diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 3c9ae23b..d76826c8 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "4.1.1"
+  ".": "4.2.0-alpha01"
 }
\ No newline at end of file
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0b1adaaf..b9d89f11 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,12 @@
 # Changelog
 
+## [4.2.0-alpha01](https://github.com/googleapis/gax-dotnet/compare/Google.Api.Gax-4.1.1...Google.Api.Gax-4.2.0-alpha01) (2022-09-06)
+
+
+### Features
+
+* Add formatting method for routing header values ([f4064f9](https://github.com/googleapis/gax-dotnet/commit/f4064f9e5d2cb94d157445751b20acef5b5f7472))
+
 ## [4.1.1](https://github.com/googleapis/gax-dotnet/compare/Google.Api.Gax-4.1.0...Google.Api.Gax-4.1.1) (2022-09-06)
 
 
diff --git a/ReleaseVersion.xml b/ReleaseVersion.xml
index e01ad17b..c5e15e6a 100644
--- a/ReleaseVersion.xml
+++ b/ReleaseVersion.xml
@@ -5,6 +5,6 @@
     - divergent versions, but for the moment this keeps things simpler.
     -->
   <PropertyGroup>
-    <Version>4.1.1</Version>
+    <Version>4.2.0-alpha01</Version>
   </PropertyGroup>
 </Project>
\ No newline at end of file