diff --git a/doc/whats-new.rst b/doc/whats-new.rst
index fbe7fc5edca..9a12f07a914 100644
--- a/doc/whats-new.rst
+++ b/doc/whats-new.rst
@@ -28,8 +28,8 @@ What's New
 
 .. _whats-new.0.10.4:
 
-v0.10.4 (unreleased)
---------------------
+v0.10.4 (May 16, 2018)
+----------------------
 
 The minor release includes a number of bug-fixes and backwards compatible
 enhancements. A highlight is ``CFTimeIndex``, which offers support for
diff --git a/setup.py b/setup.py
index c7c02c90e2f..c5e2ba831b7 100644
--- a/setup.py
+++ b/setup.py
@@ -8,8 +8,8 @@
 
 MAJOR = 0
 MINOR = 10
-MICRO = 3
-ISRELEASED = False
+MICRO = 4
+ISRELEASED = True
 VERSION = '%d.%d.%d' % (MAJOR, MINOR, MICRO)
 QUALIFIER = ''