diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 6b992073547..51102ba9694 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,5 +1,5 @@
 {
-  ".": "0.6.5",
-  "circuits/cpp/barretenberg": "0.6.5",
-  "circuits/cpp/barretenberg/ts": "0.6.5"
+  ".": "0.6.6",
+  "circuits/cpp/barretenberg": "0.6.6",
+  "circuits/cpp/barretenberg/ts": "0.6.6"
 }
diff --git a/CHANGELOG.md b/CHANGELOG.md
index d62e483f6e5..9a1c4a5b52c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,17 @@
 # Changelog
 
+## [0.6.6](https://github.com/AztecProtocol/aztec-packages/compare/aztec-packages-v0.6.5...aztec-packages-v0.6.6) (2023-09-11)
+
+
+### Features
+
+* **noir:** Introduce context union to simplify storage declarations ([#2143](https://github.com/AztecProtocol/aztec-packages/issues/2143)) ([2288e44](https://github.com/AztecProtocol/aztec-packages/commit/2288e44a5b817076c9d51db5f99905deeeffc418)), closes [#2012](https://github.com/AztecProtocol/aztec-packages/issues/2012)
+
+
+### Bug Fixes
+
+* **test:** Fix regex in canary test ([#2165](https://github.com/AztecProtocol/aztec-packages/issues/2165)) ([e5f50df](https://github.com/AztecProtocol/aztec-packages/commit/e5f50df55e68f6c94b602fc16b33abbcea15674e))
+
 ## [0.6.5](https://github.com/AztecProtocol/aztec-packages/compare/aztec-packages-v0.6.4...aztec-packages-v0.6.5) (2023-09-08)
 
 
diff --git a/VERSION b/VERSION
index 7c36cc52a83..fe152d6af84 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-v0.6.5 x-release-please-version
+v0.6.6 x-release-please-version
diff --git a/circuits/cpp/barretenberg/CHANGELOG.md b/circuits/cpp/barretenberg/CHANGELOG.md
index ba8800267d5..412af9b65a9 100644
--- a/circuits/cpp/barretenberg/CHANGELOG.md
+++ b/circuits/cpp/barretenberg/CHANGELOG.md
@@ -1,5 +1,12 @@
 # Changelog
 
+## [0.6.6](https://github.com/AztecProtocol/aztec-packages/compare/barretenberg-v0.6.5...barretenberg-v0.6.6) (2023-09-11)
+
+
+### Miscellaneous
+
+* **barretenberg:** Synchronize aztec-packages versions
+
 ## [0.6.5](https://github.com/AztecProtocol/aztec-packages/compare/barretenberg-v0.6.4...barretenberg-v0.6.5) (2023-09-08)
 
 
diff --git a/circuits/cpp/barretenberg/VERSION b/circuits/cpp/barretenberg/VERSION
index 7c36cc52a83..fe152d6af84 100644
--- a/circuits/cpp/barretenberg/VERSION
+++ b/circuits/cpp/barretenberg/VERSION
@@ -1 +1 @@
-v0.6.5 x-release-please-version
+v0.6.6 x-release-please-version
diff --git a/circuits/cpp/barretenberg/barretenberg-wasm.nix b/circuits/cpp/barretenberg/barretenberg-wasm.nix
index 827ab34a450..7ebdaec86e9 100644
--- a/circuits/cpp/barretenberg/barretenberg-wasm.nix
+++ b/circuits/cpp/barretenberg/barretenberg-wasm.nix
@@ -6,7 +6,7 @@ in
 stdenv.mkDerivation
 {
   pname = "barretenberg.wasm";
-  version = "0.6.5"; # x-release-please-version
+  version = "0.6.6"; # x-release-please-version
 
   src = ./cpp;
 
diff --git a/circuits/cpp/barretenberg/barretenberg.nix b/circuits/cpp/barretenberg/barretenberg.nix
index 2c4d51b9949..f82fa08b206 100644
--- a/circuits/cpp/barretenberg/barretenberg.nix
+++ b/circuits/cpp/barretenberg/barretenberg.nix
@@ -14,7 +14,7 @@ in
 buildEnv.mkDerivation
 {
   pname = "libbarretenberg";
-  version = "0.6.5"; # x-release-please-version
+  version = "0.6.6"; # x-release-please-version
 
   src = ./cpp;
 
diff --git a/circuits/cpp/barretenberg/cpp/CMakeLists.txt b/circuits/cpp/barretenberg/cpp/CMakeLists.txt
index 2e1f201cf1a..f1825eea176 100644
--- a/circuits/cpp/barretenberg/cpp/CMakeLists.txt
+++ b/circuits/cpp/barretenberg/cpp/CMakeLists.txt
@@ -6,7 +6,7 @@ cmake_minimum_required(VERSION 3.24)
 project(
     Barretenberg
     DESCRIPTION "BN254 elliptic curve library, and PLONK SNARK prover"
-    VERSION 0.6.5 # x-release-please-version
+    VERSION 0.6.6 # x-release-please-version
     LANGUAGES CXX C
 )
 
diff --git a/circuits/cpp/barretenberg/ts/CHANGELOG.md b/circuits/cpp/barretenberg/ts/CHANGELOG.md
index fddd3b1da06..b224fc4d353 100644
--- a/circuits/cpp/barretenberg/ts/CHANGELOG.md
+++ b/circuits/cpp/barretenberg/ts/CHANGELOG.md
@@ -1,5 +1,12 @@
 # Changelog
 
+## [0.6.6](https://github.com/AztecProtocol/aztec-packages/compare/barretenberg.js-v0.6.5...barretenberg.js-v0.6.6) (2023-09-11)
+
+
+### Miscellaneous
+
+* **barretenberg.js:** Synchronize aztec-packages versions
+
 ## [0.6.5](https://github.com/AztecProtocol/aztec-packages/compare/barretenberg.js-v0.6.4...barretenberg.js-v0.6.5) (2023-09-08)
 
 
diff --git a/circuits/cpp/barretenberg/ts/package.json b/circuits/cpp/barretenberg/ts/package.json
index 7ea68ff39ba..3b10a1613c8 100644
--- a/circuits/cpp/barretenberg/ts/package.json
+++ b/circuits/cpp/barretenberg/ts/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@aztec/bb.js",
-  "version": "0.6.5",
+  "version": "0.6.6",
   "homepage": "https://github.com/AztecProtocol/aztec-packages/tree/master/circuits/cpp/barretenberg/ts",
   "license": "MIT",
   "type": "module",