diff --git a/CHANGELOG.md b/CHANGELOG.md
index a63e10b793..4763c101ee 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,26 @@
 
 All notable changes to this project will be documented in this file. See [standard-version](https://github.com/conventional-changelog/standard-version) for commit guidelines.
 
+## [1.66.0](https://github.com/rudderlabs/rudder-transformer/compare/v1.65.1...v1.66.0) (2024-05-13)
+
+
+### Features
+
+* add identify event and the latest slack event schema ([d0c5942](https://github.com/rudderlabs/rudder-transformer/commit/d0c5942e6255dab97b493fff311a4af71a142fd8))
+* add slack source ([9558e3b](https://github.com/rudderlabs/rudder-transformer/commit/9558e3bf848213bc75a58297d234d823b72a274a))
+* add slack source ([#3148](https://github.com/rudderlabs/rudder-transformer/issues/3148)) ([3cbb011](https://github.com/rudderlabs/rudder-transformer/commit/3cbb011811b6f7b52ab29b4ef2794af9c2a5d5f0))
+* onboard monday to proxy ([#3347](https://github.com/rudderlabs/rudder-transformer/issues/3347)) ([a347ab1](https://github.com/rudderlabs/rudder-transformer/commit/a347ab1f7fef9bdf7d797e258867b855acc00876))
+
+
+### Bug Fixes
+
+* add originalTimestamp from slack ts property ([b19eb8c](https://github.com/rudderlabs/rudder-transformer/commit/b19eb8c699b60e90e02b39e3a448e6aac721e37f))
+* default event name normalization to undefined if it cannot be parsed ([db11c3e](https://github.com/rudderlabs/rudder-transformer/commit/db11c3e3d70d13a67d21c5b0043e74ce801bcb4a))
+* filtering url verification event via evvent type ([42d6010](https://github.com/rudderlabs/rudder-transformer/commit/42d6010d93b79ccb996c9548f4c0eeba0e3dacc2))
+* handle error-first ([0771e87](https://github.com/rudderlabs/rudder-transformer/commit/0771e87ff73181c412636f9bde40b8947a3e3080))
+* ninetailed: modify parameter requirements and add default values ([#3364](https://github.com/rudderlabs/rudder-transformer/issues/3364)) ([265a71d](https://github.com/rudderlabs/rudder-transformer/commit/265a71d20b484205245c20dd3e47d108dc2fd16f))
+* use optional chain parameter ([13be5cf](https://github.com/rudderlabs/rudder-transformer/commit/13be5cfb85363cf5c0527247787979467d63caaa))
+
 ### [1.65.1](https://github.com/rudderlabs/rudder-transformer/compare/v1.65.0...v1.65.1) (2024-05-10)
 
 
diff --git a/package-lock.json b/package-lock.json
index 23f524d0ac..14ab853b82 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "rudder-transformer",
-  "version": "1.65.1",
+  "version": "1.66.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "rudder-transformer",
-      "version": "1.65.1",
+      "version": "1.66.0",
       "license": "ISC",
       "dependencies": {
         "@amplitude/ua-parser-js": "0.7.24",
diff --git a/package.json b/package.json
index 00dad8305f..168f49da5e 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "rudder-transformer",
-  "version": "1.65.1",
+  "version": "1.66.0",
   "description": "",
   "homepage": "https://github.com/rudderlabs/rudder-transformer#readme",
   "bugs": {