Updating CHANGELOG for 0.20.0 release.
diff --git a/CHANGELOG b/CHANGELOG
index 40b0096..7cece48 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,3 +1,25 @@
+Aurora 0.20.0
+--------------------------------------------------------------------------------
+## Bug
+ * [AURORA-1963] - Structdump endpoint shows thrift metadata
+ * [AURORA-1965] - LaunchException needs transient task timeout for reschedule
+ * [AURORA-1956] - test_du_diskcollector fails on macOS
+ * [AURORA-1233] - primary_port warning does not appear to respect portmap
+ * [AURORA-1959] - Missing Ops prevent upgrade from 0.19 to master
+
+## Story
+ * [AURORA-1380] - Upgrade to guice 4.0
+ * [AURORA-1249] - Upgrade 3rdparty python dependencies
+ * [AURORA-1412] - Conflicting `slow_query_log_threshold` arguments for aurora-scheduler
+ * [AURORA-1471] - Reconsider use of shiro-guice
+
+## Task
+ * [AURORA-1964] - Move Vagrant setup from Trusty to Xenial
+ * [AURORA-1901] - Expose thrift workload stats on pruneTasks() invocations
+ * [AURORA-1707] - Remove deprecated resource fields in TaskConfig and ResourceAggregate
+ * [AURORA-1974] - Update sample Docker jobs for Vagrant tutorial
+
+
Aurora 0.19.0
--------------------------------------------------------------------------------
## Bug
