diff --git a/python/algorithms/merge_sort/Pipfile.lock b/python/algorithms/merge_sort/Pipfile.lock
index f507858..d0c4dcd 100644
--- a/python/algorithms/merge_sort/Pipfile.lock
+++ b/python/algorithms/merge_sort/Pipfile.lock
@@ -1,122 +1,118 @@
-{
-    "_meta": {
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-        },
-        "pipfile-spec": 6,
-        "requires": {
-            "python_version": "3.7"
-        },
-        "sources": [
-            {
-                "name": "pypi",
-                "url": "https://pypi.org/simple",
-                "verify_ssl": true
-            }
-        ]
-    },
-    "default": {
-        "atomicwrites": {
-            "hashes": [
-                "sha256:03472c30eb2c5d1ba9227e4c2ca66ab8287fbfbbda3888aa93dc2e28fc6811b4",
-                "sha256:75a9445bac02d8d058d5e1fe689654ba5a6556a1dfd8ce6ec55a0ed79866cfa6"
-            ],
-            "version": "==1.3.0"
-        },
-        "attrs": {
-            "hashes": [
-                "sha256:69c0dbf2ed392de1cb5ec704444b08a5ef81680a61cb899dc08127123af36a79",
-                "sha256:f0b870f674851ecbfbbbd364d6b5cbdff9dcedbc7f3f5e18a6891057f21fe399"
-            ],
-            "version": "==19.1.0"
-        },
-        "colorama": {
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-                "sha256:f8ac84de7840f5b9c4e3347b3c1eaa50f7e49c2b07596221daec5edaabbd7c48"
-            ],
-            "markers": "sys_platform == 'win32'",
-            "version": "==0.4.1"
-        },
-        "importlib-metadata": {
-            "hashes": [
-                "sha256:23d3d873e008a513952355379d93cbcab874c58f4f034ff657c7a87422fa64e8",
-                "sha256:80d2de76188eabfbfcf27e6a37342c2827801e59c4cc14b0371c56fed43820e3"
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-            "version": "==0.19"
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-            "version": "==7.2.0"
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-                "sha256:c491ca87294da7cc01902edbe30a5bc6c4c28172b5138ab4e4aa1b9d7bfaeafe"
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-            "version": "==19.1"
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-        "pep8": {
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-                "sha256:b22cfae5db09833bb9bd7c8463b53e1a9c9b39f12e304a8d0bba729c501827ee",
-                "sha256:fe249b52e20498e59e0b5c5256aa52ee99fc295b26ec9eaa85776ffdb9fe6374"
-            ],
-            "index": "pypi",
-            "version": "==1.7.1"
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-        "pluggy": {
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-                "sha256:0825a152ac059776623854c1543d65a4ad408eb3d33ee114dff91e57ec6ae6fc",
-                "sha256:b9817417e95936bf75d85d3f8767f7df6cdde751fc40aed3bb3074cbcb77757c"
-            ],
-            "version": "==0.12.0"
-        },
-        "py": {
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-                "sha256:dc639b046a6e2cff5bbe40194ad65936d6ba360b52b3c3fe1d08a82dd50b5e53"
-            ],
-            "version": "==1.8.0"
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-        "pyparsing": {
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-                "sha256:6f98a7b9397e206d78cc01df10131398f1c8b8510a2f4d97d9abd82e1aacdd80",
-                "sha256:d9338df12903bbf5d65a0e4e87c2161968b10d2e489652bb47001d82a9b028b4"
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-            "version": "==2.4.2"
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-        "pytest": {
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-                "sha256:a736fed91c12681a7b34617c8fcefe39ea04599ca72c608751c31d89579a3f77"
-            ],
-            "index": "pypi",
-            "version": "==5.0.1"
-        },
-        "six": {
-            "hashes": [
-                "sha256:3350809f0555b11f552448330d0b52d5f24c91a322ea4a15ef22629740f3761c",
-                "sha256:d16a0141ec1a18405cd4ce8b4613101da75da0e9a7aec5bdd4fa804d0e0eba73"
-            ],
-            "version": "==1.12.0"
-        },
-        "wcwidth": {
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-                "sha256:f4ebe71925af7b40a864553f761ed559b43544f8f71746c2d756c7fe788ade7c"
-            ],
-            "version": "==0.1.7"
-        },
-        "zipp": {
-            "hashes": [
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-                "sha256:8a5712cfd3bb4248015eb3b0b3c54a5f6ee3f2425963ef2a0125b8bc40aafaec"
-            ],
-            "version": "==0.5.2"
-        }
-    },
