diff --git a/api/CHANGELOG.md b/api/CHANGELOG.md
index 9f7f0aaee5..1cf8177fce 100644
--- a/api/CHANGELOG.md
+++ b/api/CHANGELOG.md
@@ -1,3 +1,11 @@
+## 0.38.1
+
+_05/22/2024_
+
+### Changes
+https://github.com/gear-tech/gear-js/pull/1544
+- Update getting program pages according to https://github.com/gear-tech/gear/pull/3791
+
 ## 0.38.0
 
 _04/26/2024_
diff --git a/api/package.json b/api/package.json
index 65d2208c5f..4f515bf9b7 100644
--- a/api/package.json
+++ b/api/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@gear-js/api",
-  "version": "0.38.0",
+  "version": "0.38.1",
   "description": "A JavaScript library that provides functionality to connect GEAR Component APIs.",
   "main": "cjs/index.js",
   "module": "index.js",
diff --git a/api/src/Storage.ts b/api/src/Storage.ts
index 11cbd66c4e..dc1ee10273 100644
--- a/api/src/Storage.ts
+++ b/api/src/Storage.ts
@@ -55,10 +55,10 @@ export class GearProgramStorage {
 
     const args = this._api.specVersion >= SPEC_VERSION.V1100 ? [programId, program.memoryInfix] : [programId];
 
-    for (const page of program.pagesWithData) {
-      pages[page.toNumber()] = u8aToU8a(
-        await this._api.provider.send('state_getStorage', [query.key(...args, page), at]),
-      );
+    for (const [start, end] of program.pagesWithData.inner) {
+      for (let page = start.toNumber(); page <= end.toNumber(); page++) {
+        pages[page] = u8aToU8a(await this._api.provider.send('state_getStorage', [query.key(...args, page), at]));
+      }
     }
     return pages;
   }
diff --git a/api/src/types/lookup.ts b/api/src/types/lookup.ts
index 1f92343279..64bb3bf1e8 100644
--- a/api/src/types/lookup.ts
+++ b/api/src/types/lookup.ts
@@ -563,10 +563,12 @@ export interface GearCommonProgram extends Enum {
   readonly type: 'Active' | 'Exited' | 'Terminated';
 }
 
-/** @name GearCommonActiveProgram (581) */
+/** @name GearCommonActiveProgram (593) */
 export interface GearCommonActiveProgram extends Struct {
-  readonly allocations: BTreeSet<u32>;
-  readonly pagesWithData: BTreeSet<u32>;
+  readonly allocations: {
+    readonly inner: BTreeMap<u32, u32>;
+  } & Struct;
+  readonly pagesWithData: NumeratedTreeIntervalsTree;
   readonly memoryInfix: u32;
   readonly gasReservationMap: BTreeMap<GearCoreIdsReservationId, GearCoreReservationGasReservationSlot>;
   readonly codeHash: H256;
@@ -576,6 +578,11 @@ export interface GearCommonActiveProgram extends Struct {
   readonly expirationBlock: u32;
 }
 
+/** @name NumeratedTreeIntervalsTree (598) */
+export interface NumeratedTreeIntervalsTree extends Struct {
+  readonly inner: BTreeMap<u32, u32>;
+}
+
 /** @name GearCoreReservationGasReservationSlot (586) */
 export interface GearCoreReservationGasReservationSlot extends Struct {
   readonly amount: u64;