diff --git a/tests/main.test.ts b/tests/main.test.ts
index 63adaf2..7ab45a2 100644
--- a/tests/main.test.ts
+++ b/tests/main.test.ts
@@ -1,5 +1,5 @@
-import * as ast from 'jsr:@std/assert';
-import { describe, it } from 'jsr:@std/testing/bdd';
+import * as ast from 'jsr:@std/assert@1';
+import { describe, it } from 'jsr:@std/testing@1/bdd';
 
 import {
     main,
diff --git a/tests/pbkdf2.test.ts b/tests/pbkdf2.test.ts
index e4cdf20..4b0f41e 100644
--- a/tests/pbkdf2.test.ts
+++ b/tests/pbkdf2.test.ts
@@ -1,6 +1,6 @@
-import * as ast from 'jsr:@std/assert';
-import * as hex from 'jsr:@std/encoding/hex';
-import { describe, it } from 'jsr:@std/testing/bdd';
+import * as ast from 'jsr:@std/assert@1';
+import * as hex from 'jsr:@std/encoding@1/hex';
+import { describe, it } from 'jsr:@std/testing@1/bdd';
 
 import { encode } from '../src/utils.ts';