* ``dill``, **>=0.3.5.1**
+* ``dill``, **>=0.3.6**
 
 
 More Information
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 886ba42..b47f140 100755
--- a/setup.py
+++ b/setup.py
@@ -84,7 +84,7 @@ def has_ext_modules(foo):
         return True
 
 # define dependencies
-dill_version = 'dill>=0.3.5.1'
+dill_version = 'dill>=0.3.6'
 # add dependencies
 depend = []
 extras = {'dill': [dill_version]}
diff --git a/version.py b/version.py
index f931ce9..bb51737 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/ppft/blob/master/LICENSE
 
-__version__ = '1.7.6.6.dev0'
+__version__ = '1.7.6.6'
 __author__ = 'Mike McKerns'
 __contact__ = 'mmckerns@uqfoundation.org'