diff --git a/.changeset/violet-forks-lick.md b/.changeset/violet-forks-lick.md
new file mode 100644
index 0000000..0bed5ef
--- /dev/null
+++ b/.changeset/violet-forks-lick.md
@@ -0,0 +1,5 @@
+---
+"@delvtech/drift": patch
+---
+
+Fixed bigint parsing bug in `createStubBlock`
diff --git a/packages/drift/src/adapter/utils/testing/createStubBlock.test.ts b/packages/drift/src/adapter/utils/testing/createStubBlock.test.ts
new file mode 100644
index 0000000..bd2e2d6
--- /dev/null
+++ b/packages/drift/src/adapter/utils/testing/createStubBlock.test.ts
@@ -0,0 +1,30 @@
+import type { Block } from "src/adapter/types/Block";
+import { createStubBlock } from "src/exports/testing";
+import { describe, expect, it } from "vitest";
+
+describe("createStubBlock", () => {
+  const hexRegex = /^0x[a-f0-9]*$/;
+
+  it("creates a stub block", () => {
+    const block = createStubBlock();
+    expect(block).toMatchObject({
+      extraData: expect.stringMatching(hexRegex),
+      gasLimit: expect.any(BigInt),
+      gasUsed: expect.any(BigInt),
+      hash: expect.stringMatching(hexRegex),
+      logsBloom: expect.stringMatching(hexRegex),
+      miner: expect.stringMatching(hexRegex),
+      mixHash: expect.stringMatching(hexRegex),
+      nonce: expect.any(BigInt),
+      number: expect.any(BigInt),
+      parentHash: expect.stringMatching(hexRegex),
+      receiptsRoot: expect.stringMatching(hexRegex),
+      sha3Uncles: expect.stringMatching(hexRegex),
+      size: expect.any(BigInt),
+      stateRoot: expect.stringMatching(hexRegex),
+      timestamp: expect.any(BigInt),
+      transactions: expect.any(Array),
+      transactionsRoot: expect.stringMatching(hexRegex),
+    } as Block);
+  });
+});
diff --git a/packages/drift/src/adapter/utils/testing/createStubBlock.ts b/packages/drift/src/adapter/utils/testing/createStubBlock.ts
index d0cc057..8643e08 100644
--- a/packages/drift/src/adapter/utils/testing/createStubBlock.ts
+++ b/packages/drift/src/adapter/utils/testing/createStubBlock.ts
@@ -22,7 +22,7 @@ export function createStubBlock(override: Partial<Block> = {}): Block {
     sha3Uncles: getRandomHex(),
     size: 100_000n,
     stateRoot: getRandomHex(),
-    timestamp: BigInt(Date.now() / 1000),
+    timestamp: BigInt(Date.now()) / 1000n,
     transactions: [],
     transactionsRoot: getRandomHex(),
     ...override,