chore: release main (#5933)

diff --git a/.release-please-manifest-submodules.json b/.release-please-manifest-submodules.json
index f52555d..9c03127 100644
--- a/.release-please-manifest-submodules.json
+++ b/.release-please-manifest-submodules.json
@@ -14,7 +14,7 @@
   "billing": "1.2.0",
   "binaryauthorization": "0.4.0",
   "certificatemanager": "0.2.0",
-  "channel": "1.5.0",
+  "channel": "1.6.0",
   "cloudbuild": "1.2.0",
   "clouddms": "1.2.0",
   "cloudtasks": "1.3.0",
diff --git a/channel/CHANGES.md b/channel/CHANGES.md
index 4e79c7f..6457356 100644
--- a/channel/CHANGES.md
+++ b/channel/CHANGES.md
@@ -1,5 +1,13 @@
 # Changes
 
+## [1.6.0](https://github.com/googleapis/google-cloud-go/compare/channel/v1.5.0...channel/v1.6.0) (2022-04-26)
+
+
+### Features
+
+* **channel:** Add API definitions for Cloud Channel Repricing APIs ([2fe50f7](https://github.com/googleapis/google-cloud-go/commit/2fe50f79275d295ba71a14a247bd85de7d540897))
+* **channel:** Add new enum value, new filter in ListCustomersRequest of Cloud Channel API ([7b1173d](https://github.com/googleapis/google-cloud-go/commit/7b1173d1ffed195c515b907b20dd1f86a9eef13a))
+
 ## [1.5.0](https://github.com/googleapis/google-cloud-go/compare/channel/v1.4.1...channel/v1.5.0) (2022-02-23)
 
 
diff --git a/channel/internal/version.go b/channel/internal/version.go
index e93235c..05d3396 100644
--- a/channel/internal/version.go
+++ b/channel/internal/version.go
@@ -15,4 +15,4 @@
 package internal
 
 // Version is the current tagged release of the library.
-const Version = "1.5.0"
+const Version = "1.6.0"