diff --git a/.changeset/sigmastate-js-0.6.0.md b/.changeset/sigmastate-js-0.6.0.md
new file mode 100644
index 00000000..acb6c4f1
--- /dev/null
+++ b/.changeset/sigmastate-js-0.6.0.md
@@ -0,0 +1,5 @@
+---
+"@fleet-sdk/mock-chain": minor
+---
+
+Support sigmastate-js 0.6.0 by replacing removed `AvlTree$.fromDigest()` with `AvlTree` constructor
diff --git a/packages/mock-chain/package.json b/packages/mock-chain/package.json
index 7bd13062..9617c3e4 100644
--- a/packages/mock-chain/package.json
+++ b/packages/mock-chain/package.json
@@ -51,7 +51,7 @@
     "@fleet-sdk/wallet": "workspace:^",
     "diff": "^8.0.3",
     "picocolors": "^1.1.1",
-    "sigmastate-js": "0.4.6"
+    "sigmastate-js": ">=0.4.6"
   },
   "engines": {
     "node": ">=18"
diff --git a/packages/mock-chain/src/objectMocking.ts b/packages/mock-chain/src/objectMocking.ts
index d38f516f..74159f67 100644
--- a/packages/mock-chain/src/objectMocking.ts
+++ b/packages/mock-chain/src/objectMocking.ts
@@ -3,7 +3,7 @@ import { SAFE_MIN_BOX_VALUE } from "@fleet-sdk/core";
 import { hex } from "@fleet-sdk/crypto";
 import { blake2b256, randomBytes } from "@fleet-sdk/crypto";
 import { serializeBox } from "@fleet-sdk/serializer";
-import { AvlTree$, type BlockchainStateContext, GroupElement$ } from "sigmastate-js/main";
+import { AvlTree, type BlockchainStateContext, GroupElement$ } from "sigmastate-js/main";
 
 type MockBoxOptions = Partial<Omit<Box<bigint>, "boxId">> & {
   ergoTree: string;
@@ -105,7 +105,7 @@ export function mockBlockchainStateContext(options?: BlockchainContextMockingOpt
     (h) => ({
       ...h,
       ADProofsRoot: h.adProofsRoot,
-      stateRoot: AvlTree$.fromDigest(h.stateRoot),
+      stateRoot: new AvlTree(h.stateRoot, false, false, false, 32, undefined),
       timestamp: BigInt(h.timestamp),
       nBits: BigInt(h.nBits),
       extensionRoot: h.extensionHash,
diff --git a/packages/mock-chain/src/sigmastate.d.ts b/packages/mock-chain/src/sigmastate.d.ts
index 31573d1c..a8045cc2 100644
--- a/packages/mock-chain/src/sigmastate.d.ts
+++ b/packages/mock-chain/src/sigmastate.d.ts
@@ -121,10 +121,6 @@ declare module "sigmastate-js/main" {
     static fromPointHex(value: HexString): GroupElement;
   }
 
-  export declare class AvlTree$ {
-    static fromDigest(value: HexString): AvlTree;
-  }
-
   export declare class SigmaProp {}
 
   export declare class SigmaProp$ {