diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index e0fde122..ad513dca 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -10,16 +10,18 @@ jobs:
         steps:
             - name: Checkout code
               uses: nschloe/action-cached-lfs-checkout@v1
+            - name: Install just command runner
+              uses: extractions/setup-just@v2
+              with:
+                  just-version: "1.x"
             - name: Setup Node.js
               uses: ./.github/actions/setup-nodejs
             - name: Check source code
-              run: |
-                  npm run lint
-                  npm run copy:paste:detector
+              run: just lint
             - name: Compile source code
-              run: npm run compile
+              run: just compile
             - name: Run unit tests
-              run: npm run test:unit:coverage
+              run: just test-unit-coverage
             - name: Upload code coverage artifact
               uses: actions/upload-artifact@v4
               with:
diff --git a/justfile b/justfile
new file mode 100644
index 00000000..296c3530
--- /dev/null
+++ b/justfile
@@ -0,0 +1,36 @@
+default: develop
+
+astro-sync:
+	npx astro sync
+
+astro-check: astro-sync
+	npx astro check
+
+prettier-check:
+	npx prettier --check source
+
+eslint:
+	npx eslint . --ext ".ts"
+
+copy-paste-detection:
+	npx jscpd source
+
+lint: astro-check prettier-check eslint copy-paste-detection
+
+@compile:
+	npx tsc
+
+@develop $FORCE_COLOR="1":
+	npx tsx ./source/start-develop.ts
+
+@build:
+	npx astro build
+
+@preview:
+	npx astro preview
+
+@test-unit: compile
+	npx ava
+
+@test-unit-coverage: compile
+	npx c8 ava
diff --git a/package.json b/package.json
index 63f05c44..b4478c16 100644
--- a/package.json
+++ b/package.json
@@ -12,17 +12,7 @@
 	"volta": {
 		"node": "22.2.0"
 	},
-	"scripts": {
-		"lint": "astro sync && astro check && eslint . --ext '.ts' && prettier --check source",
-		"copy:paste:detector": "jscpd source",
-		"compile": "tsc",
-		"develop": "FORCE_COLOR='1' tsx ./source/start-develop.ts",
-		"build": "astro build",
-		"preview": "astro preview",
-		"pretest:unit": "npm run compile",
-		"test:unit": "ava",
-		"test:unit:coverage": "c8 npm run test:unit"
-	},
+	"scripts": {},
 	"dependencies": {
 		"@astrojs/node": "8.3.0",
 		"@astrojs/vue": "4.4.0",