diff --git a/.github/workflows/ci.generate.ts b/.github/workflows/ci.generate.ts
index 1aae3dea79..17c14a9b26 100755
--- a/.github/workflows/ci.generate.ts
+++ b/.github/workflows/ci.generate.ts
@@ -1,6 +1,6 @@
 #!/usr/bin/env -S deno run --allow-write=. --lock=./tools/deno.lock.json
 // Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
-import * as yaml from "https://deno.land/std@0.173.0/encoding/yaml.ts";
+import { stringify } from "jsr:@std/yaml@^0.221/stringify";
 
 // Bump this number when you want to purge the cache.
 // Note: the tools/release/01_bump_crate_versions.ts script will update this version
@@ -1091,7 +1091,7 @@ const ci = {
 
 export function generate() {
   let finalText = `# GENERATED BY ./ci.generate.ts -- DO NOT DIRECTLY EDIT\n\n`;
-  finalText += yaml.stringify(ci, {
+  finalText += stringify(ci, {
     noRefs: true,
     lineWidth: 10_000,
     noCompatMode: true,
diff --git a/README.md b/README.md
index f05e94b89b..102319f4f2 100644
--- a/README.md
+++ b/README.md
@@ -79,8 +79,8 @@ Learn more about writing and running Deno programs
 
 - **[Deno Docs](https://docs.deno.com)**: official guides and reference docs for
   the Deno runtime, [Deno Deploy](https://deno.com/deploy), and beyond.
-- **[Deno Standard Library](https://deno.land/std)**: officially supported
-  common utilities for Deno programs.
+- **[Deno Standard Library](https://jsr.io/@std)**: officially supported common
+  utilities for Deno programs.
 - **[deno.land/x](https://deno.land/x)**: registry for third-party Deno modules.
 - **[Developer Blog](https://deno.com/blog)**: Product updates, tutorials, and
   more from the Deno team.
diff --git a/cli/args/flags.rs b/cli/args/flags.rs
index 092b97a304..f76d0ca4e6 100644
--- a/cli/args/flags.rs
+++ b/cli/args/flags.rs
@@ -985,7 +985,8 @@ Docs: https://deno.land/manual@v",
   env!("CARGO_PKG_VERSION"),
   color_print::cstr!(
     "
-Modules: https://deno.land/std/ https://deno.land/x/
+Standard Library: https://jsr.io/@std
+Modules: https://jsr.io/ https://deno.land/x/
 Bugs: https://github.com/denoland/deno/issues
 
 To start the REPL:
@@ -1319,11 +1320,11 @@ Use an alternative bundler like \"deno_emit\", \"esbuild\" or \"rollup\" instead
 
 Output a single JavaScript file with all dependencies.
 
-  deno bundle https://deno.land/std/http/file_server.ts file_server.bundle.js
+  deno bundle jsr:@std/http/file-server file_server.bundle.js
 
 If no output file is given, the output is written to standard output:
 
-  deno bundle https://deno.land/std/http/file_server.ts",
+  deno bundle jsr:@std/http/file-server",
     )
     .defer(|cmd| {
       compile_args(cmd)
@@ -1351,7 +1352,7 @@ fn cache_subcommand() -> Command {
 Download and compile a module with all of its static dependencies and save
 them in the local cache, without running any code:
 
-  deno cache https://deno.land/std/http/file_server.ts
+  deno cache jsr:@std/http/file-server
 
 Future runs of this module will trigger no downloads or compilation unless
 --reload is specified.",
@@ -1372,7 +1373,7 @@ fn check_subcommand() -> Command {
       .long_about(
         "Download and type-check without execution.
 
-  deno check https://deno.land/std/http/file_server.ts
+  deno check jsr:@std/http/file-server
 
 Unless --reload is specified, this command will not re-download already cached dependencies.",
       )
@@ -1407,8 +1408,8 @@ fn compile_subcommand() -> Command {
     .long_about(
       "Compiles the given script into a self contained executable.
 
-  deno compile -A https://deno.land/std/http/file_server.ts
-  deno compile --output file_server https://deno.land/std/http/file_server.ts
+  deno compile -A jsr:@std/http/file-server
+  deno compile --output file_server jsr:@std/http/file-server
 
 Any flags passed which affect runtime behavior, such as '--unstable',
 '--allow-*', '--v8-flags', etc. are encoded into the output executable and
@@ -1900,7 +1901,7 @@ fn info_subcommand() -> Command {
 
 Get information about a module:
 
-  deno info https://deno.land/std/http/file_server.ts
+  deno info jsr:@std/http/file-server
 
 The following information is shown:
 
@@ -1949,12 +1950,12 @@ fn install_subcommand() -> Command {
     .long_about(
         "Installs a script as an executable in the installation root's bin directory.
 
