diff --git a/javascript/package.json b/javascript/package.json
index 3be5fe8b1..f2badfa56 100644
--- a/javascript/package.json
+++ b/javascript/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@google/earthengine",
-  "version": "0.0.0",
+  "version": "1.2.0",
   "description": "JavaScript client for Google Earth Engine API.",
   "author": "Google LLC",
   "license": "Apache-2.0",
diff --git a/javascript/src/apiclient.js b/javascript/src/apiclient.js
index e8221acbb..f8b878d42 100644
--- a/javascript/src/apiclient.js
+++ b/javascript/src/apiclient.js
@@ -24,7 +24,7 @@ const {trustedResourceUrl} = goog.require('safevalues');
 /** @namespace */
 const apiclient = {};
 
-const API_CLIENT_VERSION = '0.0.0';
+const API_CLIENT_VERSION = '1.2.0';
 
 exports.VERSION = apiVersion.VERSION;
 exports.API_CLIENT_VERSION = API_CLIENT_VERSION;
diff --git a/python/ee/__init__.py b/python/ee/__init__.py
index fb3fd0173..1b4d48a89 100644
--- a/python/ee/__init__.py
+++ b/python/ee/__init__.py
@@ -1,6 +1,6 @@
 """The EE Python library."""
 
-__version__ = '0.0.0'
+__version__ = '1.2.0rc0'
 
 # Using lowercase function naming to match the JavaScript names.
 # pylint: disable=g-bad-name
diff --git a/python/pyproject.toml b/python/pyproject.toml
index b5052d1ca..20a2d9e7f 100644
--- a/python/pyproject.toml
+++ b/python/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "earthengine-api"
-version = "0.0.0"
+version = "1.2.0rc0"
 description = "Earth Engine Python API"
 readme = "README.md"
 requires-python = ">=3.9"