diff --git a/CHANGELOG.md b/CHANGELOG.md
index 06b34fd..0720811 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,6 @@
 # Changelog
 
-## Unreleased
+## v0.5.1
 
 ### Changed
 
diff --git a/Cargo.lock b/Cargo.lock
index 9edd94d..e0d9eee 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1351,7 +1351,7 @@ checksum = "94143f37725109f92c262ed2cf5e59bce7498c01bcc1502d7b9afe439a4e9f49"
 
 [[package]]
 name = "secondwind"
-version = "0.5.0"
+version = "0.5.1"
 dependencies = [
  "axum",
  "base64 0.22.1",
@@ -1377,7 +1377,7 @@ dependencies = [
 
 [[package]]
 name = "secondwind-analyzers"
-version = "0.5.0"
+version = "0.5.1"
 dependencies = [
  "secondwind-core",
  "serde",
@@ -1385,7 +1385,7 @@ dependencies = [
 
 [[package]]
 name = "secondwind-core"
-version = "0.5.0"
+version = "0.5.1"
 dependencies = [
  "serde",
  "serde_json",
@@ -1393,7 +1393,7 @@ dependencies = [
 
 [[package]]
 name = "secondwind-ffi"
-version = "0.5.0"
+version = "0.5.1"
 dependencies = [
  "secondwind-ledger",
  "secondwind-optimize",
@@ -1402,7 +1402,7 @@ dependencies = [
 
 [[package]]
 name = "secondwind-ledger"
-version = "0.5.0"
+version = "0.5.1"
 dependencies = [
  "secondwind-core",
  "serde",
@@ -1411,7 +1411,7 @@ dependencies = [
 
 [[package]]
 name = "secondwind-optimize"
-version = "0.5.0"
+version = "0.5.1"
 dependencies = [
  "blake3",
  "bpe-openai",
@@ -1429,7 +1429,7 @@ dependencies = [
 
 [[package]]
 name = "secondwind-redact"
-version = "0.5.0"
+version = "0.5.1"
 dependencies = [
  "regex",
  "secondwind-analyzers",
@@ -1439,7 +1439,7 @@ dependencies = [
 
 [[package]]
 name = "secondwind-report"
-version = "0.5.0"
+version = "0.5.1"
 dependencies = [
  "secondwind-analyzers",
  "secondwind-core",
@@ -1450,7 +1450,7 @@ dependencies = [
 
 [[package]]
 name = "secondwind-sources"
-version = "0.5.0"
+version = "0.5.1"
 dependencies = [
  "secondwind-core",
  "serde",
@@ -1460,7 +1460,7 @@ dependencies = [
 
 [[package]]
 name = "secondwind-tap"
-version = "0.5.0"
+version = "0.5.1"
 dependencies = [
  "secondwind-analyzers",
  "secondwind-core",
diff --git a/Cargo.toml b/Cargo.toml
index 0e4c36d..4d2fd08 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -14,7 +14,7 @@ members = [
 ]
 
 [workspace.package]
-version = "0.5.0"
+version = "0.5.1"
 edition = "2024"
 license = "Apache-2.0"
 repository = "https://github.com/orchetron/secondwind"
diff --git a/bindings/node/package.json b/bindings/node/package.json
index 1cebfff..9c4cd5d 100644
--- a/bindings/node/package.json
+++ b/bindings/node/package.json
@@ -1,6 +1,6 @@
 {
   "name": "secondwind",
-  "version": "0.5.0",
+  "version": "0.5.1",
   "description": "Lossless, provable, composable LLM context compression",
   "type": "module",
   "exports": {
@@ -32,11 +32,11 @@
     "koffi": "^3.1.1"
   },
   "optionalDependencies": {
-    "@orchetron/secondwind-darwin-arm64": "0.5.0",
-    "@orchetron/secondwind-darwin-x64": "0.5.0",
-    "@orchetron/secondwind-linux-x64": "0.5.0",
-    "@orchetron/secondwind-linux-arm64": "0.5.0",
-    "@orchetron/secondwind-win32-x64": "0.5.0"
+    "@orchetron/secondwind-darwin-arm64": "0.5.1",
+    "@orchetron/secondwind-darwin-x64": "0.5.1",
+    "@orchetron/secondwind-linux-x64": "0.5.1",
+    "@orchetron/secondwind-linux-arm64": "0.5.1",
+    "@orchetron/secondwind-win32-x64": "0.5.1"
   },
   "devDependencies": {
     "@ai-sdk/provider": "^4.0.3",
diff --git a/bindings/node/platforms/secondwind-darwin-arm64/package.json b/bindings/node/platforms/secondwind-darwin-arm64/package.json
index f4b4286..0d6390a 100644
--- a/bindings/node/platforms/secondwind-darwin-arm64/package.json
+++ b/bindings/node/platforms/secondwind-darwin-arm64/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@orchetron/secondwind-darwin-arm64",
-  "version": "0.5.0",
+  "version": "0.5.1",
   "description": "secondwind native library for darwin-arm64",
   "license": "Apache-2.0",
   "os": [
diff --git a/bindings/node/platforms/secondwind-darwin-x64/package.json b/bindings/node/platforms/secondwind-darwin-x64/package.json
index 07ebcd2..5fcf320 100644
--- a/bindings/node/platforms/secondwind-darwin-x64/package.json
+++ b/bindings/node/platforms/secondwind-darwin-x64/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@orchetron/secondwind-darwin-x64",
-  "version": "0.5.0",
+  "version": "0.5.1",
   "description": "secondwind native library for darwin-x64",
   "license": "Apache-2.0",
   "os": [
diff --git a/bindings/node/platforms/secondwind-linux-arm64/package.json b/bindings/node/platforms/secondwind-linux-arm64/package.json
index f53865d..f93ba55 100644
--- a/bindings/node/platforms/secondwind-linux-arm64/package.json
+++ b/bindings/node/platforms/secondwind-linux-arm64/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@orchetron/secondwind-linux-arm64",
-  "version": "0.5.0",
+  "version": "0.5.1",
   "description": "secondwind native library for linux-arm64",
   "license": "Apache-2.0",
   "os": [
diff --git a/bindings/node/platforms/secondwind-linux-x64/package.json b/bindings/node/platforms/secondwind-linux-x64/package.json
index 598895a..68788a8 100644
--- a/bindings/node/platforms/secondwind-linux-x64/package.json
+++ b/bindings/node/platforms/secondwind-linux-x64/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@orchetron/secondwind-linux-x64",
-  "version": "0.5.0",
+  "version": "0.5.1",
   "description": "secondwind native library for linux-x64",
   "license": "Apache-2.0",
   "os": [
diff --git a/bindings/node/platforms/secondwind-win32-x64/package.json b/bindings/node/platforms/secondwind-win32-x64/package.json
index 35c8344..2af3698 100644
--- a/bindings/node/platforms/secondwind-win32-x64/package.json
+++ b/bindings/node/platforms/secondwind-win32-x64/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@orchetron/secondwind-win32-x64",
-  "version": "0.5.0",
+  "version": "0.5.1",
   "description": "secondwind native library for win32-x64",
   "license": "Apache-2.0",
   "os": [
diff --git a/bindings/python/pyproject.toml b/bindings/python/pyproject.toml
index 0bc7cbf..be08160 100644
--- a/bindings/python/pyproject.toml
+++ b/bindings/python/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "secondwind"
-version = "0.5.0"
+version = "0.5.1"
 description = "Lossless, provable, composable LLM context compression"
 readme = "README.md"
 requires-python = ">=3.9"