diff --git a/src/hooks/after-create.test.ts b/src/hooks/after-create.test.ts
index da80a3d..8747716 100644
--- a/src/hooks/after-create.test.ts
+++ b/src/hooks/after-create.test.ts
@@ -21,14 +21,14 @@ name = "%%PROJECT_NAME%%-staging"
         })
         const { readFileSync, writeFileSync } = await import('fs')
 
-        const projectName = 'test-project'
+        const projectName = 'test-projectNAME+123'
         const directoryPath = './tmp'
         const wranglerPath = join(directoryPath, 'wrangler.toml')
         const replaced = `
-name = "${projectName}"
+name = "test-projectname-123"
 
 [env.staging]
-name = "${projectName}-staging"
+name = "test-projectname-123-staging"
     `.trim()
         afterCreateHook.applyHook('cloudflare-workers', {
           projectName,
diff --git a/src/hooks/after-create.ts b/src/hooks/after-create.ts
index be33f8f..aeea672 100644
--- a/src/hooks/after-create.ts
+++ b/src/hooks/after-create.ts
@@ -9,7 +9,8 @@ afterCreateHook.addHook(
   ({ projectName, directoryPath }) => {
     const wranglerPath = path.join(directoryPath, 'wrangler.toml')
     const wrangler = readFileSync(wranglerPath, 'utf-8')
-    const rewritten = wrangler.replaceAll(PROJECT_NAME, projectName)
+    const convertProjectName = projectName.toLowerCase().replaceAll(/[^a-z0-9\-_]/gm, "-")
+    const rewritten = wrangler.replaceAll(PROJECT_NAME, convertProjectName)
     writeFileSync(wranglerPath, rewritten)
   }
 )