diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index fce3dcc81f62..6bed8a5067f2 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,5 +1,5 @@
 {
-  ".": "0.20.0",
-  "barretenberg": "0.20.0",
-  "barretenberg/ts": "0.20.0"
+  ".": "0.21.0",
+  "barretenberg": "0.21.0",
+  "barretenberg/ts": "0.21.0"
 }
diff --git a/CHANGELOG.md b/CHANGELOG.md
index d71d1a92c8cd..40ac8cca5839 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,60 @@
 # Changelog
 
+## [0.21.0](https://github.com/AztecProtocol/aztec-packages/compare/aztec-packages-v0.20.0...aztec-packages-v0.21.0) (2024-01-25)
+
+
+### ⚠ BREAKING CHANGES
+
+* add opcode for poseidon2 permutation ([#4214](https://github.com/AztecProtocol/aztec-packages/issues/4214))
+* remove ec_double opcode ([#4210](https://github.com/AztecProtocol/aztec-packages/issues/4210))
+* Updates singleton usage ([#4186](https://github.com/AztecProtocol/aztec-packages/issues/4186))
+* Add big int opcodes (without implementation) ([#4050](https://github.com/AztecProtocol/aztec-packages/issues/4050))
+
+### Features
+
+* **3738:** AVM basic arithmetic operations for non ff types ([#3881](https://github.com/AztecProtocol/aztec-packages/issues/3881)) ([457a3f9](https://github.com/AztecProtocol/aztec-packages/commit/457a3f9b0c05f58cc88ef43763c5d55b6debaf05)), closes [#3996](https://github.com/AztecProtocol/aztec-packages/issues/3996)
+* Add big int opcodes (without implementation) ([#4050](https://github.com/AztecProtocol/aztec-packages/issues/4050)) ([bcab9ce](https://github.com/AztecProtocol/aztec-packages/commit/bcab9ceab62bede3bc1c105b3e639e7c64e3217a))
+* Add comparators to get/view note ([#3136](https://github.com/AztecProtocol/aztec-packages/issues/3136)) ([#4205](https://github.com/AztecProtocol/aztec-packages/issues/4205)) ([6de36b3](https://github.com/AztecProtocol/aztec-packages/commit/6de36b39825785ec96a967b1ff4f2cbb83943ebb))
+* Add inclusion check l1->l2 ([#4141](https://github.com/AztecProtocol/aztec-packages/issues/4141)) ([bef65c3](https://github.com/AztecProtocol/aztec-packages/commit/bef65c38c58427325b4481ab794f0fb4f12196b0))
+* Add opcode for poseidon2 permutation ([#4214](https://github.com/AztecProtocol/aztec-packages/issues/4214)) ([53c5ba5](https://github.com/AztecProtocol/aztec-packages/commit/53c5ba5fa2a86aba16bba8aa8d3a594a789e3e24))
+* **avm:** Add tests for memory and bitwise instructions ([#4184](https://github.com/AztecProtocol/aztec-packages/issues/4184)) ([6dac650](https://github.com/AztecProtocol/aztec-packages/commit/6dac6504fdbe85c61ffd7aad7c37cc1b52ebf6d4))
+* **avm:** Initial external calls ([#4194](https://github.com/AztecProtocol/aztec-packages/issues/4194)) ([d8aa966](https://github.com/AztecProtocol/aztec-packages/commit/d8aa9662730028824a4e7de2cd1dc6b95359ff21))
+* **avm:** Link up storage ([#4150](https://github.com/AztecProtocol/aztec-packages/issues/4150)) ([3e86870](https://github.com/AztecProtocol/aztec-packages/commit/3e868705ca9b1ca05d962a7f5399a41ce470b120))
+* **avm:** Tagged memory ([#4213](https://github.com/AztecProtocol/aztec-packages/issues/4213)) ([e5ff2f6](https://github.com/AztecProtocol/aztec-packages/commit/e5ff2f60e20e9e85972515d845d5d45a0117409f))