-  deno install --global --allow-net --allow-read https://deno.land/std/http/file_server.ts
+  deno install --global --allow-net --allow-read jsr:@std/http/file-server
   deno install -g https://examples.deno.land/color-logging.ts
 
 To change the executable name, use -n/--name:
 
-  deno install -g --allow-net --allow-read -n serve https://deno.land/std/http/file_server.ts
+  deno install -g --allow-net --allow-read -n serve jsr:@std/http/file-server
 
 The executable name is inferred by default:
   - Attempt to take the file stem of the URL path. The above example would
@@ -1966,7 +1967,7 @@ The executable name is inferred by default:
 
 To change the installation root, use --root:
 
-  deno install -g --allow-net --allow-read --root /usr/local https://deno.land/std/http/file_server.ts
+  deno install -g --allow-net --allow-read --root /usr/local jsr:@std/http/file-server
 
 The installation root is determined, in order of precedence:
   - --root option
@@ -2243,15 +2244,15 @@ ability to spawn subprocesses.
 
 Grant all permissions:
 
-  deno run -A https://deno.land/std/http/file_server.ts
+  deno run -A jsr:@std/http/file-server
 
 Grant permission to read from disk and listen to network:
 
-  deno run --allow-read --allow-net https://deno.land/std/http/file_server.ts
+  deno run --allow-read --allow-net jsr:@std/http/file-server
 
 Grant permission to read allow-listed files from disk:
 
-  deno run --allow-read=/etc https://deno.land/std/http/file_server.ts
+  deno run --allow-read=/etc jsr:@std/http/file-server
 
 Specifying the filename '-' to read the file from stdin.
 
@@ -2506,7 +2507,7 @@ maps remote specifiers to the downloaded files.
 
 Remote modules and multiple modules may also be specified:
 
-  deno vendor main.ts test.deps.ts https://deno.land/std/path/mod.ts",
+  deno vendor main.ts test.deps.ts jsr:@std/path",
       )
     .defer(|cmd| cmd
       .arg(
@@ -3059,9 +3060,9 @@ fn reload_arg() -> Arg {
       "Reload source code cache (recompile TypeScript)
 --reload
   Reload everything
---reload=https://deno.land/std
+--reload=jsr:@std/http/file-server
   Reload only standard modules
---reload=https://deno.land/std/fs/utils.ts,https://deno.land/std/fmt/colors.ts
+--reload=jsr:@std/http/file-server,jsr:@std/assert/assert-equals
   Reloads specific modules
 --reload=npm:
   Reload all npm modules
@@ -6772,18 +6773,15 @@ mod tests {
 
