diff --git a/docs/changelog.rst b/docs/changelog.rst
index 34904e2..efccc69 100644
--- a/docs/changelog.rst
+++ b/docs/changelog.rst
@@ -5,6 +5,12 @@ _
 ---------
 
 
+1.0.0
+~~~~~
+
+* Compatibility updates for ``tornado>=4.0.0``
+
+
 v0.41
 ~~~~~
 
diff --git a/tornado_json/__init__.py b/tornado_json/__init__.py
index d2fbe28..1004db2 100644
--- a/tornado_json/__init__.py
+++ b/tornado_json/__init__.py
@@ -5,4 +5,4 @@
 # Alternatively, just put the version in a text file or something to avoid
 #   this.
 
-__version__ = '0.41'
+__version__ = '1.0.0'