+* Contract classes and instances ([#4192](https://github.com/AztecProtocol/aztec-packages/issues/4192)) ([1858126](https://github.com/AztecProtocol/aztec-packages/commit/18581265dfd6d6aff42f9b90fd8425159d501f46)), closes [#4053](https://github.com/AztecProtocol/aztec-packages/issues/4053)
+* **docs:** Historical trees docs ([#3895](https://github.com/AztecProtocol/aztec-packages/issues/3895)) ([8c3efba](https://github.com/AztecProtocol/aztec-packages/commit/8c3efba92f74905709760f3d8838df50076aaa92))
+* **docs:** PXE docs ([#4021](https://github.com/AztecProtocol/aztec-packages/issues/4021)) ([a656034](https://github.com/AztecProtocol/aztec-packages/commit/a6560343fb333a6f725bc9d8c41e8594ea2e00b0))
+* Implement bigint in Noir, using bigint opcodes ([#4198](https://github.com/AztecProtocol/aztec-packages/issues/4198)) ([3720415](https://github.com/AztecProtocol/aztec-packages/commit/3720415c8bf2b6f3292d961795eb13f08cb9dff5))
+* Implement Embedded EC add and double opcodes ([#3982](https://github.com/AztecProtocol/aztec-packages/issues/3982)) ([ccb7bff](https://github.com/AztecProtocol/aztec-packages/commit/ccb7bff8e16ea9c8bc4bd48754db59857137507e))
+* Recursive folding and decider verifier for Protogalaxy ([#4156](https://github.com/AztecProtocol/aztec-packages/issues/4156)) ([9342048](https://github.com/AztecProtocol/aztec-packages/commit/93420480603b2dfa126e5bddb08cd768b7093352))
+* Remove ec_double opcode ([#4210](https://github.com/AztecProtocol/aztec-packages/issues/4210)) ([75f26c4](https://github.com/AztecProtocol/aztec-packages/commit/75f26c4f2a9cf185891234eab6ec4f213d31fc50))
+* Replace single bit range constraints with basic bool gates ([#4164](https://github.com/AztecProtocol/aztec-packages/issues/4164)) ([0a3553b](https://github.com/AztecProtocol/aztec-packages/commit/0a3553b10e02374843181901709933975dc36bb4))
+* Updates singleton usage ([#4186](https://github.com/AztecProtocol/aztec-packages/issues/4186)) ([301f0e6](https://github.com/AztecProtocol/aztec-packages/commit/301f0e6d0832a999a31d0e9a5b4e8267474de6ab))
+
+
+### Bug Fixes
+
+* **bb:** .gitignore ([#4201](https://github.com/AztecProtocol/aztec-packages/issues/4201)) ([a56e418](https://github.com/AztecProtocol/aztec-packages/commit/a56e418b0fe90b77b7a9fd6bcb0e40cd15260fd6))
+
+
+### Miscellaneous
+
+* **avm:** Remove the state manager in favour of journal ([#4195](https://github.com/AztecProtocol/aztec-packages/issues/4195)) ([40f9324](https://github.com/AztecProtocol/aztec-packages/commit/40f9324a88fef3f762f5e6a21ccd3f200f8b8c4a))
+* **bb:** Rearrange namespaces ([#4147](https://github.com/AztecProtocol/aztec-packages/issues/4147)) ([5de0a8e](https://github.com/AztecProtocol/aztec-packages/commit/5de0a8e8dce2483230cccb1d716613966089f2f6))
+* Delete C++ PK circuits ([#4219](https://github.com/AztecProtocol/aztec-packages/issues/4219)) ([9136d32](https://github.com/AztecProtocol/aztec-packages/commit/9136d32268db350779d51e45884368be3a694220))
+* **docs:** Fix token bridge tutorial ([#3935](https://github.com/AztecProtocol/aztec-packages/issues/3935)) ([84c9fdb](https://github.com/AztecProtocol/aztec-packages/commit/84c9fdbecf0b44a0897badcc12e5a9b333da4ec0))
