diff --git a/.changeset/add-celo-chains-assets.md b/.changeset/add-celo-chains-assets.md
deleted file mode 100644
index 60f855b1..00000000
--- a/.changeset/add-celo-chains-assets.md
+++ /dev/null
@@ -1,5 +0,0 @@
----
-'mppx': patch
----
-
-Added Celo and Celo Sepolia to known EVM chains and assets: `chains.celo`, `chains.celoSepolia`, `assets.celo.USDC`, `assets.celo.USDT`, and `assets.celoSepolia.USDC`.
diff --git a/.changeset/fix-session-voucher-replay.md b/.changeset/fix-session-voucher-replay.md
deleted file mode 100644
index 96020221..00000000
--- a/.changeset/fix-session-voucher-replay.md
+++ /dev/null
@@ -1,5 +0,0 @@
----
-'mppx': patch
----
-
-Fixed session voucher replay checks for settled vouchers and mismatched credential sources.
diff --git a/.changeset/seamless-x402-client.md b/.changeset/seamless-x402-client.md
deleted file mode 100644
index de920bd9..00000000
--- a/.changeset/seamless-x402-client.md
+++ /dev/null
@@ -1,5 +0,0 @@
----
-'mppx': patch
----
-
-Updated client negotiation to prefer Payment-auth challenges before x402 challenges.
diff --git a/.changeset/validate-programmatic-api.md b/.changeset/validate-programmatic-api.md
deleted file mode 100644
index 71739c36..00000000
--- a/.changeset/validate-programmatic-api.md
+++ /dev/null
@@ -1,5 +0,0 @@
----
-'mppx': minor
----
-
-Added programmatic validation API (`mppx/validation` export), OpenAPI path parameter substitution, x402 protocol detection, multi-path discovery fallback, and `--outputJson` CLI flag.
diff --git a/.changeset/validate-stream-refactor.md b/.changeset/validate-stream-refactor.md
deleted file mode 100644
index d895c908..00000000
--- a/.changeset/validate-stream-refactor.md
+++ /dev/null
@@ -1,5 +0,0 @@
----
-'mppx': patch
----
-
-`mppx validate`: Stream results as each phase completes instead of batching until the end. Discovery and challenge checks now appear before the payment prompt.
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3b7bff6b..836e7788 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,18 @@
 # mppx
 
+## 0.9.0
+
+### Minor Changes
+
+- fd45726: Added programmatic validation API (`mppx/validation` export), OpenAPI path parameter substitution, x402 protocol detection, multi-path discovery fallback, and `--outputJson` CLI flag.
+
+### Patch Changes
+
+- 38c8229: Added Celo and Celo Sepolia to known EVM chains and assets: `chains.celo`, `chains.celoSepolia`, `assets.celo.USDC`, `assets.celo.USDT`, and `assets.celoSepolia.USDC`.
+- 264f079: Fixed session voucher replay checks for settled vouchers and mismatched credential sources.
+- 33a7c52: Updated client negotiation to prefer Payment-auth challenges before x402 challenges.
+- 86eb98c: `mppx validate`: Stream results as each phase completes instead of batching until the end. Discovery and challenge checks now appear before the payment prompt.
+
 ## 0.8.6
 
 ### Patch Changes
diff --git a/package.json b/package.json
index 37531a79..866f8f24 100644
--- a/package.json
+++ b/package.json
@@ -62,7 +62,7 @@
   "[!start-pkg]": "",
   "name": "mppx",
   "type": "module",
-  "version": "0.8.6",
+  "version": "0.9.0",
   "main": "./dist/index.js",
   "license": "MIT",
   "homepage": "https://github.com/wevm/mppx#readme",