diff --git a/src/dtos/types.ts b/src/dtos/types.ts
index b2fc6068..94f24113 100644
--- a/src/dtos/types.ts
+++ b/src/dtos/types.ts
@@ -219,6 +219,7 @@ export interface IDefinition extends TargetingEntity {
   trafficTypeName: string;
   sets?: string[];
   impressionsDisabled?: boolean;
+  version?: number;
   prerequisites?: null | {
     n: string,
     ts: string[]
diff --git a/src/evaluator/index.ts b/src/evaluator/index.ts
index 18f69b4c..87f04dde 100644
--- a/src/evaluator/index.ts
+++ b/src/evaluator/index.ts
@@ -159,7 +159,7 @@ function getEvaluation(
     // If the storage is async and the evaluated flag uses segments or dependencies, evaluation is thenable
     if (thenable(evaluation)) {
       return evaluation.then(result => {
-        result.changeNumber = definition.changeNumber;
+        result.changeNumber = definition.version || definition.changeNumber;
         result.config = definition.configurations && definition.configurations[result.treatment] || null;
         // @ts-expect-error impressionsDisabled is not exposed in the public typings yet.
         result.impressionsDisabled = options?.impressionsDisabled || definition.impressionsDisabled;
@@ -167,7 +167,7 @@ function getEvaluation(
         return result;
       });
     } else {
-      evaluation.changeNumber = definition.changeNumber;
+      evaluation.changeNumber = definition.version || definition.changeNumber;
       evaluation.config = definition.configurations && definition.configurations[evaluation.treatment] || null;
       // @ts-expect-error impressionsDisabled is not exposed in the public typings yet.
       evaluation.impressionsDisabled = options?.impressionsDisabled || definition.impressionsDisabled;
@@ -236,7 +236,7 @@ function getDefaultTreatment(
       treatment: definition.defaultTreatment,
       label: NO_CONDITION_MATCH, // "default rule"
       config: definition.configurations && definition.configurations[definition.defaultTreatment] || null,
-      changeNumber: definition.changeNumber
+      changeNumber: definition.version || definition.changeNumber
     };
   }
 
diff --git a/src/sync/polling/fetchers/__tests__/configsFetcher.spec.ts b/src/sync/polling/fetchers/__tests__/configsFetcher.spec.ts
index 8ea9e469..f355b6d5 100644
--- a/src/sync/polling/fetchers/__tests__/configsFetcher.spec.ts
+++ b/src/sync/polling/fetchers/__tests__/configsFetcher.spec.ts
@@ -8,6 +8,7 @@ const INPUT: IConfigsResponse = {
     name: 'SomeConfig1',
     variants: [{ name: 'v1', definition: { prop1: true, prop2: 123 } }, { name: 'v2', definition: { prop1: false, prop2: 456 } }],
     changeNumber: 0,
+    version: 1,
     targeting: { default: 'v2', conditions: [{ partitions: [{ variant: 'v1', size: 100 }], label: 'main condition', matchers: [{ type: 'IS_EQUAL_TO', data: { type: 'NUMBER', number: 42 }, attribute: 'age' }, { type: 'WHITELIST', data: { strings: ['a', 'b', 'c'] }, attribute: 'favoriteCharacter' }] }] }
   }],
 };
@@ -19,6 +20,7 @@ const EXPECTED_OUTPUT: IDefinitionChangesResponse = {
     d: [{
       name: 'SomeConfig1',
       changeNumber: 0,
+      version: 1,
       status: 'ACTIVE',
       killed: false,
       defaultTreatment: 'v2',
diff --git a/src/sync/polling/fetchers/configsFetcher.ts b/src/sync/polling/fetchers/configsFetcher.ts
index f5e485de..9926ea54 100644
--- a/src/sync/polling/fetchers/configsFetcher.ts
+++ b/src/sync/polling/fetchers/configsFetcher.ts
@@ -132,7 +132,8 @@ function convertConfigToDefinition(config: IConfig): IDefinition {
 
   return {
     name: config.name,
-    changeNumber: config.changeNumber || 0,
+    version: config.version,
+    changeNumber: config.changeNumber,
     status: 'ACTIVE',
     conditions,
     killed: false,
diff --git a/src/sync/submitters/types.ts b/src/sync/submitters/types.ts
index 57e8bfd5..9042210b 100644
--- a/src/sync/submitters/types.ts
+++ b/src/sync/submitters/types.ts
@@ -12,7 +12,7 @@ type ImpressionPayload = {
   t: string;
   /** Timestamp */
   m: number;
-  /** Change number */
+  /** Version */
   c: number;
   /** Rule label */
   r?: string;