+* Fixes test file from [#4205](https://github.com/AztecProtocol/aztec-packages/issues/4205) ([#4216](https://github.com/AztecProtocol/aztec-packages/issues/4216)) ([18a9b72](https://github.com/AztecProtocol/aztec-packages/commit/18a9b72dc9df95f517bb90fbcf0ebe45e7430d9a))
+* Remove flaky e2e p2p test ([#4181](https://github.com/AztecProtocol/aztec-packages/issues/4181)) ([688e4af](https://github.com/AztecProtocol/aztec-packages/commit/688e4afc2b8be8b7766baf5180c89fe985ebf6cd))
+* Remove mandatory jsdoc ([#4180](https://github.com/AztecProtocol/aztec-packages/issues/4180)) ([9625b43](https://github.com/AztecProtocol/aztec-packages/commit/9625b4350a54c43f55841b508e3f86e7d7d6635b)), closes [#3860](https://github.com/AztecProtocol/aztec-packages/issues/3860)
+* Replace relative paths to noir-protocol-circuits ([12adb71](https://github.com/AztecProtocol/aztec-packages/commit/12adb71d3c7c03eca8b315d3d1192368d315ca45))
+* Replace relative paths to noir-protocol-circuits ([fcd048d](https://github.com/AztecProtocol/aztec-packages/commit/fcd048d6a1ef6d84506f29d4e2aa49657fe6ca21))
+
+
+### Documentation
+
+* **bb:** How to use docker_interactive.sh ([#4220](https://github.com/AztecProtocol/aztec-packages/issues/4220)) ([f44c6b1](https://github.com/AztecProtocol/aztec-packages/commit/f44c6b173856331a6ca4d00d50436671735172a2))
+* Update welcome page and dev pages ([#4143](https://github.com/AztecProtocol/aztec-packages/issues/4143)) ([d2a86ff](https://github.com/AztecProtocol/aztec-packages/commit/d2a86ff1f1eb79a47f6297f665c11e8aafcb584b))
+
 ## [0.20.0](https://github.com/AztecProtocol/aztec-packages/compare/aztec-packages-v0.19.0...aztec-packages-v0.20.0) (2024-01-22)
 
 
diff --git a/barretenberg/CHANGELOG.md b/barretenberg/CHANGELOG.md
index 5b5cb064b64f..58f8795871bc 100644
--- a/barretenberg/CHANGELOG.md
+++ b/barretenberg/CHANGELOG.md
@@ -1,5 +1,40 @@
 # Changelog
 
+## [0.21.0](https://github.com/AztecProtocol/aztec-packages/compare/barretenberg-v0.20.0...barretenberg-v0.21.0) (2024-01-25)
+
+
+### ⚠ BREAKING CHANGES
+
+* add opcode for poseidon2 permutation ([#4214](https://github.com/AztecProtocol/aztec-packages/issues/4214))
+* remove ec_double opcode ([#4210](https://github.com/AztecProtocol/aztec-packages/issues/4210))
+* Add big int opcodes (without implementation) ([#4050](https://github.com/AztecProtocol/aztec-packages/issues/4050))
+
+### Features
+
+* **3738:** AVM basic arithmetic operations for non ff types ([#3881](https://github.com/AztecProtocol/aztec-packages/issues/3881)) ([457a3f9](https://github.com/AztecProtocol/aztec-packages/commit/457a3f9b0c05f58cc88ef43763c5d55b6debaf05)), closes [#3996](https://github.com/AztecProtocol/aztec-packages/issues/3996)
+* Add big int opcodes (without implementation) ([#4050](https://github.com/AztecProtocol/aztec-packages/issues/4050)) ([bcab9ce](https://github.com/AztecProtocol/aztec-packages/commit/bcab9ceab62bede3bc1c105b3e639e7c64e3217a))
+* Add opcode for poseidon2 permutation ([#4214](https://github.com/AztecProtocol/aztec-packages/issues/4214)) ([53c5ba5](https://github.com/AztecProtocol/aztec-packages/commit/53c5ba5fa2a86aba16bba8aa8d3a594a789e3e24))
+* Implement Embedded EC add and double opcodes ([#3982](https://github.com/AztecProtocol/aztec-packages/issues/3982)) ([ccb7bff](https://github.com/AztecProtocol/aztec-packages/commit/ccb7bff8e16ea9c8bc4bd48754db59857137507e))