   #[test]
   fn install() {
-    let r = flags_from_vec(svec![
-      "deno",
-      "install",
-      "https://deno.land/std/http/file_server.ts"
-    ]);
+    let r =
+      flags_from_vec(svec!["deno", "install", "jsr:@std/http/file-server"]);
     assert_eq!(
       r.unwrap(),
       Flags {
         subcommand: DenoSubcommand::Install(InstallFlags {
           kind: InstallKind::Global(InstallFlagsGlobal {
             name: None,
-            module_url: "https://deno.land/std/http/file_server.ts".to_string(),
+            module_url: "jsr:@std/http/file-server".to_string(),
             args: vec![],
             root: None,
             force: false,
@@ -6798,7 +6796,7 @@ mod tests {
       "deno",
       "install",
       "-g",
-      "https://deno.land/std/http/file_server.ts"
+      "jsr:@std/http/file-server"
     ]);
     assert_eq!(
       r.unwrap(),
@@ -6806,7 +6804,7 @@ mod tests {
         subcommand: DenoSubcommand::Install(InstallFlags {
           kind: InstallKind::Global(InstallFlagsGlobal {
             name: None,
-            module_url: "https://deno.land/std/http/file_server.ts".to_string(),
+            module_url: "jsr:@std/http/file-server".to_string(),
             args: vec![],
             root: None,
             force: false,
@@ -6821,14 +6819,14 @@ mod tests {
   #[test]
   fn install_with_flags() {
     #[rustfmt::skip]
-    let r = flags_from_vec(svec!["deno", "install", "--import-map", "import_map.json", "--no-remote", "--config", "tsconfig.json", "--no-check", "--unsafely-ignore-certificate-errors", "--reload", "--lock", "lock.json", "--lock-write", "--cert", "example.crt", "--cached-only", "--allow-read", "--allow-net", "--v8-flags=--help", "--seed", "1", "--inspect=127.0.0.1:9229", "--name", "file_server", "--root", "/foo", "--force", "--env=.example.env", "https://deno.land/std/http/file_server.ts", "foo", "bar"]);
+    let r = flags_from_vec(svec!["deno", "install", "--import-map", "import_map.json", "--no-remote", "--config", "tsconfig.json", "--no-check", "--unsafely-ignore-certificate-errors", "--reload", "--lock", "lock.json", "--lock-write", "--cert", "example.crt", "--cached-only", "--allow-read", "--allow-net", "--v8-flags=--help", "--seed", "1", "--inspect=127.0.0.1:9229", "--name", "file_server", "--root", "/foo", "--force", "--env=.example.env", "jsr:@std/http/file-server", "foo", "bar"]);
     assert_eq!(
       r.unwrap(),
       Flags {
         subcommand: DenoSubcommand::Install(InstallFlags {
           kind: InstallKind::Global(InstallFlagsGlobal {
             name: Some("file_server".to_string()),
-            module_url: "https://deno.land/std/http/file_server.ts".to_string(),
+            module_url: "jsr:@std/http/file-server".to_string(),
             args: svec!["foo", "bar"],
             root: Some("/foo".to_string()),
             force: true,
diff --git a/cli/args/mod.rs b/cli/args/mod.rs
index 8a65514bf5..2d0df3d3cc 100644
--- a/cli/args/mod.rs
+++ b/cli/args/mod.rs
@@ -194,8 +194,8 @@ pub enum CacheSetting {
   /// This is the equivalent of `--reload` in the CLI.
   ReloadAll,
   /// Only some cached resources should be used.  This is the equivalent of
-  /// `--reload=https://deno.land/std` or
-  /// `--reload=https://deno.land/std,https://deno.land/x/example`.
+  /// `--reload=jsr:@std/http/file-server` or
+  /// `--reload=jsr:@std/http/file-server,jsr:@std/assert/assert-equals`.
   ReloadSome(Vec<String>),
   /// The usability of a cached value is determined by analyzing the cached
   /// headers and other metadata associated with a cached response, reloading
diff --git a/cli/js/40_jupyter.js b/cli/js/40_jupyter.js
index 63af393a55..9fab1c4147 100644
--- a/cli/js/40_jupyter.js
+++ b/cli/js/40_jupyter.js
@@ -40,7 +40,7 @@ import { core, internals } from "ext:core/mod.js";
 
 const $display = Symbol.for("Jupyter.display");
 