-    "develop": {}
-}
+{
+    "_meta": {
+        "hash": {
+            "sha256": "5027d69874fd4b5d5db64350830c8da73a06f08a76dcc99130af8fe8ef944394"
+        },
+        "pipfile-spec": 6,
+        "requires": {
+            "python_version": "3.7"
+        },
+        "sources": [
+            {
+                "name": "pypi",
+                "url": "https://pypi.org/simple",
+                "verify_ssl": true
+            }
+        ]
+    },
+    "default": {
+        "atomicwrites": {
+            "hashes": [
+                "sha256:6d1784dea7c0c8d4a5172b6c620f40b6e4cbfdf96d783691f2e1302a7b88e197",
+                "sha256:ae70396ad1a434f9c7046fd2dd196fc04b12f9e91ffb859164193be8b6168a7a"
+            ],
+            "version": "==1.4.0"
+        },
+        "attrs": {
+            "hashes": [
+                "sha256:31b2eced602aa8423c2aea9c76a724617ed67cf9513173fd3a4f03e3a929c7e6",
+                "sha256:832aa3cde19744e49938b91fea06d69ecb9e649c93ba974535d08ad92164f700"
+            ],
+            "version": "==20.3.0"
+        },
+        "importlib-metadata": {
+            "hashes": [
+                "sha256:19192b88d959336bfa6bdaaaef99aeafec179eca19c47c804e555703ee5f07ef",
+                "sha256:2e881981c9748d7282b374b68e759c87745c25427b67ecf0cc67fb6637a1bff9"
+            ],
+            "markers": "python_version < '3.8'",
+            "version": "==4.0.0"
+        },
+        "more-itertools": {
+            "hashes": [
+                "sha256:5652a9ac72209ed7df8d9c15daf4e1aa0e3d2ccd3c87f8265a0673cd9cbc9ced",
+                "sha256:c5d6da9ca3ff65220c3bfd2a8db06d698f05d4d2b9be57e1deb2be5a45019713"
+            ],
+            "version": "==8.7.0"
+        },
+        "packaging": {
+            "hashes": [
+                "sha256:5b327ac1320dc863dca72f4514ecc086f31186744b84a230374cc1fd776feae5",
+                "sha256:67714da7f7bc052e064859c05c595155bd1ee9f69f76557e21f051443c20947a"
+            ],
+            "version": "==20.9"
+        },
+        "pep8": {
+            "hashes": [
+                "sha256:b22cfae5db09833bb9bd7c8463b53e1a9c9b39f12e304a8d0bba729c501827ee",
+                "sha256:fe249b52e20498e59e0b5c5256aa52ee99fc295b26ec9eaa85776ffdb9fe6374"
+            ],
+            "index": "pypi",
+            "version": "==1.7.1"
+        },
+        "pluggy": {
+            "hashes": [
+                "sha256:15b2acde666561e1298d71b523007ed7364de07029219b604cf808bfa1c765b0",
+                "sha256:966c145cd83c96502c3c3868f50408687b38434af77734af1e9ca461a4081d2d"
+            ],
+            "version": "==0.13.1"
+        },
+        "py": {
+            "hashes": [
+                "sha256:21b81bda15b66ef5e1a777a21c4dcd9c20ad3efd0b3f817e7a809035269e1bd3",
+                "sha256:3b80836aa6d1feeaa108e046da6423ab8f6ceda6468545ae8d02d9d58d18818a"
+            ],
+            "index": "pypi",
+            "version": "==1.10.0"
+        },
+        "pyparsing": {
+            "hashes": [
+                "sha256:c203ec8783bf771a155b207279b9bccb8dea02d8f0c9e5f8ead507bc3246ecc1",
+                "sha256:ef9d7589ef3c200abe66653d3f1ab1033c3c419ae9b9bdb1240a85b024efc88b"
+            ],
+            "version": "==2.4.7"
+        },
+        "pytest": {
+            "hashes": [
+                "sha256:6ef6d06de77ce2961156013e9dff62f1b2688aa04d0dc244299fe7d67e09370d",
+                "sha256:a736fed91c12681a7b34617c8fcefe39ea04599ca72c608751c31d89579a3f77"
+            ],
+            "index": "pypi",
+            "version": "==5.0.1"
+        },
+        "typing-extensions": {
+            "hashes": [
+                "sha256:7cb407020f00f7bfc3cb3e7881628838e69d8f3fcab2f64742a5e76b2f841918",
+                "sha256:99d4073b617d30288f569d3f13d2bd7548c3a7e4c8de87db09a9d29bb3a4a60c",
+                "sha256:dafc7639cde7f1b6e1acc0f457842a83e722ccca8eef5270af2d74792619a89f"
+            ],
+            "markers": "python_version < '3.8'",
+            "version": "==3.7.4.3"
+        },
+        "wcwidth": {
+            "hashes": [
+                "sha256:beb4802a9cebb9144e99086eff703a642a13d6a0052920003a230f3294bbe784",
+                "sha256:c4d647b99872929fdb7bdcaa4fbe7f01413ed3d98077df798530e5b04f116c83"
+            ],
+            "version": "==0.2.5"
+        },
+        "zipp": {
+            "hashes": [
+                "sha256:3607921face881ba3e026887d8150cca609d517579abe052ac81fc5aeffdbd76",
+                "sha256:51cb66cc54621609dd593d1787f286ee42a5c0adbb4b29abea5a63edc3e03098"
+            ],
+            "version": "==3.4.1"
+        }
+    },
+    "develop": {}
+}