diff --git a/CHANGELOG.md b/CHANGELOG.md
index f157a815..5982ab04 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,14 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/).
 
 ## [Unreleased]
 
+## [2.2.2] - 2026-06-01
+
+### Fixed
+
+- **Passthrough mode memory leak**: Fixed a per-statement memory leak that occurred in passthrough mode (empty encrypt config), where per-statement queues were not drained. Long-running connections could grow unbounded and eventually OOM. ([#400](https://github.com/cipherstash/proxy/issues/400))
+
+## [2.2.1] - 2026-05-14
+
 ### Added
 
 - **OPE (Order-Preserving Encryption) index**: New `ope` index type alongside the existing `ore` for range and `ORDER BY` queries on encrypted columns. Drop-in alternative to `ore` — pick one per column. See the [encrypted indexes documentation](docs/how-to/index.md) for configuration.
@@ -253,7 +261,9 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/).
 - Integration with CipherStash ZeroKMS.
 - Encrypt Query Language (EQL) for indexing and searching encrypted data.
 
-[Unreleased]: https://github.com/cipherstash/proxy/compare/v2.2.0-alpha.1...HEAD
+[Unreleased]: https://github.com/cipherstash/proxy/compare/v2.2.2...HEAD
+[2.2.2]: https://github.com/cipherstash/proxy/compare/v2.2.1...v2.2.2
+[2.2.1]: https://github.com/cipherstash/proxy/compare/v2.2.0-alpha.1...v2.2.1
 [2.2.0-alpha.1]: https://github.com/cipherstash/proxy/compare/v2.1.22...v2.2.0-alpha.1
 [2.1.22]: https://github.com/cipherstash/proxy/releases/tag/v2.1.22
 [2.1.21]: https://github.com/cipherstash/proxy/releases/tag/v2.1.21
diff --git a/Cargo.lock b/Cargo.lock
index c0ff097c..0c803032 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -835,7 +835,7 @@ dependencies = [
 
 [[package]]
 name = "cipherstash-proxy"
-version = "2.2.0-alpha.1"
+version = "2.2.2"
 dependencies = [
  "arc-swap",
  "async-trait",
@@ -1527,7 +1527,7 @@ dependencies = [
 
 [[package]]
 name = "eql-mapper-macros"
-version = "2.2.0-alpha.1"
+version = "2.2.2"
 dependencies = [
  "pretty_assertions",
  "proc-macro2",
@@ -4212,7 +4212,7 @@ checksum = "0fda2ff0d084019ba4d7c6f371c95d8fd75ce3524c3cb8fb653a3023f6323e64"
 
 [[package]]
 name = "showcase"
-version = "2.2.0-alpha.1"
+version = "2.2.2"
 dependencies = [
  "rand 0.9.2",
  "rustls",
diff --git a/Cargo.toml b/Cargo.toml
index ee245b83..1553fb88 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -3,7 +3,7 @@ resolver = "2"
 members = ["packages/*"]
 
 [workspace.package]
-version = "2.2.0-alpha.1"
+version = "2.2.2"
 edition = "2021"
 
 [profile.dev]
diff --git a/packages/cipherstash-proxy/Cargo.toml b/packages/cipherstash-proxy/Cargo.toml
index 34abe065..790cea6f 100644
--- a/packages/cipherstash-proxy/Cargo.toml
+++ b/packages/cipherstash-proxy/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "cipherstash-proxy"
-version = "2.2.0-alpha.1"
+version.workspace = true
 edition = "2021"
 
 [dependencies]