-/** Escape copied from https://deno.land/std@0.192.0/html/entities.ts */
+/** Escape copied from https://jsr.io/@std/html/0.221.0/entities.ts */
 const rawToEntityEntries = [
   ["&", "&amp;"],
   ["<", "&lt;"],
diff --git a/cli/tsc/dts/lib.deno.ns.d.ts b/cli/tsc/dts/lib.deno.ns.d.ts
index cc73efbf90..4ec6873595 100644
--- a/cli/tsc/dts/lib.deno.ns.d.ts
+++ b/cli/tsc/dts/lib.deno.ns.d.ts
@@ -574,7 +574,7 @@ declare namespace Deno {
      * Examples:
      *
      * ```ts
-     * import { assertEquals } from "https://deno.land/std/assert/mod.ts";
+     * import { assertEquals } from "jsr:@std/assert";
      *
      * Deno.test({
      *   name: "inherit",
@@ -589,7 +589,7 @@ declare namespace Deno {
      * ```
      *
      * ```ts
-     * import { assertEquals } from "https://deno.land/std/assert/mod.ts";
+     * import { assertEquals } from "jsr:@std/assert";
      *
      * Deno.test({
      *   name: "true",
@@ -604,7 +604,7 @@ declare namespace Deno {
      * ```
      *
      * ```ts
-     * import { assertEquals } from "https://deno.land/std/assert/mod.ts";
+     * import { assertEquals } from "jsr:@std/assert";
      *
      * Deno.test({
      *   name: "false",
@@ -619,7 +619,7 @@ declare namespace Deno {
      * ```
      *
      * ```ts
-     * import { assertEquals } from "https://deno.land/std/assert/mod.ts";
+     * import { assertEquals } from "jsr:@std/assert";
      *
      * Deno.test({
      *   name: "localhost:8080",
@@ -848,7 +848,7 @@ declare namespace Deno {
    * `fn` can be async if required.
    *
    * ```ts
-   * import { assertEquals } from "https://deno.land/std/assert/mod.ts";
+   * import { assertEquals } from "jsr:@std/assert";
    *
    * Deno.test({
    *   name: "example test",
@@ -889,7 +889,7 @@ declare namespace Deno {
      * `fn` can be async if required.
      *
      * ```ts
-     * import { assertEquals } from "https://deno.land/std/assert/mod.ts";
+     * import { assertEquals } from "jsr:@std/assert";
      *
      * Deno.test({
      *   name: "example test",
@@ -926,7 +926,7 @@ declare namespace Deno {
      * `fn` can be async if required.
      *
      * ```ts
-     * import { assertEquals } from "https://deno.land/std/assert/mod.ts";
+     * import { assertEquals } from "jsr:@std/assert";
      *
      * Deno.test("My test description", () => {
      *   assertEquals("hello", "hello");
@@ -952,7 +952,7 @@ declare namespace Deno {
      * `fn` can be async if required. Declared function must have a name.
      *
      * ```ts
-     * import { assertEquals } from "https://deno.land/std/assert/mod.ts";
+     * import { assertEquals } from "jsr:@std/assert";
      *
      * Deno.test(function myTestName() {
      *   assertEquals("hello", "hello");
@@ -975,7 +975,7 @@ declare namespace Deno {
      * `fn` can be async if required.
      *
      * ```ts
-     * import {assert, fail, assertEquals} from "https://deno.land/std/assert/mod.ts";
+     * import { assert, fail, assertEquals } from "jsr:@std/assert";
      *
      * Deno.test("My test description", { permissions: { read: true } }, (): void => {
      *   assertEquals("hello", "hello");
@@ -1002,7 +1002,7 @@ declare namespace Deno {
      * `fn` can be async if required.
      *
      * ```ts
-     * import { assertEquals } from "https://deno.land/std/assert/mod.ts";
+     * import { assertEquals } from "jsr:@std/assert";
      *
      * Deno.test(
      *   {
@@ -1040,7 +1040,7 @@ declare namespace Deno {
      * `fn` can be async if required. Declared function must have a name.
      *
      * ```ts
-     * import { assertEquals } from "https://deno.land/std/assert/mod.ts";
+     * import { assertEquals } from "jsr:@std/assert";
      *
      * Deno.test(
      *   { permissions: { read: true } },
@@ -1263,7 +1263,7 @@ declare namespace Deno {
    * will await resolution to consider the test complete.
    *
    * ```ts
-   * import { assertEquals } from "https://deno.land/std/assert/mod.ts";
+   * import { assertEquals } from "jsr:@std/assert";
    *
    * Deno.bench({
    *   name: "example test",
@@ -1302,7 +1302,7 @@ declare namespace Deno {
    * will await resolution to consider the test complete.
    *
    * ```ts
-   * import { assertEquals } from "https://deno.land/std/assert/mod.ts";
+   * import { assertEquals } from "jsr:@std/assert";
    *
    * Deno.bench("My test description", () => {
    *   assertEquals("hello", "hello");
@@ -1330,7 +1330,7 @@ declare namespace Deno {
    * will await resolution to consider the test complete.
    *
    * ```ts
-   * import { assertEquals } from "https://deno.land/std/assert/mod.ts";
+   * import { assertEquals } from "jsr:@std/assert";
    *
    * Deno.bench(function myTestName() {
    *   assertEquals("hello", "hello");
@@ -1355,7 +1355,7 @@ declare namespace Deno {
    * will await resolution to consider the test complete.
    *
    * ```ts
-   * import { assertEquals } from "https://deno.land/std/assert/mod.ts";
+   * import { assertEquals } from "jsr:@std/assert";
    *
    * Deno.bench(
    *   "My test description",
@@ -1392,7 +1392,7 @@ declare namespace Deno {
    * will await resolution to consider the test complete.
    *
    * ```ts
