diff --git a/ChangeLog b/ChangeLog
index 3effe1a426..7d00fb70f6 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,13 @@
+2013-07-26: Version 3.20.9
+
+        Check that ExternalString objects get aligned resources.
+
+        Fixed JSArray-specific length lookup in polymorphic array handling
+        (Chromium issues 263276, 263905).
+
+        Performance and stability improvements on all platforms.
+
+
 2013-07-24: Version 3.20.8
 
         Deprecated v8::V8::Pause/ResumeProfiler.
diff --git a/src/version.cc b/src/version.cc
index cfbb9c96f4..e2c6dfb6f2 100644
--- a/src/version.cc
+++ b/src/version.cc
@@ -34,7 +34,7 @@
 // system so their names cannot be changed without changing the scripts.
 #define MAJOR_VERSION     3
 #define MINOR_VERSION     20
-#define BUILD_NUMBER      9
+#define BUILD_NUMBER      10
 #define PATCH_LEVEL       0
 // Use 1 for candidates and 0 otherwise.
 // (Boolean macro values are not supported by all preprocessors.)