diff --git a/WATCHLISTS b/WATCHLISTS
index 4fe266f..54d6bbe 100644
--- a/WATCHLISTS
+++ b/WATCHLISTS
@@ -117,7 +117,7 @@
     ],
     'merges': [
       # Only enabled on branches created with tools/release/create_release.py
-      # 'v8-merges@googlegroups.com',
+      'v8-merges@googlegroups.com',
     ],
     'wasm': [
       'wasm-v8@google.com',
diff --git a/include/v8-version.h b/include/v8-version.h
index 9c75a2c..b3953ad6 100644
--- a/include/v8-version.h
+++ b/include/v8-version.h
@@ -10,11 +10,11 @@
 // system so their names cannot be changed without changing the scripts.
 #define V8_MAJOR_VERSION 8
 #define V8_MINOR_VERSION 6
-#define V8_BUILD_NUMBER 0
+#define V8_BUILD_NUMBER 21
 #define V8_PATCH_LEVEL 0
 
 // Use 1 for candidates and 0 otherwise.
 // (Boolean macro values are not supported by all preprocessors.)
-#define V8_IS_CANDIDATE_VERSION 1
+#define V8_IS_CANDIDATE_VERSION 0
 
 #endif  // V8_INCLUDE_VERSION_H_