diff --git a/browser/config/version.txt b/browser/config/version.txt
index 31ce05cc5..b1277fae2 100644
--- a/browser/config/version.txt
+++ b/browser/config/version.txt
@@ -1 +1 @@
-45.20.0
+45.21.0
diff --git a/browser/config/version_display.txt b/browser/config/version_display.txt
index 101d6ed5d..20bd91300 100644
--- a/browser/config/version_display.txt
+++ b/browser/config/version_display.txt
@@ -1 +1 @@
-Feature Parity Release 11
+Feature Parity Release 12
diff --git a/config/milestone.txt b/config/milestone.txt
index 463ce401e..7308ad035 100644
--- a/config/milestone.txt
+++ b/config/milestone.txt
@@ -10,4 +10,4 @@
 # hardcoded milestones in the tree from these two files.
 #--------------------------------------------------------
 
-45.20.0
+45.21.0