diff --git a/packages/block/src/header.ts b/packages/block/src/header.ts
index 1b2cece6dc..b25ae7bf7d 100644
--- a/packages/block/src/header.ts
+++ b/packages/block/src/header.ts
@@ -28,7 +28,7 @@ import { keccak256 } from 'ethereum-cryptography/keccak.js'
 import { CLIQUE_EXTRA_SEAL, CLIQUE_EXTRA_VANITY } from './clique.js'
 import { fakeExponential, valuesArrayToHeaderData } from './helpers.js'
 
-import type { BlockHeaderBytes, BlockOptions, HeaderData, JsonHeader } from './types'
+import type { BlockHeaderBytes, BlockOptions, HeaderData, JsonHeader } from './types.js'
 import type { CliqueConfig } from '@ethereumjs/common'
 import type { BigIntLike } from '@ethereumjs/util'
 
diff --git a/packages/common/src/chains.ts b/packages/common/src/chains.ts
index 55dd26c2ee..e382c13d71 100644
--- a/packages/common/src/chains.ts
+++ b/packages/common/src/chains.ts
@@ -1,4 +1,4 @@
-import type { ChainConfig } from './types'
+import type { ChainConfig } from './types.js'
 
 type ChainsDict = {
   [key: string]: ChainConfig
diff --git a/packages/devp2p/src/ext/kbucket.ts b/packages/devp2p/src/ext/kbucket.ts
index c1ea35a5b4..38f25eeab2 100644
--- a/packages/devp2p/src/ext/kbucket.ts
+++ b/packages/devp2p/src/ext/kbucket.ts
@@ -35,7 +35,7 @@ OTHER DEALINGS IN THE SOFTWARE.
 import { equalsBytes, randomBytes } from '@ethereumjs/util'
 import { EventEmitter } from 'events'
 
-import type { Contact, KBucketOptions, PeerInfo } from '../types'
+import type { Contact, KBucketOptions, PeerInfo } from '../types.js'
 
 function createNode() {
   return { contacts: [], dontSplit: false, left: null, right: null }
diff --git a/packages/trie/src/util/asyncWalk.ts b/packages/trie/src/util/asyncWalk.ts
index daf9713e08..f23cc33fc0 100644
--- a/packages/trie/src/util/asyncWalk.ts
+++ b/packages/trie/src/util/asyncWalk.ts
@@ -4,8 +4,8 @@ import { equalsBytes, toHex } from 'ethereum-cryptography/utils'
 import { BranchNode } from '../node/branch.js'
 import { ExtensionNode } from '../node/extension.js'
 
-import type { Trie } from '../trie'
-import type { TrieNode } from '../types'
+import type { Trie } from '../trie.js'
+import type { TrieNode } from '../types.js'
 
 export type NodeFilter = (node: TrieNode, key: number[]) => Promise<boolean>
 export type OnFound = (node: TrieNode, key: number[]) => Promise<any>
diff --git a/packages/tx/src/capabilities/eip2718.ts b/packages/tx/src/capabilities/eip2718.ts
index 309cc3bc76..35cd27eeea 100644
--- a/packages/tx/src/capabilities/eip2718.ts
+++ b/packages/tx/src/capabilities/eip2718.ts
@@ -6,7 +6,7 @@ import { txTypeBytes } from '../util.js'
 
 import { errorMsg } from './legacy.js'
 
-import type { EIP2718CompatibleTx } from '../types'
+import type { EIP2718CompatibleTx } from '../types.js'
 import type { Input } from '@ethereumjs/rlp'
 
 export function getHashedMessageToSign(tx: EIP2718CompatibleTx): Uint8Array {
diff --git a/packages/verkle/src/types.ts b/packages/verkle/src/types.ts
index 845c2fb56a..596b5ad0ec 100644
--- a/packages/verkle/src/types.ts
+++ b/packages/verkle/src/types.ts
@@ -1,7 +1,7 @@
 import { utf8ToBytes } from '@ethereumjs/util'
 
-import type { VerkleNode } from './node'
-import type { WalkController } from './util/walkController'
+import type { VerkleNode } from './node/index.js'
+import type { WalkController } from './util/walkController.js'
 import type { DB } from '@ethereumjs/util'
 
 // Field representation of a commitment