diff --git a/Changes b/Changes
index bfd99d50a4..639cab1364 100644
--- a/Changes
+++ b/Changes
@@ -1,4 +1,9 @@
-10.5.x.x (relative to 10.5.4.2)
+10.5.x.x (relative to 10.5.5.0)
+========
+
+
+
+10.5.5.0 (relative to 10.5.4.2)
 ========
 
 Features
@@ -10,6 +15,7 @@ Improvements
 ------------
 
 - USDScene : Added basic loading of UsdGeomNurbsCurves, converting them to CurvesPrimitives.
+- OStreamMessageHandler : Added level prefix to every line.
 
 Fixes
 -----
diff --git a/SConstruct b/SConstruct
index 0c02596f14..755146b23c 100644
--- a/SConstruct
+++ b/SConstruct
@@ -56,8 +56,8 @@ SConsignFile()
 
 ieCoreMilestoneVersion = 10 # for announcing major milestones - may contain all of the below
 ieCoreMajorVersion = 5 # backwards-incompatible changes
-ieCoreMinorVersion = 4 # new backwards-compatible features
-ieCorePatchVersion = 2 # bug fixes
+ieCoreMinorVersion = 5 # new backwards-compatible features
+ieCorePatchVersion = 0 # bug fixes
 ieCoreVersionSuffix = "" # used for alpha/beta releases. Example: "a1", "b2", etc.
 
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