+* Recursive folding and decider verifier for Protogalaxy ([#4156](https://github.com/AztecProtocol/aztec-packages/issues/4156)) ([9342048](https://github.com/AztecProtocol/aztec-packages/commit/93420480603b2dfa126e5bddb08cd768b7093352))
+* Remove ec_double opcode ([#4210](https://github.com/AztecProtocol/aztec-packages/issues/4210)) ([75f26c4](https://github.com/AztecProtocol/aztec-packages/commit/75f26c4f2a9cf185891234eab6ec4f213d31fc50))
+* Replace single bit range constraints with basic bool gates ([#4164](https://github.com/AztecProtocol/aztec-packages/issues/4164)) ([0a3553b](https://github.com/AztecProtocol/aztec-packages/commit/0a3553b10e02374843181901709933975dc36bb4))
+
+
+### Bug Fixes
+
+* **bb:** .gitignore ([#4201](https://github.com/AztecProtocol/aztec-packages/issues/4201)) ([a56e418](https://github.com/AztecProtocol/aztec-packages/commit/a56e418b0fe90b77b7a9fd6bcb0e40cd15260fd6))
+
+
+### Miscellaneous
+
+* **bb:** Rearrange namespaces ([#4147](https://github.com/AztecProtocol/aztec-packages/issues/4147)) ([5de0a8e](https://github.com/AztecProtocol/aztec-packages/commit/5de0a8e8dce2483230cccb1d716613966089f2f6))
+* Delete C++ PK circuits ([#4219](https://github.com/AztecProtocol/aztec-packages/issues/4219)) ([9136d32](https://github.com/AztecProtocol/aztec-packages/commit/9136d32268db350779d51e45884368be3a694220))
+
+
+### Documentation
+
+* **bb:** How to use docker_interactive.sh ([#4220](https://github.com/AztecProtocol/aztec-packages/issues/4220)) ([f44c6b1](https://github.com/AztecProtocol/aztec-packages/commit/f44c6b173856331a6ca4d00d50436671735172a2))
+
 ## [0.20.0](https://github.com/AztecProtocol/aztec-packages/compare/barretenberg-v0.19.0...barretenberg-v0.20.0) (2024-01-22)
 
 
diff --git a/barretenberg/cpp/CMakeLists.txt b/barretenberg/cpp/CMakeLists.txt
index 1bd35206df0e..c4fc0abad92e 100644
--- a/barretenberg/cpp/CMakeLists.txt
+++ b/barretenberg/cpp/CMakeLists.txt
@@ -6,7 +6,7 @@ cmake_minimum_required(VERSION 3.24 FATAL_ERROR)
 project(
     Barretenberg
     DESCRIPTION "BN254 elliptic curve library, and PLONK SNARK prover"
-    VERSION 0.20.0 # x-release-please-version
+    VERSION 0.21.0 # x-release-please-version
     LANGUAGES CXX C
 )
 # Insert version into `bb` config file
diff --git a/barretenberg/ts/CHANGELOG.md b/barretenberg/ts/CHANGELOG.md
index 6feb64173df5..654a2da129bf 100644
--- a/barretenberg/ts/CHANGELOG.md
+++ b/barretenberg/ts/CHANGELOG.md
@@ -1,5 +1,12 @@
 # Changelog
 
+## [0.21.0](https://github.com/AztecProtocol/aztec-packages/compare/barretenberg.js-v0.20.0...barretenberg.js-v0.21.0) (2024-01-25)
+
+
+### Miscellaneous
+
+* **barretenberg.js:** Synchronize aztec-packages versions
+
 ## [0.20.0](https://github.com/AztecProtocol/aztec-packages/compare/barretenberg.js-v0.19.0...barretenberg.js-v0.20.0) (2024-01-22)
 
 
diff --git a/barretenberg/ts/package.json b/barretenberg/ts/package.json
index 59b2a7236b0e..cb561061d124 100644
--- a/barretenberg/ts/package.json
+++ b/barretenberg/ts/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@aztec/bb.js",
-  "version": "0.20.0",
+  "version": "0.21.0",
   "homepage": "https://github.com/AztecProtocol/aztec-packages/tree/master/barretenberg/ts",
   "license": "MIT",
   "type": "module",