diff --git a/CHANGELOG.md b/CHANGELOG.md
index 22ff676..7b63fdf 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+## v0.6.11 (2026-10-31)
+
+- synthio.Biquad: take CircuitPython main's widened biquad (#353)
+
 ## v0.6.11.dev10 (2026-10-30)
 
 - audiograph: Graph.swap, so a graph the pump is playing trades patches with a freshly compiled one at a block boundary; carry works on a parked graph; a carry no longer copies the source's whole table list on every node (#350)
diff --git a/VERSION b/VERSION
index da714ee..45a346d 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-0.6.11.dev10
+0.6.11