diff --git a/bin/internal/engine.version b/bin/internal/engine.version
index 6122ba4..5543adf 100644
--- a/bin/internal/engine.version
+++ b/bin/internal/engine.version
@@ -1 +1 @@
-40018811ec0e364fc7f52e9d29a157f9df5778f3
+0d4f78c952552819753a2676b318e181004ba746
diff --git a/bin/internal/release-candidate-branch.version b/bin/internal/release-candidate-branch.version
new file mode 100644
index 0000000..139ba2d
--- /dev/null
+++ b/bin/internal/release-candidate-branch.version
@@ -0,0 +1 @@
+flutter-3.21-candidate.0