diff --git a/is_test.ts b/is_test.ts
index 70a03a4..e1839ab 100644
--- a/is_test.ts
+++ b/is_test.ts
@@ -1,11 +1,11 @@
 import {
   assertEquals,
   assertStrictEquals,
-} from "https://deno.land/std@0.192.0/testing/asserts.ts";
+} from "https://deno.land/std@0.200.0/testing/asserts.ts";
 import type {
   AssertTrue,
   IsExact,
-} from "https://deno.land/std@0.192.0/testing/types.ts";
+} from "https://deno.land/std@0.200.0/testing/types.ts";
 import is, {
   isAllOf,
   isArray,
diff --git a/scripts/build_npm.ts b/scripts/build_npm.ts
index 20bd4cb..b2d8231 100644
--- a/scripts/build_npm.ts
+++ b/scripts/build_npm.ts
@@ -1,4 +1,4 @@
-import { build, emptyDir } from "https://deno.land/x/dnt@0.37.0/mod.ts";
+import { build, emptyDir } from "https://deno.land/x/dnt@0.38.1/mod.ts";
 
 const name = "unknownutil";
 const version = Deno.args[0];
diff --git a/util_test.ts b/util_test.ts
index 513ec39..4100123 100644
--- a/util_test.ts
+++ b/util_test.ts
@@ -1,7 +1,7 @@
 import {
   assertStrictEquals,
   assertThrows,
-} from "https://deno.land/std@0.192.0/testing/asserts.ts";
+} from "https://deno.land/std@0.200.0/testing/asserts.ts";
 import { assert, AssertError, ensure, maybe } from "./util.ts";
 
 const x: unknown = Symbol("x");