diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index c9550b1..2dc013a 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -21,11 +21,10 @@ jobs:
     - name: Run linter
       if: matrix.os == 'ubuntu-latest'
       run: |
-        deno fmt --check
-        deno lint
+        deno task lint
     - name: Check mod.ts
       run: |
-        deno check mod.ts
+        deno task typecheck
     - name: Run tests
       run: |
-        deno test --allow-read --allow-run --allow-env=HOME --doc --import-map=import_map.test.json
+        deno task test
diff --git a/deno.json b/deno.json
new file mode 100644
index 0000000..61bd43b
--- /dev/null
+++ b/deno.json
@@ -0,0 +1,7 @@
+{
+  "tasks": {
+    "lint": "deno fmt --check && deno lint",
+    "typecheck": "deno check mod.ts",
+    "test": "deno test --allow-read --allow-run --allow-env=HOME --doc --import-map=import_map.test.json"
+  }
+}