diff --git a/.github/README.md b/.github/README.md
index 1f688e2..cdf14ff 100644
--- a/.github/README.md
+++ b/.github/README.md
@@ -33,13 +33,17 @@ OPML Generator has 2 ways to convert TOML to OPML.
    git clone https://github.com/5ouma/opml-generator.git
    ```
 
-3. Run Deno Task
+3. Set the environment variables if you prefer
+
+   > [🌍 Environment Variables](#-environment-variables)
+
+4. Run Deno Task
 
    ```shell
    deno task gen
    ```
 
-4. Outputs are stored in the `outputs` directory separated by `lists`
+5. Outputs are stored in the `outputs` directory separated by `lists`
 
 <br />
 
@@ -50,23 +54,31 @@ OPML Generator has 2 ways to convert TOML to OPML.
    - includes [`feeds.toml`](./assets/example/feeds.toml)
    - for outputs
 
-2. Create [a Personal Access Token] with the `Gist` permission
+2. [Fork this repository](https://github.com/5ouma/opml-generator/fork)
 
-3. [Fork this repository](https://github.com/5ouma/opml-generator/fork)
+3. Add Actions secrets
+   from `Settings > Secrets and variables | Actions` in the sidebar
 
-4. Add Actions secrets
-   from `Settings > Secrets and variables | Actions` in the sidebar:
+   > [🌍 Environment Variables](#-environment-variables)
 
-   - `TOML_GIST_ID`: Gist ID for [`feeds.toml`](./assets/example/feeds.toml)
-   - `OPML_GIST_ID`: Gist ID for outputs
-   - `TOKEN`: Personal Access Token
-
-5. Enable GitHub Actions by checking `Allow all actions and reusable workflows`
+4. Enable GitHub Actions by checking `Allow all actions and reusable workflows`
    from `Settings > Actions | General` in the sidebar
 
 🎉 Automatically update every 0 a.m. UTC
 
-[a Personal Access Token]: https://github.com/settings/tokens
+<br /><br />
+
+## 🌍 Environment Variables
+
+|      Name       |        Description         | GitHub Actions only |
+| :-------------: | :------------------------: | :-----------------: |
+| `TOML_GIST_ID`  | Gist ID for [`feeds.toml`] |        true         |
+| `OPML_GIST_ID`  |    Gist ID for outputs     |        true         |
+|     `TOKEN`     |  [Personal Access Token]   |        true         |
+| `NITTER_DOMAIN` |     Nitter RSS domain      |        false        |
+
+[`feeds.toml`]: ./assets/example/feeds.toml
+[Personal Access Token]: https://github.com/settings/tokens/new?description=OPML%20Generator&scopes=gist
 
 <br /><br />
 
diff --git a/.github/assets/example/feeds.toml b/.github/assets/example/feeds.toml
index 211bee9..ece1064 100644
--- a/.github/assets/example/feeds.toml
+++ b/.github/assets/example/feeds.toml
@@ -17,6 +17,10 @@ title = "bluesky"
 type = "bluesky"
 id = "username"
 [[lists.feeds]]
+title = "nitter"
+type = "nitter"
+id = "example tweet search"
+[[lists.feeds]]
 title = "note"
 type = "note"
 id = "username"
@@ -28,3 +32,7 @@ id = "subreddit-name"
 title = "sizu.me"
 type = "sizu.me"
 id = "username"
+[[lists.feeds]]
+title = "zenn"
+type = "zenn"
+id = "username"
diff --git a/.github/workflows/deps-update.yml b/.github/workflows/deps-update.yml
index b52f7b2..a9c1e0a 100644
--- a/.github/workflows/deps-update.yml
+++ b/.github/workflows/deps-update.yml
@@ -26,3 +26,4 @@ jobs:
           base: dev
           branch: deps-deno
           commit-prefix: "chore(deps):"
+          labels:
diff --git a/.github/workflows/gist-update.yml b/.github/workflows/gist-update.yml
index f4a138c..9592f6d 100644
--- a/.github/workflows/gist-update.yml
+++ b/.github/workflows/gist-update.yml
@@ -14,7 +14,7 @@ jobs:
         uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7
 
       - name: 🦕 Setup Deno
-        uses: denoland/setup-deno@041b854f97b325bd60e53e9dc2de9cb9f9ac0cba # v1.1.4
+        uses: denoland/setup-deno@f99b7edee36540f7183c45aad62fbb93d6d41d9d # v1.2.0
         with:
           deno-version: v1.x
 
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index b1721c2..f0896b4 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -24,7 +24,7 @@ jobs:
         uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7
 
       - name: 🦕 Setup Deno
-        uses: denoland/setup-deno@041b854f97b325bd60e53e9dc2de9cb9f9ac0cba # v1.1.4
+        uses: denoland/setup-deno@f99b7edee36540f7183c45aad62fbb93d6d41d9d # v1.2.0
         with:
           deno-version: v1.x
 
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 34b98b8..ed61237 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -23,7 +23,7 @@ repos:
         args: [--whitespaces-count, "2"]
 
