diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5b5cb064b..351958744 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,46 @@
 # Changelog
 
+## [0.21.0](https://github.com/AztecProtocol/aztec-packages/compare/barretenberg-v0.20.0...barretenberg-v0.21.0) (2024-01-30)
+
+
+### ⚠ BREAKING CHANGES
+
+* add opcode for sha256 compression function ([#4229](https://github.com/AztecProtocol/aztec-packages/issues/4229))
+* 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))
+* Add opcode for sha256 compression function ([#4229](https://github.com/AztecProtocol/aztec-packages/issues/4229)) ([ac25ff7](https://github.com/AztecProtocol/aztec-packages/commit/ac25ff737a934a5f260605f4497e4074c3ed5824))
+* **avm:** Bytecode avm control flow ([#4253](https://github.com/AztecProtocol/aztec-packages/issues/4253)) ([fb1d742](https://github.com/AztecProtocol/aztec-packages/commit/fb1d7420860a35e68b987e790abdaba18595219b)), closes [#4209](https://github.com/AztecProtocol/aztec-packages/issues/4209)
+* **avm:** Bytecode parsing and proof generation ([#4191](https://github.com/AztecProtocol/aztec-packages/issues/4191)) ([6c70548](https://github.com/AztecProtocol/aztec-packages/commit/6c70548a98c8e01bc7925d98ece9a2eda4139f69)), closes [#3791](https://github.com/AztecProtocol/aztec-packages/issues/3791)
+* 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))
+* Produce graph of internal Barretenberg dependencies ([#4225](https://github.com/AztecProtocol/aztec-packages/issues/4225)) ([88e7923](https://github.com/AztecProtocol/aztec-packages/commit/88e7923ed2ecd747b65f72c5955016c6a1b80b9f))
+* 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))
+* Generic Honk dependencies ([#4239](https://github.com/AztecProtocol/aztec-packages/issues/4239)) ([382dfbe](https://github.com/AztecProtocol/aztec-packages/commit/382dfbed6aa4c6da7b3c897f8a5f9639843d7037))
+
+
+### 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/cpp/CMakeLists.txt b/cpp/CMakeLists.txt
index 1bd35206d..c4fc0abad 100644
--- a/cpp/CMakeLists.txt
+++ b/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/ts/CHANGELOG.md b/ts/CHANGELOG.md
index 6feb64173..300ec84bb 100644
--- a/ts/CHANGELOG.md
+++ b/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) (2024-01-30)
+
+
+### 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/ts/package.json b/ts/package.json
index 59b2a7236..cb561061d 100644
--- a/ts/package.json
+++ b/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",