diff --git a/package-lock.json b/package-lock.json
index 8ce6420..2a47df2 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1401,19 +1401,27 @@
       }
     },
     "@rails/actioncable": {
-      "version": "6.1.0"
+      "version": "6.1.0",
+      "resolved": "https://registry.npmjs.org/@rails/actioncable/-/actioncable-6.1.0.tgz",
+      "integrity": "sha512-eDgy+vcKN9RIzxmMBfSAe77rTj2cp6kJALiVQyKrW2O9EK2MdostOmP+99At/Dit3ur5+77NVnruxD7y14ZYFA=="
     },
     "@rails/activestorage": {
       "version": "6.1.0",
+      "resolved": "https://registry.npmjs.org/@rails/activestorage/-/activestorage-6.1.0.tgz",
+      "integrity": "sha512-47VbzNQ/45cjpcckP1eUkzh/V26kb+Qc6U8pEGbAhmNjF2/yfTzSefdHfubkz4NUSaapELqael0J3jhG8BWHsA==",
       "requires": {
         "spark-md5": "^3.0.0"
       }
     },
     "@rails/ujs": {
-      "version": "6.1.0"
+      "version": "6.1.0",
+      "resolved": "https://registry.npmjs.org/@rails/ujs/-/ujs-6.1.0.tgz",
+      "integrity": "sha512-kQNKyM4ePAc4u9eR1c4OqrbAHH+3SJXt++8izIjeaZeg+P7yBtgoF/dogMD/JPPowNC74ACFpM/4op0Ggp/fPw=="
     },
     "@rails/webpacker": {
       "version": "4.3.0",
+      "resolved": "https://registry.npmjs.org/@rails/webpacker/-/webpacker-4.3.0.tgz",
+      "integrity": "sha512-DmKGjKugLeeytT1TO9fUBBjdA3YwQ19zoWK5JDL8V1rM0bf6WRf1n9DZTiVmuf0WO1gp5ej5pJ9b3NjZwfAz4Q==",
       "requires": {
         "@babel/core": "^7.7.2",
         "@babel/plugin-proposal-class-properties": "^7.7.0",
@@ -1477,9 +1485,9 @@
       "dev": true
     },
     "@types/node": {
-      "version": "14.14.31",
-      "resolved": "https://registry.npmjs.org/@types/node/-/node-14.14.31.tgz",
-      "integrity": "sha512-vFHy/ezP5qI0rFgJ7aQnjDXwAMrG0KqqIH7tQG5PPv3BWBayOPIQNBjVc/P6hhdZfMx51REc6tfDNXHUio893g==",
+      "version": "14.14.34",
+      "resolved": "https://registry.npmjs.org/@types/node/-/node-14.14.34.tgz",
+      "integrity": "sha512-dBPaxocOK6UVyvhbnpFIj2W+S+1cBTkHQbFQfeeJhoKFbzYcVUGHvddeWPSucKATb3F0+pgDq0i6ghEaZjsugA==",
       "dev": true
     },
     "@types/parse-json": {
@@ -1748,6 +1756,7 @@
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/anymatch/-/anymatch-2.0.0.tgz",
       "integrity": "sha512-5teOsQWABXHHBFP9y3skS5P3d/WfWXpv3FUpy+LorMrNYaT9pI4oLMQX7jzQ2KklNpGpWHzdCXTDT2Y3XGlZBw==",
+      "optional": true,
       "requires": {
         "micromatch": "^3.1.4",
         "normalize-path": "^2.1.1"
@@ -1757,6 +1766,7 @@
           "version": "2.1.1",
           "resolved": "https://registry.npmjs.org/normalize-path/-/normalize-path-2.1.1.tgz",
           "integrity": "sha1-GrKLVW4Zg2Oowab35vogE3/mrtk=",
+          "optional": true,
           "requires": {
             "remove-trailing-separator": "^1.0.1"
           }
@@ -1903,7 +1913,8 @@
     "async-each": {
       "version": "1.0.3",
       "resolved": "https://registry.npmjs.org/async-each/-/async-each-1.0.3.tgz",
-      "integrity": "sha512-z/WhQ5FPySLdvREByI2vZiTWwCnF0moMJ1hK9YQwDTHKh6I7/uSckMetoRGb5UBZPC1z0jlw+n/XCgjeH7y1AQ=="
