diff --git a/packages/sdk/src/encryption/RSAKeyPair.ts b/packages/sdk/src/encryption/RSAKeyPair.ts
index 6c62fcd2dc..705d9ec5d2 100644
--- a/packages/sdk/src/encryption/RSAKeyPair.ts
+++ b/packages/sdk/src/encryption/RSAKeyPair.ts
@@ -1,3 +1,10 @@
+/**
+ * @todo This file contains code for both browser and Node.js environments. Consider
+ * making it environment-specific (using separate files or conditional exports), and
+ * remove the following "dom" lib reference when done.
+ */
+/// <reference lib="dom" />
+
 import crypto from 'crypto'
 import { promisify } from 'util'
 import { KeyExchangeKeyPair } from './KeyExchangeKeyPair'
diff --git a/packages/sdk/src/identity/ECDSAKeyPairIdentity.ts b/packages/sdk/src/identity/ECDSAKeyPairIdentity.ts
index 312122f28f..74d11041ea 100644
--- a/packages/sdk/src/identity/ECDSAKeyPairIdentity.ts
+++ b/packages/sdk/src/identity/ECDSAKeyPairIdentity.ts
@@ -2,6 +2,7 @@ import { hexToBinary, EcdsaSecp256r1 } from '@streamr/utils'
 import { KeyPairIdentity } from './KeyPairIdentity'
 import { SignatureType } from '@streamr/trackerless-network'
 import { StrictStreamrClientConfig } from '../Config'
+import type { webcrypto } from 'crypto'
 
 const signingUtil = new EcdsaSecp256r1()
 
@@ -10,7 +11,7 @@ const signingUtil = new EcdsaSecp256r1()
  */
 export class ECDSAKeyPairIdentity extends KeyPairIdentity {
 
-    private cachedJWK: JsonWebKey | undefined
+    private cachedJWK: webcrypto.JsonWebKey | undefined
 
     assertValidKeyPair(): void {
         signingUtil.assertValidKeyPair(this.publicKey, this.privateKey)
diff --git a/packages/sdk/tsconfig.jest.json b/packages/sdk/tsconfig.jest.json
index fd6c3ce89a..5ba42ad9b4 100644
--- a/packages/sdk/tsconfig.jest.json
+++ b/packages/sdk/tsconfig.jest.json
@@ -1,7 +1,7 @@
 {
   "extends": "../../tsconfig.jest.json",
   "compilerOptions": {
-    "lib": ["es2021", "dom"],
+    "lib": ["es2021"],
     "experimentalDecorators": true,
     "emitDecoratorMetadata": true,
     "noImplicitOverride": false
diff --git a/packages/sdk/tsconfig.json b/packages/sdk/tsconfig.json
index 52d07bdad9..ba668d3702 100644
--- a/packages/sdk/tsconfig.json
+++ b/packages/sdk/tsconfig.json
@@ -3,7 +3,7 @@
   "compilerOptions": {
     "outDir": "dist",
     "declarationDir": "dist/types",
-    "lib": ["es2021", "dom"],
+    "lib": ["es2021"],
     "experimentalDecorators": true,
     "emitDecoratorMetadata": true,
     "noImplicitOverride": false