diff --git a/.changeset/calm-nails-dream.md b/.changeset/calm-nails-dream.md
deleted file mode 100644
index ba8d8afc..00000000
--- a/.changeset/calm-nails-dream.md
+++ /dev/null
@@ -1,5 +0,0 @@
----
-"@api3/chains": major
----
-
-Update ApeChain testnet to `curtis` deployment
diff --git a/.changeset/gold-zebras-explain.md b/.changeset/gold-zebras-explain.md
deleted file mode 100644
index afe907ff..00000000
--- a/.changeset/gold-zebras-explain.md
+++ /dev/null
@@ -1,5 +0,0 @@
----
-"@api3/chains": major
----
-
-Update Sei testnet to atlantic-2 deployment (testnet)
diff --git a/.changeset/thick-otters-fold.md b/.changeset/thick-otters-fold.md
deleted file mode 100644
index 62e0d6ee..00000000
--- a/.changeset/thick-otters-fold.md
+++ /dev/null
@@ -1,5 +0,0 @@
----
-"@api3/chains": patch
----
-
-Update OEV Network RPC url
diff --git a/.changeset/yellow-donkeys-sing.md b/.changeset/yellow-donkeys-sing.md
deleted file mode 100644
index 49f49bef..00000000
--- a/.changeset/yellow-donkeys-sing.md
+++ /dev/null
@@ -1,5 +0,0 @@
----
-"@api3/chains": minor
----
-
-Add `camp-sepolia-testnet` chain
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8aee0468..bfaa3ebc 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,20 @@
 # @api3/chains
 
+## 9.0.0
+
+### Major Changes
+
+- 132f74b: Update ApeChain testnet to `curtis` deployment
+- 49742f6: Update Sei testnet to atlantic-2 deployment (testnet)
+
+### Minor Changes
+
+- 1724216: Add `camp-sepolia-testnet` chain
+
+### Patch Changes
+
+- 605ec42: Update OEV Network RPC url
+
 ## 8.1.1
 
 ### Patch Changes
diff --git a/package.json b/package.json
index fed103c4..3fc990f7 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@api3/chains",
   "license": "MIT",
-  "version": "8.1.1",
+  "version": "9.0.0",
   "author": "API3 DAO",
   "private": false,
   "sideEffects": false,