diff --git a/example/create_db.ts b/example/create_db.ts
index 565b0a9..aac353c 100644
--- a/example/create_db.ts
+++ b/example/create_db.ts
@@ -1,4 +1,4 @@
-import { DB } from "https://deno.land/x/sqlite@v3.7.0/mod.ts";
+import { DB } from "https://deno.land/x/sqlite@v3.8/mod.ts";
 // Deno.removeSync("./example/db.sqlite");
 const db = new DB("./example/db.sqlite", { mode: "create" });
 db.execute(`
diff --git a/example/main.ts b/example/main.ts
index 006c510..1683752 100644
--- a/example/main.ts
+++ b/example/main.ts
@@ -1,5 +1,5 @@
-import { serve } from "https://deno.land/std@0.181.0/http/mod.ts";
-import { DB } from "https://deno.land/x/sqlite@v3.7.0/mod.ts";
+import { serve } from "https://deno.land/std@0.224.0/http/mod.ts";
+import { DB } from "https://deno.land/x/sqlite@v3.8/mod.ts";
 
 import { prepareLocalFile, prepareVirtualFile } from "../mod.ts";
 
diff --git a/src/memory_file.ts b/src/memory_file.ts
index dc71fa8..7e93dbb 100644
--- a/src/memory_file.ts
+++ b/src/memory_file.ts
@@ -1,9 +1,9 @@
-import { assert } from "https://deno.land/std@0.181.0/testing/asserts.ts";
-import { copy } from "https://deno.land/std@0.181.0/bytes/mod.ts";
+import { assert } from "https://deno.land/std@0.224.0/testing/asserts.ts";
+import { copy } from "https://deno.land/std@0.224.0/bytes/mod.ts";
 import {
   fromFileUrl,
   resolve,
-} from "https://deno.land/std@0.181.0/path/mod.ts";
+} from "https://deno.land/std@0.224.0/path/mod.ts";
 
 const defaultFileInfo = {
   atime: null,
diff --git a/src/memory_file_test.ts b/src/memory_file_test.ts
index b82abc0..e6a4bd9 100644
--- a/src/memory_file_test.ts
+++ b/src/memory_file_test.ts
@@ -1,11 +1,11 @@
 import {
   assertEquals,
   assertThrows,
-} from "https://deno.land/std@0.181.0/testing/asserts.ts";
+} from "https://deno.land/std@0.224.0/testing/asserts.ts";
 import {
   readAll,
   writeAll,
-} from "https://deno.land/std@0.181.0/streams/mod.ts";
+} from "https://deno.land/std@0.224.0/streams/mod.ts";
 import { InMemoryFsFile } from "./memory_file.ts";
 
 const targetFile = new URL("../tests/tmp.txt", import.meta.url);
diff --git a/src/polyfill_test.ts b/src/polyfill_test.ts
index ced5ece..4bcd200 100644
--- a/src/polyfill_test.ts
+++ b/src/polyfill_test.ts
@@ -1,4 +1,4 @@
-import { assertEquals } from "https://deno.land/std@0.181.0/testing/asserts.ts";
+import { assertEquals } from "https://deno.land/std@0.224.0/testing/asserts.ts";
 
 import { createDenoPolyfill } from "./polyfill.ts";
 import { InMemoryFsFile, pathFromURL, VirtualFile } from "./memory_file.ts";