diff --git a/openvdb/CHANGES b/openvdb/CHANGES
index 4109d83f2..2717d3cb1 100644
--- a/openvdb/CHANGES
+++ b/openvdb/CHANGES
@@ -1,7 +1,7 @@
 OpenVDB Version History
 =======================
 
-Version 5.1.0 - In development
+Version 5.1.0 - April 10, 2018
 
     New features:
     - Added an option to points::deleteFromGroups() to delete the groups
diff --git a/openvdb/doc/changes.txt b/openvdb/doc/changes.txt
index c96d919d2..6f7bd396a 100644
--- a/openvdb/doc/changes.txt
+++ b/openvdb/doc/changes.txt
@@ -4,7 +4,7 @@
 
 @htmlonly <a name="v5_1_0_changes"></a>@endhtmlonly
 @par
-<B>Version 5.1.0</B> - <I>In development</I>
+<B>Version 5.1.0</B> - <I>April 10, 2018</I>
 
 @par
 New features:
diff --git a/openvdb/python/test/TestOpenVDB.py b/openvdb/python/test/TestOpenVDB.py
index 63a3e6811..5c29b9f8d 100644
--- a/openvdb/python/test/TestOpenVDB.py
+++ b/openvdb/python/test/TestOpenVDB.py
@@ -36,12 +36,12 @@
 import sys
 import unittest
 try:
-    import pyopenvdb as openvdb
-except ImportError:
     import studioenv
     from studio.ani import Ani
     from studio import logging
     from studio import openvdb
+except ImportError:
+    import pyopenvdb as openvdb
 
 
 def valueFactory(zeroValue, elemValue):