diff --git a/CHANGELOG.md b/CHANGELOG.md
index d4e1d2f..b01b3cd 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,17 @@
+## Release 5.0.0-pre.20210929.1 (2021-10-07)
+
+```
+Baseline: 61a5fae1b49ed067350d93578da268715031df06
+```
+
+Important changes:
+
+  - The deprecated "relative_to_caller_repository" parameter has been
+    removed from the Label constructor.
+  - The toolchain transition is now enabled for all toolchains.
+
+This release contains contributions from many people at Google, as well as Artem V. Navrotskiy, hvadehra, Ikko Ashimine, Paul Gschwendtner, ron-stripe, Yuval K.
+
 ## Release 5.0.0-pre.20210923.7 (2021-09-30)
 
 ```