diff --git a/CHANGES.md b/CHANGES.md
index 2d3d3071383..a310e7c87ee 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -1,5 +1,12 @@
 # Changes
 
+## [0.121.0](https://github.com/googleapis/google-api-go-client/compare/v0.120.0...v0.121.0) (2023-05-01)
+
+
+### Features
+
+* **all:** Auto-regenerate discovery clients ([#1961](https://github.com/googleapis/google-api-go-client/issues/1961)) ([2068ba5](https://github.com/googleapis/google-api-go-client/commit/2068ba54f4826f8b5d28839e94c4bbf661e3da4e))
+
 ## [0.120.0](https://github.com/googleapis/google-api-go-client/compare/v0.119.0...v0.120.0) (2023-04-25)
 
 
diff --git a/internal/version.go b/internal/version.go
index b791d2304e6..007ed02df51 100644
--- a/internal/version.go
+++ b/internal/version.go
@@ -5,4 +5,4 @@
 package internal
 
 // Version is the current tagged release of the library.
-const Version = "0.120.0"
+const Version = "0.121.0"