-   * import { assertEquals } from "https://deno.land/std/assert/mod.ts";
+   * import { assertEquals } from "jsr:@std/assert";
    *
    * Deno.bench(
    *   { name: "My test description", permissions: { read: true } },
@@ -1426,7 +1426,7 @@ declare namespace Deno {
    * will await resolution to consider the test complete.
    *
    * ```ts
-   * import { assertEquals } from "https://deno.land/std/assert/mod.ts";
+   * import { assertEquals } from "jsr:@std/assert";
    *
    * Deno.bench(
    *   { permissions: { read: true } },
@@ -1679,10 +1679,8 @@ declare namespace Deno {
      * Implementations should not retain a reference to `p`.
      *
      * Use
-     * [`itereateReader`](https://deno.land/std/streams/iterate_reader.ts?s=iterateReader)
-     * from
-     * [`std/streams/iterate_reader.ts`](https://deno.land/std/streams/iterate_reader.ts)
-     * to turn a `Reader` into an {@linkcode AsyncIterator}.
+     * {@linkcode https://jsr.io/@std/io/doc/iterate-reader/~/iterateReader | iterateReader}
+     * to turn {@linkcode Reader} into an {@linkcode AsyncIterator}.
      */
     read(p: Uint8Array): Promise<number | null>;
   }
@@ -1717,10 +1715,8 @@ declare namespace Deno {
      * Implementations should not retain a reference to `p`.
      *
      * Use
-     * [`itereateReaderSync`](https://deno.land/std/streams/iterate_reader.ts?s=iterateReaderSync)
-     * from from
-     * [`std/streams/iterate_reader.ts`](https://deno.land/std/streams/iterate_reader.ts)
-     * to turn a `ReaderSync` into an {@linkcode Iterator}.
+     * {@linkcode https://jsr.io/@std/io/doc/iterate-reader/~/iterateReaderSync | iterateReaderSync}
+     * to turn {@linkcode ReaderSync} into an {@linkcode Iterator}.
      */
     readSync(p: Uint8Array): number | null;
   }
@@ -1743,9 +1739,8 @@ declare namespace Deno {
      * slice data, even temporarily.
      *
      * This function is one of the lowest
-     * level APIs and most users should not work with this directly, but rather use
-     * [`writeAll()`](https://deno.land/std/streams/write_all.ts?s=writeAll) from
-     * [`std/streams/write_all.ts`](https://deno.land/std/streams/write_all.ts)
+     * level APIs and most users should not work with this directly, but rather
+     * use {@linkcode https://jsr.io/@std/io/doc/write-all/~/writeAll | writeAll}
      * instead.
      *
      * Implementations should not retain a reference to `p`.
@@ -1978,7 +1973,7 @@ declare namespace Deno {
    *
    * This function is one of the lowest level APIs and most users should not
    * work with this directly, but rather use {@linkcode ReadableStream} and
-   * {@linkcode https://deno.land/std/streams/mod.ts?s=toArrayBuffer|toArrayBuffer}
+   * {@linkcode https://jsr.io/@std/streams/doc/to-array-buffer/~/toArrayBuffer | toArrayBuffer}
    * instead.
    *
    * **It is not guaranteed that the full buffer will be read in a single call.**
@@ -2010,7 +2005,7 @@ declare namespace Deno {
    *
    * This function is one of the lowest level APIs and most users should not
    * work with this directly, but rather use {@linkcode ReadableStream} and
-   * {@linkcode https://deno.land/std/streams/mod.ts?s=toArrayBuffer|toArrayBuffer}
+   * {@linkcode https://jsr.io/@std/streams/doc/to-array-buffer/~/toArrayBuffer | toArrayBuffer}
    * instead.
    *
    * **It is not guaranteed that the full buffer will be read in a single
@@ -2549,7 +2544,7 @@ declare namespace Deno {
     /** Resolves to a {@linkcode Deno.FileInfo} for the file.
      *
      * ```ts
-     * import { assert } from "https://deno.land/std/assert/mod.ts";
+     * import { assert } from "jsr:@std/assert";
      *
      * using file = await Deno.open("hello.txt");
      * const fileInfo = await file.stat();
@@ -2560,7 +2555,7 @@ declare namespace Deno {
     /** Synchronously returns a {@linkcode Deno.FileInfo} for the file.
      *
      * ```ts
-     * import { assert } from "https://deno.land/std/assert/mod.ts";
+     * import { assert } from "jsr:@std/assert";
      *
      * using file = Deno.openSync("hello.txt")
      * const fileInfo = file.statSync();
@@ -3809,7 +3804,7 @@ declare namespace Deno {
    * of what it points to.
    *
    * ```ts
-   * import { assert } from "https://deno.land/std/assert/mod.ts";
+   * import { assert } from "jsr:@std/assert";
    * const fileInfo = await Deno.lstat("hello.txt");
    * assert(fileInfo.isFile);
    * ```
@@ -3826,7 +3821,7 @@ declare namespace Deno {
    * returned instead of what it points to.
    *
    * ```ts
-   * import { assert } from "https://deno.land/std/assert/mod.ts";
+   * import { assert } from "jsr:@std/assert";
    * const fileInfo = Deno.lstatSync("hello.txt");
    * assert(fileInfo.isFile);
    * ```
@@ -3842,7 +3837,7 @@ declare namespace Deno {
    * always follow symlinks.
    *
    * ```ts
-   * import { assert } from "https://deno.land/std/assert/mod.ts";
+   * import { assert } from "jsr:@std/assert";
    * const fileInfo = await Deno.stat("hello.txt");
    * assert(fileInfo.isFile);
    * ```
@@ -3858,7 +3853,7 @@ declare namespace Deno {
    * `path`. Will always follow symlinks.
    *
    * ```ts
-   * import { assert } from "https://deno.land/std/assert/mod.ts";
+   * import { assert } from "jsr:@std/assert";
