diff --git a/.vscode/launch.json b/.vscode/launch.json
index a1f2b2e..269d8ed 100644
--- a/.vscode/launch.json
+++ b/.vscode/launch.json
@@ -1,24 +1,24 @@
 {
-    // Utilisez IntelliSense pour en savoir plus sur les attributs possibles.
-    // Pointez pour afficher la description des attributs existants.
-    // Pour plus d'informations, visitez : https://go.microsoft.com/fwlink/?linkid=830387
-    "version": "0.2.0",
-    "configurations": [
-        {
-            "request": "launch",
-            "name": "Launch Program",
-            "type": "node",
-            "program": "${workspaceFolder}/mod.ts",
-            "cwd": "${workspaceFolder}",
-            "env": {},
-            "runtimeExecutable": "/usr/local/bin/deno",
-            "runtimeArgs": [
-                "run",
-                "--unstable",
-                "--inspect-wait",
-                "--allow-all"
-            ],
-            "attachSimplePort": 9229
-        }
-    ]
-}
\ No newline at end of file
+  // Utilisez IntelliSense pour en savoir plus sur les attributs possibles.
+  // Pointez pour afficher la description des attributs existants.
+  // Pour plus d'informations, visitez : https://go.microsoft.com/fwlink/?linkid=830387
+  "version": "0.2.0",
+  "configurations": [
+    {
+      "request": "launch",
+      "name": "Launch Program",
+      "type": "node",
+      "program": "${workspaceFolder}/mod.ts",
+      "cwd": "${workspaceFolder}",
+      "env": {},
+      "runtimeExecutable": "/usr/local/bin/deno",
+      "runtimeArgs": [
+        "run",
+        "--unstable",
+        "--inspect-wait",
+        "--allow-all"
+      ],
+      "attachSimplePort": 9229
+    }
+  ]
+}
diff --git a/deno.json b/deno.json
index 161cff0..c5cf8cc 100644
--- a/deno.json
+++ b/deno.json
@@ -8,6 +8,7 @@
     "fmt:check": "deno fmt --check",
     "fmt": "deno fmt",
     "lint": "deno lint --unstable",
-    "fileserver": "deno run --allow-read --allow-net https://deno.land/std@0.136.0/http/file_server.ts ."
-  }
+    "fileserver": "deno run --allow-read --allow-net jsr:@std/http/file-server ."
+  },
+  "unstable": ["cron", "kv"]
 }
diff --git a/deno.lock b/deno.lock
index f01cac0..d1d3377 100644
--- a/deno.lock
+++ b/deno.lock
@@ -1,8 +1,18 @@
 {
-  "version": "2",
-  "remote": {
-    "https://deno.land/std@0.123.0/fmt/colors.ts": "8368ddf2d48dfe413ffd04cdbb7ae6a1009cf0dccc9c7ff1d76259d9c61a0621",
-    "https://deno.land/std@0.123.0/testing/_diff.ts": "e6a10d2aca8d6c27a9c5b8a2dbbf64353874730af539707b5b39d4128140642d",
-    "https://deno.land/std@0.123.0/testing/asserts.ts": "437505f8490a4d261836d822d3418bdd2b152007bdc9b01bdc339bf4b88983a2"
+  "version": "4",
+  "specifiers": {
+    "jsr:@std/assert@*": "1.0.6",
+    "jsr:@std/internal@^1.0.4": "1.0.4"
+  },
+  "jsr": {
+    "@std/assert@1.0.6": {
+      "integrity": "1904c05806a25d94fe791d6d883b685c9e2dcd60e4f9fc30f4fc5cf010c72207",
+      "dependencies": [
+        "jsr:@std/internal"
+      ]
+    },
+    "@std/internal@1.0.4": {
+      "integrity": "62e8e4911527e5e4f307741a795c0b0a9e6958d0b3790716ae71ce085f755422"
+    }
   }
 }
diff --git a/mod.test.ts b/mod.test.ts
index d8b2c14..230dd41 100644
--- a/mod.test.ts
+++ b/mod.test.ts
@@ -1,4 +1,4 @@
-import { assertEquals } from "https://deno.land/std@0.123.0/testing/asserts.ts";
+import { assertEquals } from "jsr:@std/assert";
 import { upperString } from "./mod.ts";
 
 // Compact form: name and function