diff --git a/.github/release-please/release-please-manifest.json b/.github/release-please/release-please-manifest.json
index bad48adf27..7526075f37 100644
--- a/.github/release-please/release-please-manifest.json
+++ b/.github/release-please/release-please-manifest.json
@@ -3,7 +3,7 @@
   "lib/ocrypto": "0.10.0",
   "lib/flattening": "0.1.3",
   "lib/identifier": "0.3.0",
-  "protocol/go": "0.20.0",
+  "protocol/go": "0.21.0",
   "sdk": "0.15.0",
   "service": "0.13.0"
 }
\ No newline at end of file
diff --git a/protocol/go/CHANGELOG.md b/protocol/go/CHANGELOG.md
index fb4d983b0a..af49f72d2b 100644
--- a/protocol/go/CHANGELOG.md
+++ b/protocol/go/CHANGELOG.md
@@ -1,5 +1,17 @@
 # Changelog
 
+## [0.21.0](https://github.com/opentdf/platform/compare/protocol/go/v0.20.0...protocol/go/v0.21.0) (2026-03-26)
+
+
+### Features
+
+* **policy:** optional namespace for RRs ([#3165](https://github.com/opentdf/platform/issues/3165)) ([8948018](https://github.com/opentdf/platform/commit/89480186006085d2f59ebaeca6be6582db0e67d9))
+
+
+### Bug Fixes
+
+* **deps:** bump google.golang.org/grpc from 1.67.1 to 1.79.3 in /protocol/go ([#3173](https://github.com/opentdf/platform/issues/3173)) ([447ece6](https://github.com/opentdf/platform/commit/447ece6d458ecf88c9ca1149d05cce2552a0f883))
+
 ## [0.20.0](https://github.com/opentdf/platform/compare/protocol/go/v0.19.0...protocol/go/v0.20.0) (2026-03-18)