diff --git a/CHANGELOG.md b/CHANGELOG.md
index 326b03dcb..a380bc2ec 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,15 +1,16 @@
-# News
-
-Planned for v1.0.0:
+# Planned changes for v1.0.0:
 
 - `permute` will be a wrapper around to `QuantumInterface.permutesubsystems`. Documentation for `permute!` would be similarly updated
 - reworking the rest of `NoisyCircuits` and moving it out of `Experimental`
 
-## v0.6.7
+# News
+
+## v0.6.7 - 2022-12-27
 
 - **(fix)** Fixed bug in `CliffordOperator(AbstractTwoQubitOperator)`.
 - Fixes to inference failures (detected by JET).
 - Significant test coverage increase.
+- Significant improvement in TTFX thanks to fixes to Polyester.jl (for Julia 1.9).
 - Stabilizing a few features, moving out of `Experimental.NoisyCircuits`
     - `applynoise!`
     - `affectedqubits`
diff --git a/Project.toml b/Project.toml
index 40fe6065e..6fcfb8548 100644
--- a/Project.toml
+++ b/Project.toml
@@ -1,7 +1,7 @@
 name = "QuantumClifford"
 uuid = "0525e862-1e90-11e9-3e4d-1b39d7109de1"
 authors = ["Stefan Krastanov <stefan@krastanov.org>"]
-version = "0.6.6"
+version = "0.6.7"
 
 [deps]
 Combinatorics = "861a8166-3701-5b0c-9a16-15d98fcdc6aa"
@@ -26,7 +26,7 @@ HostCPUFeatures = "0.1.6"
 ILog2 = "0.2.3"
 MacroTools = "0.5.9"
 Nemo = "0.28, 0.29, 0.30, 0.31, 0.32"
-Polyester = "0.6.14"
+Polyester = "0.6.19"
 QuantumInterface = "0.1.0"
 SIMD = "3.4.0"
 SnoopPrecompile = "1"