diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7dadcdc..4b077a9 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,10 +8,11 @@ All notable changes to this project will be documented in this file.
 - [Semantic Versioning](https://semver.org/spec/v2.0.0.html)
 - [`auto-changelog`](https://github.com/CookPete/auto-changelog)
 
-## [v1.39.5](https://github.com/zrwusa/data-structure-typed/compare/v1.35.0...main) (upcoming)
+## [v1.39.6](https://github.com/zrwusa/data-structure-typed/compare/v1.35.0...main) (upcoming)
 
 ### Changes
 
+- [graph test] edge cases enriched [`#30`](https://github.com/zrwusa/data-structure-typed/pull/30)
 - [graph] Modify the data structure design of the graph to change the g… [`#29`](https://github.com/zrwusa/data-structure-typed/pull/29)
 - Optimization [`#23`](https://github.com/zrwusa/data-structure-typed/pull/23)
 - Optimization [`#20`](https://github.com/zrwusa/data-structure-typed/pull/20)
diff --git a/package-lock.json b/package-lock.json
index 9d349dd..6a3b471 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "data-structure-typed",
-  "version": "1.39.5",
+  "version": "1.39.6",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "data-structure-typed",
-      "version": "1.39.5",
+      "version": "1.39.6",
       "license": "MIT",
       "devDependencies": {
         "@types/benchmark": "^2.1.3",
@@ -15,17 +15,17 @@
         "@typescript-eslint/eslint-plugin": "^6.7.4",
         "@typescript-eslint/parser": "^6.7.4",
         "auto-changelog": "^2.4.0",
-        "avl-tree-typed": "^1.39.4",
+        "avl-tree-typed": "^1.39.5",
         "benchmark": "^2.1.4",
-        "binary-tree-typed": "^1.39.4",
-        "bst-typed": "^1.39.4",
+        "binary-tree-typed": "^1.39.5",
+        "bst-typed": "^1.39.5",
         "dependency-cruiser": "^14.1.0",
         "eslint": "^8.50.0",
         "eslint-config-prettier": "^9.0.0",
         "eslint-import-resolver-alias": "^1.1.2",
         "eslint-import-resolver-typescript": "^3.6.1",
         "eslint-plugin-import": "^2.28.1",
-        "heap-typed": "^1.39.4",
+        "heap-typed": "^1.39.5",
         "istanbul-badges-readme": "^1.8.5",
         "jest": "^29.7.0",
         "prettier": "^3.0.3",
@@ -2728,12 +2728,12 @@
       }
     },
     "node_modules/avl-tree-typed": {
-      "version": "1.39.4",
-      "resolved": "https://registry.npmjs.org/avl-tree-typed/-/avl-tree-typed-1.39.4.tgz",
-      "integrity": "sha512-hgX97KNfwuIu9byrhFF22WBqA1OgMk97bSDB8mKdhZ/5E9OecAglnh8vjeLqxAt0DUFUpghXJ+AenXoVlBYWmw==",
+      "version": "1.39.5",
+      "resolved": "https://registry.npmjs.org/avl-tree-typed/-/avl-tree-typed-1.39.5.tgz",
+      "integrity": "sha512-4KpwQrTkbo22Q/dHESzUX+T0m/Ho18fvoxeeH48k1O7vuIWeUWfqAJ3DcWuANWD6urMaICNb5xM/E4DHdlS0Yg==",
       "dev": true,
       "dependencies": {
-        "data-structure-typed": "^1.39.4"
+        "data-structure-typed": "^1.39.5"
       }
     },
     "node_modules/babel-jest": {
@@ -2927,12 +2927,12 @@
       }
     },
     "node_modules/binary-tree-typed": {
-      "version": "1.39.4",
-      "resolved": "https://registry.npmjs.org/binary-tree-typed/-/binary-tree-typed-1.39.4.tgz",
-      "integrity": "sha512-HC3ue5u5Db4mW0EkE8rd6Bq5wQB5DSQHm4R6DhUnd95TRV/diiqD8MUheVNddEm3vg+vgCwTKCvwsO3joBakQw==",
+      "version": "1.39.5",
+      "resolved": "https://registry.npmjs.org/binary-tree-typed/-/binary-tree-typed-1.39.5.tgz",
+      "integrity": "sha512-4+2vmkEmBnzGLCyiGJwRy2k86IDoG1PxfVjXp31H469iPzts5MpQoBgCOttuy9fzXZRQBZautroTNwjXZK2sWA==",
       "dev": true,
       "dependencies": {
