diff --git a/.github/workflows/nodejs.yml b/.github/workflows/nodejs.yml
index 88b72f3..cc5931e 100644
--- a/.github/workflows/nodejs.yml
+++ b/.github/workflows/nodejs.yml
@@ -14,7 +14,7 @@ jobs:
     - uses: actions/checkout@v4
     - uses: actions/setup-node@v4
       with:
-        node-version: ^20.8
+        node-version: '22'
     - run: |
         npm install
         npm run lint
@@ -27,7 +27,7 @@ jobs:
 
     strategy:
       matrix:
-        node-version: ['12.22.0', '12', '14.17.0', '14', '16.0.0', '16', '18', '20', '21']
+        node-version: ['12.22.0', '12', '14.17.0', '14', '16.0.0', '16', '18', '20', '22']
 
     steps:
     - uses: actions/checkout@v4
@@ -35,12 +35,12 @@ jobs:
       with:
         node-version: ${{ matrix.node-version }}
     - run: |
-        npm install
+        npm install --force eslint@8.4
         npm test
 
-  test-eslint-8_4:
+  test-eslint-9:
 
-    name: Test (ESLint 8.4)
+    name: Test (ESLint 9)
 
     runs-on: ubuntu-latest
 
@@ -48,7 +48,7 @@ jobs:
     - uses: actions/checkout@v4
     - uses: actions/setup-node@v4
       with:
-        node-version: '20'
+        node-version: '22'
     - run: |
-        npm install --force eslint@8.4
+        npm install --force eslint@9
         npm test
diff --git a/lib/format-code-path.js b/lib/format-code-path.js
index a899d49..53608d2 100644
--- a/lib/format-code-path.js
+++ b/lib/format-code-path.js
@@ -43,10 +43,10 @@ function formatCodePath(codePath, { segmentNames } = { })
     {
         const { id } = segment;
         const lines = segment.internal.nodes || [];
+        if (!segment.reachable)
+            lines.unshift('❮❮unreachable❯❯');
         if (segmentNames)
             lines.unshift(`【${id}】`);
-        else if (!lines.length)
-            lines.push(id);
         const label = lines.join('\n');
         text += `state ${JSON.stringify(label)} as ${id}\n`;
     }
diff --git a/package.json b/package.json
index 5444f1f..166803f 100644
--- a/package.json
+++ b/package.json
@@ -20,11 +20,11 @@
     "test": "mocha --check-leaks"
   },
   "dependencies": {
-    "eslint": "^8.4",
+    "eslint": ">=8.4",
     "postrequire": "2"
   },
   "devDependencies": {
-    "@origin-1/eslint-config": "latest",
+    "@origin-1/eslint-config": "eslint-8",
     "c8js": "latest",
     "eslint-formatter-compact": "latest",
     "globals": "latest",
diff --git a/test/expected/graph-2.mermaid b/test/expected/graph-2.mermaid
index 5d5c006..d2f71ee 100644
--- a/test/expected/graph-2.mermaid
+++ b/test/expected/graph-2.mermaid
@@ -5,7 +5,7 @@ classDef unreachable fill: #FF9800, stroke-dasharray: 5 5
 class s1_2 unreachable
 classDef thrown fill: none, stroke: none
 state "Program:enter\nThrowStatement:enter\nIdentifier (foo)\nThrowStatement:exit" as s1_1
-state "Program:exit" as s1_2
+state "❮❮unreachable❯❯\nProgram:exit" as s1_2
 thrown:::thrown: ✘
 [*] --> s1_1
 s1_1 --> s1_2
diff --git a/test/expected/graph-3.mermaid b/test/expected/graph-3.mermaid
index 11e2480..3f78d34 100644
--- a/test/expected/graph-3.mermaid
+++ b/test/expected/graph-3.mermaid
@@ -7,7 +7,7 @@ classDef thrown fill: none, stroke: none
 state "【s1_1】" as s1_1
 state "【s1_2】" as s1_2
 state "【s1_4】" as s1_4
-state "【s1_3】" as s1_3
+state "【s1_3】\n❮❮unreachable❯❯" as s1_3
 thrown:::thrown: ✘
 [*] --> s1_1
 s1_1 --> s1_2
diff --git a/test/expected/graph-4.mermaid b/test/expected/graph-4.mermaid
index 3d86945..83bd844 100644
--- a/test/expected/graph-4.mermaid
+++ b/test/expected/graph-4.mermaid
@@ -7,7 +7,7 @@ classDef thrown fill: none, stroke: none
 state "【s1_1】\nProgram:enter\nIfStatement:enter\nIdentifier (foo)" as s1_1
 state "【s1_2】\nThrowStatement:enter\nIdentifier (bar)\nThrowStatement:exit" as s1_2
 state "【s1_4】\nIfStatement:exit\nProgram:exit" as s1_4
-state "【s1_3】" as s1_3
+state "【s1_3】\n❮❮unreachable❯❯" as s1_3
 thrown:::thrown: ✘
 [*] --> s1_1
 s1_1 --> s1_2
diff --git a/test/expected/graph-7.mermaid b/test/expected/graph-7.mermaid
index 59a18d2..085c38b 100644
--- a/test/expected/graph-7.mermaid
+++ b/test/expected/graph-7.mermaid
@@ -4,7 +4,7 @@ class s1_1, s1_2 common
 classDef unreachable fill: #FF9800, stroke-dasharray: 5 5
 class s1_2 unreachable
 state "Program:enter\nReturnStatement:enter\nIdentifier (foo)\nReturnStatement:exit" as s1_1
-state "Program:exit" as s1_2
+state "❮❮unreachable❯❯\nProgram:exit" as s1_2
 [*] --> s1_1
 s1_1 --> s1_2
 s1_1 --> [*]
diff --git a/test/expected/graph-8.mermaid b/test/expected/graph-8.mermaid
index e44900e..debc8c2 100644
--- a/test/expected/graph-8.mermaid
+++ b/test/expected/graph-8.mermaid
@@ -6,7 +6,7 @@ class s1_3 unreachable
 state "Program:enter\nIfStatement:enter\nIdentifier (foo)" as s1_1
 state "ReturnStatement" as s1_2
 state "IfStatement:exit\nProgram:exit" as s1_4
-state "s1_3" as s1_3
+state "❮❮unreachable❯❯" as s1_3
 [*] --> s1_1
 s1_1 --> s1_2
 s1_1 --> s1_4