+      "integrity": "sha512-z/WhQ5FPySLdvREByI2vZiTWwCnF0moMJ1hK9YQwDTHKh6I7/uSckMetoRGb5UBZPC1z0jlw+n/XCgjeH7y1AQ==",
+      "optional": true
     },
     "async-foreach": {
       "version": "0.1.3",
@@ -2073,7 +2084,8 @@
     "binary-extensions": {
       "version": "1.13.1",
       "resolved": "https://registry.npmjs.org/binary-extensions/-/binary-extensions-1.13.1.tgz",
-      "integrity": "sha512-Un7MIEDdUC5gNpcGDV97op1Ywk748MpHcFTHoYs6qnj1Z3j7I53VG3nwZhKzoBZmbdRNnb6WRdFlwl7tSDuZGw=="
+      "integrity": "sha512-Un7MIEDdUC5gNpcGDV97op1Ywk748MpHcFTHoYs6qnj1Z3j7I53VG3nwZhKzoBZmbdRNnb6WRdFlwl7tSDuZGw==",
+      "optional": true
     },
     "bindings": {
       "version": "1.5.0",
@@ -2148,7 +2160,9 @@
       "integrity": "sha1-aN/1++YMUes3cl6p4+0xDcwed24="
     },
     "bootstrap": {
-      "version": "4.1.1"
+      "version": "4.3.1",
+      "resolved": "https://registry.npmjs.org/bootstrap/-/bootstrap-4.3.1.tgz",
+      "integrity": "sha512-rXqOmH1VilAt2DyPzluTi2blhk17bO7ef+zLLPlWvG494pDxcM234pJ8wTc/6R40UWizAIIMgxjvxZg5kmsbag=="
     },
     "bootstrap-honoka": {
       "version": "4.4.0",
@@ -2177,6 +2191,14 @@
         }
       }
     },
+    "bootswatch": {
+      "version": "4.5.2",
+      "resolved": "https://registry.npmjs.org/bootswatch/-/bootswatch-4.5.2.tgz",
+      "integrity": "sha512-Dfco9gxVtBhh8CVXkMjGLm/vNr2xjSK74agSvPVr3rrVhxFuvB/VELaLAqNH8sLeKVWBMNGwHUJS1gT3J2NYDQ==",
+      "requires": {
+        "websocket-driver": "^0.7.4"
+      }
+    },
     "brace-expansion": {
       "version": "1.1.11",
       "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-1.1.11.tgz",
@@ -4315,6 +4337,7 @@
       "version": "3.1.0",
       "resolved": "https://registry.npmjs.org/glob-parent/-/glob-parent-3.1.0.tgz",
       "integrity": "sha1-nmr2KZ2NO9K9QEMIMr0RPfkGxa4=",
+      "optional": true,
       "requires": {
         "is-glob": "^3.1.0",
         "path-dirname": "^1.0.0"
@@ -4324,6 +4347,7 @@
           "version": "3.1.0",
           "resolved": "https://registry.npmjs.org/is-glob/-/is-glob-3.1.0.tgz",
           "integrity": "sha1-e6WuJCF4BKxwcHuWkiVnSGzD6Eo=",
+          "optional": true,
           "requires": {
             "is-extglob": "^2.1.0"
           }
@@ -4597,8 +4621,7 @@
     "http-parser-js": {
       "version": "0.5.3",
       "resolved": "https://registry.npmjs.org/http-parser-js/-/http-parser-js-0.5.3.tgz",
-      "integrity": "sha512-t7hjvef/5HEK7RWTdUzVUhl8zkEu+LlaE0IYzdMuvbSDipxBRpOn4Uhw8ZyECEa808iVT8XCjzo6xmYt4CiLZg==",
-      "dev": true
+      "integrity": "sha512-t7hjvef/5HEK7RWTdUzVUhl8zkEu+LlaE0IYzdMuvbSDipxBRpOn4Uhw8ZyECEa808iVT8XCjzo6xmYt4CiLZg=="
     },
     "http-proxy": {
       "version": "1.18.1",
@@ -4825,6 +4848,7 @@
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/is-binary-path/-/is-binary-path-1.0.1.tgz",
       "integrity": "sha1-dfFmQrSA8YenEcgUFh/TpKdlWJg=",
+      "optional": true,
       "requires": {
         "binary-extensions": "^1.0.0"
       }
@@ -5097,6 +5121,11 @@
         }
       }
     },
+    "jquery": {
+      "version": "3.6.0",