    * const fileInfo = Deno.statSync("hello.txt");
    * assert(fileInfo.isFile);
    * ```
@@ -5111,7 +5106,7 @@ declare namespace Deno {
     /** Revokes a permission, and resolves to the state of the permission.
      *
      * ```ts
-     * import { assert } from "https://deno.land/std/assert/mod.ts";
+     * import { assert } from "jsr:@std/assert";
      *
      * const status = await Deno.permissions.revoke({ name: "run" });
      * assert(status.state !== "granted")
@@ -5122,7 +5117,7 @@ declare namespace Deno {
     /** Revokes a permission, and returns the state of the permission.
      *
      * ```ts
-     * import { assert } from "https://deno.land/std/assert/mod.ts";
+     * import { assert } from "jsr:@std/assert";
      *
      * const status = Deno.permissions.revokeSync({ name: "run" });
      * assert(status.state !== "granted")
@@ -5200,14 +5195,14 @@ declare namespace Deno {
    * ### Revoking
    *
    * ```ts
-   * import { assert } from "https://deno.land/std/assert/mod.ts";
+   * import { assert } from "jsr:@std/assert";
    *
    * const status = await Deno.permissions.revoke({ name: "run" });
    * assert(status.state !== "granted")
    * ```
    *
    * ```ts
-   * import { assert } from "https://deno.land/std/assert/mod.ts";
+   * import { assert } from "jsr:@std/assert";
    *
    * const status = Deno.permissions.revokeSync({ name: "run" });
    * assert(status.state !== "granted")
@@ -5313,9 +5308,9 @@ declare namespace Deno {
    * [ "Sushi" ]
    * ```
    *
-   * If you are looking for a structured way to parse arguments, there is the
-   * [`std/flags`](https://deno.land/std/flags) module as part of the Deno
-   * standard library.
+   * If you are looking for a structured way to parse arguments, there is
+   * [`parseArgs()`](https://jsr.io/@std/cli/doc/parse-args/~/parseArgs) from
+   * the Deno Standard Library.
    *
    * @category Runtime Environment
    */
@@ -5535,7 +5530,7 @@ declare namespace Deno {
    * Returns a `Deno.FileInfo` for the given file stream.
    *
    * ```ts
-   * import { assert } from "https://deno.land/std/assert/mod.ts";
+   * import { assert } from "jsr:@std/assert";
    *
    * const file = await Deno.open("file.txt", { read: true });
    * const fileInfo = await Deno.fstat(file.rid);
@@ -5555,7 +5550,7 @@ declare namespace Deno {
    * stream.
    *
    * ```ts
-   * import { assert } from "https://deno.land/std/assert/mod.ts";
+   * import { assert } from "jsr:@std/assert";
    *
    * const file = Deno.openSync("file.txt", { read: true });
    * const fileInfo = Deno.fstatSync(file.rid);
diff --git a/ext/io/12_io.js b/ext/io/12_io.js
index f73cb57a67..c43117cef2 100644
--- a/ext/io/12_io.js
+++ b/ext/io/12_io.js
@@ -40,7 +40,7 @@ async function copy(
   internals.warnOnDeprecatedApi(
     "Deno.copy()",
     new Error().stack,
-    "Use `copy()` from `https://deno.land/std/io/copy.ts` instead.",
+    "Use `copy()` from `https://jsr.io/@std/io/doc/copy/~` instead.",
   );
   let n = 0;
   const bufSize = options?.bufSize ?? DEFAULT_BUFFER_SIZE;
diff --git a/runtime/js/13_buffer.js b/runtime/js/13_buffer.js
index cac1a66944..ae57fcb163 100644
--- a/runtime/js/13_buffer.js
+++ b/runtime/js/13_buffer.js
@@ -48,7 +48,7 @@ class Buffer {
     internals.warnOnDeprecatedApi(
       "new Deno.Buffer()",
       new Error().stack,
-      "Use `Buffer` from `https://deno.land/std/io/buffer.ts` instead.",
+      "Use `Buffer` from `https://jsr.io/@std/io/doc/buffer/~` instead.",
     );
     if (ab == null) {
       this.#buf = new Uint8Array(0);
@@ -238,7 +238,7 @@ async function readAll(r) {
   internals.warnOnDeprecatedApi(
     "Deno.readAll()",
     new Error().stack,
-    "Use `readAll()` from `https://deno.land/std/io/read_all.ts` instead.",
+    "Use `readAll()` from `https://jsr.io/@std/io/doc/read-all/~` instead.",
   );
   const buf = new Buffer();
   await buf.readFrom(r);
@@ -249,7 +249,7 @@ function readAllSync(r) {
   internals.warnOnDeprecatedApi(
     "Deno.readAllSync()",
     new Error().stack,
-    "Use `readAllSync()` from `https://deno.land/std/io/read_all.ts` instead.",
+    "Use `readAllSync()` from `https://jsr.io/@std/io/doc/read-all/~` instead.",
   );
   const buf = new Buffer();
   buf.readFromSync(r);
@@ -260,7 +260,7 @@ async function writeAll(w, arr) {
   internals.warnOnDeprecatedApi(
     "Deno.writeAll()",
     new Error().stack,
-    "Use `writeAll()` from `https://deno.land/std/io/write_all.ts` instead.",
+    "Use `writeAll()` from `https://jsr.io/@std/io/doc/write-all/~` instead.",
   );
   let nwritten = 0;
   while (nwritten < arr.length) {
@@ -272,7 +272,7 @@ function writeAllSync(w, arr) {
   internals.warnOnDeprecatedApi(
     "Deno.writeAllSync()",
     new Error().stack,
-    "Use `writeAllSync()` from `https://deno.land/std/io/write_all.ts` instead.",
+    "Use `writeAllSync()` from `https://jsr.io/@std/io/doc/write-all/~` instead.",
   );
   let nwritten = 0;
   while (nwritten < arr.length) {
diff --git a/tests/integration/check_tests.rs b/tests/integration/check_tests.rs
index e97a401415..72fb2d9b72 100644
--- a/tests/integration/check_tests.rs
+++ b/tests/integration/check_tests.rs
@@ -215,7 +215,7 @@ fn reload_flag() {
 
