diff --git a/CHANGELOG.md b/CHANGELOG.md
index ac43f66..a89769b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,12 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 
 ## [Unreleased]
 
+## [0.2.0] - 2023-12-05
+
+### Added
+
+- Created query parameter `anonymousId` for `sponsoredProducts` used on A/B testing.
+
 ## [0.1.0] - 2023-10-24
 
 ### Added
diff --git a/graphql/schema.graphql b/graphql/schema.graphql
index 7534c49..b98d624 100644
--- a/graphql/schema.graphql
+++ b/graphql/schema.graphql
@@ -58,5 +58,9 @@ type Query {
     Rules for pormoting, demoting, adding or removing products
     """
     dynamicRules: [DynamicRuleInput]
+    """
+    Identifier for users, logged in or not. Used for A/B tests.
+    """
+    anonymousId: String
   ): [SponsoredProduct] @cacheControl(scope: PUBLIC, maxAge: SHORT)
 }