-        "data-structure-typed": "^1.39.4"
+        "data-structure-typed": "^1.39.5"
       }
     },
     "node_modules/brace-expansion": {
@@ -3011,12 +3011,12 @@
       }
     },
     "node_modules/bst-typed": {
-      "version": "1.39.4",
-      "resolved": "https://registry.npmjs.org/bst-typed/-/bst-typed-1.39.4.tgz",
-      "integrity": "sha512-efEtQyABOUehz7b+zpnL5QUg8IsK/vnoaB+ws+NN9LHAYlcJ4DvhvdAJT4J7YfnthNOhVgV6b+XmIOnaviWKHw==",
+      "version": "1.39.5",
+      "resolved": "https://registry.npmjs.org/bst-typed/-/bst-typed-1.39.5.tgz",
+      "integrity": "sha512-vMyRR1piavhx8rTf81nzU/RMBY5p5++4fX4EZI9CXhgFAFormuj9h/7BP0BDMzeaQMILIo9ruBdeChMp/D6xnQ==",
       "dev": true,
       "dependencies": {
-        "data-structure-typed": "^1.39.4"
+        "data-structure-typed": "^1.39.5"
       }
     },
     "node_modules/buffer-from": {
@@ -3413,9 +3413,9 @@
       }
     },
     "node_modules/data-structure-typed": {
-      "version": "1.39.4",
-      "resolved": "https://registry.npmjs.org/data-structure-typed/-/data-structure-typed-1.39.4.tgz",
-      "integrity": "sha512-i2GtZluNIvGrQ6147oe7v0g2RV9KPDBT8bMbRDM+7cIHrQ3zr3w70W6yZx5scSKCvtg18kJ5lyXXPbEiY7zHsg==",
+      "version": "1.39.5",
+      "resolved": "https://registry.npmjs.org/data-structure-typed/-/data-structure-typed-1.39.5.tgz",
+      "integrity": "sha512-PyrhlHFxmkfMSwRG/83uw9GWLFBTjz8TCfbhMiq7Am+F/adoOnWuYT+gFUHtyRV7+ts+iIDXYfgkyiqm6ijL4g==",
       "dev": true
     },
     "node_modules/debug": {
@@ -4771,12 +4771,12 @@
       }
     },
     "node_modules/heap-typed": {
-      "version": "1.39.4",
-      "resolved": "https://registry.npmjs.org/heap-typed/-/heap-typed-1.39.4.tgz",
-      "integrity": "sha512-5qF7vdcFV9ZgIXZ3YyDZOHDZV9Ik+3Mv6Us2gStyyYGmMpgbENgAUxZmh8MDKJAH/Hf1DWK7TTGi0AQWPWKFWg==",
+      "version": "1.39.5",
+      "resolved": "https://registry.npmjs.org/heap-typed/-/heap-typed-1.39.5.tgz",
+      "integrity": "sha512-nZZLUskWW4t2i3en95o1iNwQ0duN49TPMfsPPsnpo7SJp3D4MiLiNQhfz16grf8pl/tvMOYGKCKhFdb2eqBgmQ==",
       "dev": true,
       "dependencies": {
-        "data-structure-typed": "^1.39.4"
+        "data-structure-typed": "^1.39.5"
       }
     },
     "node_modules/html-escaper": {
diff --git a/package.json b/package.json
index de2f4c4..c5e40dd 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "data-structure-typed",
-  "version": "1.39.5",
+  "version": "1.39.6",
   "description": "Data Structures of Javascript & TypeScript. Binary Tree, BST, Graph, Heap, Priority Queue, Linked List, Queue, Deque, Stack, AVL Tree, Tree Multiset, Trie, Directed Graph, Undirected Graph, Singly Linked List, Doubly Linked List, Max Heap, Max Priority Queue, Min Heap, Min Priority Queue.",
   "main": "dist/cjs/index.js",
   "module": "dist/mjs/index.js",
@@ -61,17 +61,17 @@
     "@typescript-eslint/eslint-plugin": "^6.7.4",
     "@typescript-eslint/parser": "^6.7.4",
     "auto-changelog": "^2.4.0",
-    "avl-tree-typed": "^1.39.4",
+    "avl-tree-typed": "^1.39.5",
     "benchmark": "^2.1.4",
-    "binary-tree-typed": "^1.39.4",
-    "bst-typed": "^1.39.4",
+    "binary-tree-typed": "^1.39.5",
+    "bst-typed": "^1.39.5",
     "dependency-cruiser": "^14.1.0",
     "eslint": "^8.50.0",
     "eslint-config-prettier": "^9.0.0",
     "eslint-import-resolver-alias": "^1.1.2",
     "eslint-import-resolver-typescript": "^3.6.1",
     "eslint-plugin-import": "^2.28.1",
-    "heap-typed": "^1.39.4",
+    "heap-typed": "^1.39.5",
     "istanbul-badges-readme": "^1.8.5",
     "jest": "^29.7.0",
     "prettier": "^3.0.3",