 #[test]
 fn typecheck_declarations_ns() {
-  let context = TestContext::default();
+  let context = TestContextBuilder::for_jsr().build();
   let args = vec![
     "test".to_string(),
     "--doc".to_string(),
@@ -224,7 +224,12 @@ fn typecheck_declarations_ns() {
       .to_string_lossy()
       .into_owned(),
   ];
-  let output = context.new_command().args_vec(args).split_output().run();
+  let output = context
+    .new_command()
+    .args_vec(args)
+    .envs(util::env_vars_for_jsr_tests())
+    .split_output()
+    .run();
 
   println!("stdout: {}", output.stdout());
   println!("stderr: {}", output.stderr());
diff --git a/tests/integration/lsp_tests.rs b/tests/integration/lsp_tests.rs
index 96fb9507ab..92a53a8b27 100644
--- a/tests/integration/lsp_tests.rs
+++ b/tests/integration/lsp_tests.rs
@@ -1400,7 +1400,7 @@ fn lsp_hover() {
           "language": "typescript",
           "value": "const Deno.args: string[]"
         },
-        "Returns the script arguments to the program.\n\nGive the following command line invocation of Deno:\n\n```sh\ndeno run --allow-read https://examples.deno.land/command-line-arguments.ts Sushi\n```\n\nThen `Deno.args` will contain:\n\n```ts\n[ \"Sushi\" ]\n```\n\nIf you are looking for a structured way to parse arguments, there is the\n[`std/flags`](https://deno.land/std/flags) module as part of the Deno\nstandard library.",
+        "Returns the script arguments to the program.\n\nGive the following command line invocation of Deno:\n\n```sh\ndeno run --allow-read https://examples.deno.land/command-line-arguments.ts Sushi\n```\n\nThen `Deno.args` will contain:\n\n```ts\n[ \"Sushi\" ]\n```\n\nIf you are looking for a structured way to parse arguments, there is\n[`parseArgs()`](https://jsr.io/@std/cli/doc/parse-args/~/parseArgs) from\nthe Deno Standard Library.",
         "\n\n*@category* - Runtime Environment",
       ],
       "range": {
diff --git a/tests/testdata/bench/multiple_group.ts b/tests/testdata/bench/multiple_group.ts
index 69e73a7f25..165b5e201f 100644
--- a/tests/testdata/bench/multiple_group.ts
+++ b/tests/testdata/bench/multiple_group.ts
@@ -4,12 +4,12 @@ Deno.bench("noop2", { group: "noop", baseline: true }, () => {});
 Deno.bench("noop3", { group: "url" }, () => {});
 
