diff --git a/CHANGELOG b/CHANGELOG
index 20f10ff..e9f8abf 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,6 +1,11 @@
 CHANGELOG
 =========
 
+1.0.4 - 2018-11-15
+
+* #225 MemorySource fix to support custom objects
+* #212 More consistency in Observable extensions behavior/error messages
+
 1.0.3 - 2018-10-31
 
 * #187 Pickle proof objects
diff --git a/docs/conf.py b/docs/conf.py
index fb3efe3..572fc5a 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -34,8 +34,8 @@ project = 'stix2'
 copyright = '2017, OASIS Open'
 author = 'OASIS Open'
 
-version = '1.0.3'
-release = '1.0.3'
+version = '1.0.4'
+release = '1.0.4'
 
 language = None
 exclude_patterns = ['_build', '_templates', 'Thumbs.db', '.DS_Store', 'guide/.ipynb_checkpoints']
diff --git a/setup.cfg b/setup.cfg
index 97f5047..2859375 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -1,5 +1,5 @@
 [bumpversion]
-current_version = 1.0.3
+current_version = 1.0.4
 commit = True
 tag = True
 
@@ -12,3 +12,4 @@ license_file = LICENSE
 
 [bdist_wheel]
 universal = 1
+
diff --git a/stix2/version.py b/stix2/version.py
index 976498a..92192ee 100644
--- a/stix2/version.py
+++ b/stix2/version.py
@@ -1 +1 @@
-__version__ = "1.0.3"
+__version__ = "1.0.4"