diff --git a/Pipfile b/Pipfile
index 9e6916c..73ac401 100644
--- a/Pipfile
+++ b/Pipfile
@@ -21,7 +21,7 @@ pymysql = "==1.0.3"
 werkzeug = "==2.3.8"
 
 [dev-packages]
-flake8 = "==3.9.2"
+flake8 = "==4.0.1"
 yapf = "==0.40.2"
 pre-commit = "==2.13.0"
 reuse = "==0.14.0"
diff --git a/Pipfile.lock b/Pipfile.lock
index e0e4451..fd7cbe6 100644
--- a/Pipfile.lock
+++ b/Pipfile.lock
@@ -1,7 +1,7 @@
 {
     "_meta": {
         "hash": {
-            "sha256": "0217ed4699e72f05ed4a0d1aa4d1a29a76d21b54bc9c2ca18677130e2296b7ac"
+            "sha256": "76fdfcacfc48807557803e641e8225459ea55aa8870857e5915d89b2f43f9497"
         },
         "pipfile-spec": 6,
         "requires": {
@@ -578,12 +578,12 @@
         },
         "flake8": {
             "hashes": [
-                "sha256:07528381786f2a6237b061f6e96610a4167b226cb926e2aa2b6b1d78057c576b",
-                "sha256:bf8fd333346d844f616e8d47905ef3a3384edae6b4e9beb0c5101e25e3110907"
+                "sha256:479b1304f72536a55948cb40a32dce8bb0ffe3501e26eaf292c7e60eb5e0428d",
+                "sha256:806e034dda44114815e23c16ef92f95c91e4c71100ff52813adf7132a6ad870d"
             ],
             "index": "pypi",
-            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3, 3.4'",
-            "version": "==3.9.2"
+            "markers": "python_version >= '3.6'",
+            "version": "==4.0.1"
         },
         "identify": {
             "hashes": [
@@ -725,19 +725,19 @@
         },
         "pycodestyle": {
             "hashes": [
-                "sha256:514f76d918fcc0b55c6680472f0a37970994e07bbb80725808c17089be302068",
-                "sha256:c389c1d06bf7904078ca03399a4816f974a1d590090fecea0c63ec26ebaf1cef"
+                "sha256:720f8b39dde8b293825e7ff02c475f3077124006db4f440dcbc9a20b76548a20",
+                "sha256:eddd5847ef438ea1c7870ca7eb78a9d47ce0cdb4851a5523949f2601d0cbbe7f"
             ],
-            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'",
-            "version": "==2.7.0"
+            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3, 3.4'",
+            "version": "==2.8.0"
         },
         "pyflakes": {
             "hashes": [
-                "sha256:7893783d01b8a89811dd72d7dfd4d84ff098e5eed95cfa8905b22bbffe52efc3",
-                "sha256:f5bc8ecabc05bb9d291eb5203d6810b49040f6ff446a756326104746cc00c1db"
+                "sha256:05a85c2872edf37a4ed30b0cce2f6093e1d0581f8c19d7393122da7e25b2b24c",
+                "sha256:3bb3a3f256f4b7968c9c788781e4ff07dce46bdf12339dcda61053375426ee2e"
             ],
             "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'",
-            "version": "==2.3.1"
+            "version": "==2.4.0"
         },
         "python-debian": {
             "hashes": [
@@ -827,11 +827,11 @@
         },
         "setuptools": {
             "hashes": [
-                "sha256:b208925fcb9f7af924ed2dc04708ea89791e24bde0d3020b27df0e116088b34e",
-                "sha256:d59a3e788ab7e012ab2c4baed1b376da6366883ee20d7a5fc426816e3d7b1193"
+                "sha256:0274581a0037b638b9fc1c6883cc71c0210865aaa76073f7882376b641b84e8f",
+                "sha256:a85e96b8be2b906f3e3e789adec6a9323abf79758ecfa3065bd740d81158b11e"
             ],
             "markers": "python_version >= '3.8'",
-            "version": "==73.0.1"
+            "version": "==74.0.0"
         },
         "toml": {
             "hashes": [