 Deno.bench("parse url 2x", { group: "url", baseline: true }, () => {
-  new URL("https://deno.land/std/http/server.ts");
-  new URL("https://deno.land/std/http/server.ts");
+  new URL("https://jsr.io/@std/http/0.221.0/file_server.ts");
+  new URL("https://jsr.io/@std/http/0.221.0/file_server.ts");
 });
 
 Deno.bench("parse url 200x", { group: "url" }, () => {
   for (let i = 0; i < 200; i++) {
-    new URL("https://deno.land/std/http/server.ts");
+    new URL("https://jsr.io/@std/http/0.221.0/file_server.ts");
   }
 });
diff --git a/tests/testdata/jsr/registry/@std/assert/0.220.1/assert.ts b/tests/testdata/jsr/registry/@std/assert/0.220.1/assert.ts
new file mode 100644
index 0000000000..8c20c347ac
--- /dev/null
+++ b/tests/testdata/jsr/registry/@std/assert/0.220.1/assert.ts
@@ -0,0 +1,4 @@
+// deno-lint-ignore-file
+export function assert(expr: unknown) {
+  return true;
+}
diff --git a/tests/testdata/jsr/registry/@std/assert/0.220.1/fail.ts b/tests/testdata/jsr/registry/@std/assert/0.220.1/fail.ts
new file mode 100644
index 0000000000..6c21edda54
--- /dev/null
+++ b/tests/testdata/jsr/registry/@std/assert/0.220.1/fail.ts
@@ -0,0 +1,5 @@
+// deno-lint-ignore-file
+
+export function fail() {
+  return true;
+}
diff --git a/tests/testdata/jsr/registry/@std/assert/0.220.1/mod.ts b/tests/testdata/jsr/registry/@std/assert/0.220.1/mod.ts
index 2d7913a024..fdcb56c8cf 100644
--- a/tests/testdata/jsr/registry/@std/assert/0.220.1/mod.ts
+++ b/tests/testdata/jsr/registry/@std/assert/0.220.1/mod.ts
@@ -18,3 +18,5 @@
  */
 
 export * from "./assert_equals.ts";
+export * from "./assert.ts";
+export * from "./fail.ts";
diff --git a/tests/testdata/jsr/registry/@std/assert/0.220.1_meta.json b/tests/testdata/jsr/registry/@std/assert/0.220.1_meta.json
index 6779281672..3ca2db93a6 100644
--- a/tests/testdata/jsr/registry/@std/assert/0.220.1_meta.json
+++ b/tests/testdata/jsr/registry/@std/assert/0.220.1_meta.json
@@ -1,6 +1,8 @@
 {
   "exports": {
     ".": "./mod.ts",
-    "./assert_equals": "./assert_equals.ts"
+    "./assert": "./assert.ts",
+    "./assert-equals": "./assert-equals.ts",
+    "./fail": "./fail.ts"
   }
 }
diff --git a/tests/testdata/module_graph/file_tests-checkwithconfig.ts b/tests/testdata/module_graph/file_tests-checkwithconfig.ts
index e7af5fa191..6628a1b63c 100644
--- a/tests/testdata/module_graph/file_tests-checkwithconfig.ts
+++ b/tests/testdata/module_graph/file_tests-checkwithconfig.ts
@@ -1,4 +1,4 @@
-import { ServerRequest } from "https://deno.land/std/http/server.ts";
+import { ServerRequest } from "jsr:@std/http/server";
 
 export default (req: ServerRequest) => {
   req.respond({ body: `Hello, from Deno v${Deno.version.deno}!` });