   - repo: https://github.com/crate-ci/typos
-    rev: v1.22.7
+    rev: v1.22.9
     hooks:
       - id: typos
 
diff --git a/deno.json b/deno.json
index a0e958c..0649aea 100644
--- a/deno.json
+++ b/deno.json
@@ -3,8 +3,8 @@
   "fmt": { "exclude": ["LICENSE", ".github/**/*.md"] },
   "test": { "include": ["src/", "test/"] },
   "tasks": {
-    "gen": "deno run --allow-read --allow-write ./src/main.ts",
-    "test": "deno test --allow-read --allow-write --parallel --shuffle",
+    "gen": "deno run --allow-env --allow-read --allow-write ./src/main.ts",
+    "test": "deno test --allow-env --allow-read --allow-write --parallel --shuffle",
     "cov": "deno task test --coverage && deno coverage --lcov > coverage.lcov"
   },
   "imports": {
@@ -15,6 +15,7 @@
     "@std/cli": "jsr:@std/cli@0.224.6",
     "@std/path": "jsr:@std/path@0.225.2",
     "@std/toml": "jsr:@std/toml@0.224.1",
+    "@std/url": "jsr:@std/url@0.224.1",
     "@wok/case": "jsr:@wok/case@1.0.1"
   }
 }
diff --git a/deno.lock b/deno.lock
index c5035fd..350466f 100644
--- a/deno.lock
+++ b/deno.lock
@@ -10,7 +10,9 @@
       "jsr:@std/collections@^1.0.0-rc.1": "jsr:@std/collections@1.0.0-rc.1",
       "jsr:@std/internal@^1.0.0": "jsr:@std/internal@1.0.0",
       "jsr:@std/path@0.225.2": "jsr:@std/path@0.225.2",
+      "jsr:@std/path@1.0.0-rc.1": "jsr:@std/path@1.0.0-rc.1",
       "jsr:@std/toml@0.224.1": "jsr:@std/toml@0.224.1",
+      "jsr:@std/url@0.224.1": "jsr:@std/url@0.224.1",
       "jsr:@wok/case@1.0.1": "jsr:@wok/case@1.0.1"
     },
     "jsr": {
@@ -44,12 +46,21 @@
           "jsr:@std/assert@^0.226.0"
         ]
       },
+      "@std/path@1.0.0-rc.1": {
+        "integrity": "b8c00ae2f19106a6bb7cbf1ab9be52aa70de1605daeb2dbdc4f87a7cbaf10ff6"
+      },
       "@std/toml@0.224.1": {
         "integrity": "c364b9ca3b18207223c4e2a1f652ef2970ff80967f7575ddf89b6b0565a17148",
         "dependencies": [
           "jsr:@std/collections@^1.0.0-rc.1"
         ]
       },
+      "@std/url@0.224.1": {
+        "integrity": "19f0e1c6ff8fc2ef9522a746595c24f53be47425daa910eb8ef39cbb5e00b3df",
+        "dependencies": [
+          "jsr:@std/path@1.0.0-rc.1"
+        ]
+      },
       "@wok/case@1.0.1": {
         "integrity": "409e94f961f5b278992bace87a0c7d3c6a3db516d01759bdb827d9ae4d75e9aa"
       }
@@ -63,6 +74,7 @@
       "jsr:@std/cli@0.224.6",
       "jsr:@std/path@0.225.2",
       "jsr:@std/toml@0.224.1",
+      "jsr:@std/url@0.224.1",
       "jsr:@wok/case@1.0.1"
     ]
   }
diff --git a/src/libs/sites.ts b/src/libs/sites.ts
index b64b5cf..ddf9581 100644
--- a/src/libs/sites.ts
+++ b/src/libs/sites.ts
@@ -1,10 +1,19 @@
+import { join } from "@std/url";
 import type { site } from "@5ouma/opml-generator/types";
 
 const sites: site[] = [
   { type: "bluesky", url: new URL("https://bsky.app/profile/{id}/rss") },
+  {
+    type: "nitter",
+    url: join(
+      new URL(`https://${Deno.env.get("NITTER_DOMAIN") ?? "cdn.xcancel.com"}`),
+      "/search/rss?f=tweets&q={id}",
+    ),
+  },
   { type: "note", url: new URL("https://note.com/{id}/rss") },
   { type: "reddit", url: new URL("https://www.reddit.com/r/{id}/.rss") },
   { type: "sizu.me", url: new URL("https://sizu.me/{id}/rss") },
+  { type: "zenn", url: new URL("https://zenn.dev/{id}/feed") },
 ];
 
 export function transcodeXmlUrl(
@@ -19,5 +28,7 @@ export function transcodeXmlUrl(
     .find((site: site) => site.type === type)?.url;
   if (!url) throw new Error(`site not found: "${type}" of "${title}"`);
 
-  return new URL(url.href.replace(encodeURI("{id}"), id));
+  return new URL(
+    url.href.replace(encodeURI("{id}"), id).replaceAll("%3F", "?"),
+  );
 }