+      "resolved": "https://registry.npmjs.org/jquery/-/jquery-3.6.0.tgz",
+      "integrity": "sha512-JVzAR/AjBvVt2BmYhxRCSYysDsPcssdmTFnzyLEts9qNwmjmu4JTAMYubEfwVOSwpQ1I1sKKFcxhZCI2buerfw=="
+    },
     "js-base64": {
       "version": "2.6.4",
       "resolved": "https://registry.npmjs.org/js-base64/-/js-base64-2.6.4.tgz",
@@ -6253,7 +6282,8 @@
     "path-dirname": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/path-dirname/-/path-dirname-1.0.2.tgz",
-      "integrity": "sha1-zDPSTVJeCZpTiMAzbG4yuRYGCeA="
+      "integrity": "sha1-zDPSTVJeCZpTiMAzbG4yuRYGCeA=",
+      "optional": true
     },
     "path-exists": {
       "version": "3.0.0",
@@ -6349,6 +6379,11 @@
         "ts-pnp": "^1.1.6"
       }
     },
+    "popper.js": {
+      "version": "1.16.1",
+      "resolved": "https://registry.npmjs.org/popper.js/-/popper.js-1.16.1.tgz",
+      "integrity": "sha512-Wb4p1J4zyFTbM+u6WuO4XstYx4Ky9Cewe4DWrel7B0w6VVICvPwdOpotjzcf6eD8TsckVnIMNONQyPIUFOUbCQ=="
+    },
     "portfinder": {
       "version": "1.0.28",
       "resolved": "https://registry.npmjs.org/portfinder/-/portfinder-1.0.28.tgz",
@@ -7592,6 +7627,7 @@
       "version": "2.2.1",
       "resolved": "https://registry.npmjs.org/readdirp/-/readdirp-2.2.1.tgz",
       "integrity": "sha512-1JU/8q+VgFZyxwrJ+SVIOsh+KywWGpds3NTqikiKpDMZWScmAYyKIgqkO+ARvNWJfXeXR1zxz7aHF4u4CyH6vQ==",
+      "optional": true,
       "requires": {
         "graceful-fs": "^4.1.11",
         "micromatch": "^3.1.10",
@@ -7698,7 +7734,8 @@
     "remove-trailing-separator": {
       "version": "1.1.0",
       "resolved": "https://registry.npmjs.org/remove-trailing-separator/-/remove-trailing-separator-1.1.0.tgz",
-      "integrity": "sha1-wkvOKig62tW8P1jg1IJJuSN52O8="
+      "integrity": "sha1-wkvOKig62tW8P1jg1IJJuSN52O8=",
+      "optional": true
     },
     "repeat-element": {
       "version": "1.1.3",
@@ -8981,7 +9018,9 @@
       }
     },
     "turbolinks": {
-      "version": "5.2.0"
+      "version": "5.2.0",
+      "resolved": "https://registry.npmjs.org/turbolinks/-/turbolinks-5.2.0.tgz",
+      "integrity": "sha512-pMiez3tyBo6uRHFNNZoYMmrES/IaGgMhQQM+VFF36keryjb5ms0XkVpmKHkfW/4Vy96qiGW3K9bz0tF5sK9bBw=="
     },
     "tweetnacl": {
       "version": "0.14.5",
@@ -9114,7 +9153,8 @@
     "upath": {
       "version": "1.2.0",
       "resolved": "https://registry.npmjs.org/upath/-/upath-1.2.0.tgz",
-      "integrity": "sha512-aZwGpamFO61g3OlfT7OQCHqhGnW43ieH9WZeP7QxN/G/jS4jfqUkZxoryvJgVPEcrl5NL/ggHsSmLMHuH64Lhg=="
+      "integrity": "sha512-aZwGpamFO61g3OlfT7OQCHqhGnW43ieH9WZeP7QxN/G/jS4jfqUkZxoryvJgVPEcrl5NL/ggHsSmLMHuH64Lhg==",
+      "optional": true
     },
     "uri-js": {
       "version": "4.4.1",
@@ -9550,7 +9590,9 @@
       }
     },
     "webpack-dev-server": {
-      "version": "3.11.1",
+      "version": "3.11.2",
+      "resolved": "https://registry.npmjs.org/webpack-dev-server/-/webpack-dev-server-3.11.2.tgz",
+      "integrity": "sha512-A80BkuHRQfCiNtGBS1EMf2ChTUs0x+B3wGDFmOeT4rmJOHhHTCH2naNxIHhmkr0/UillP4U3yeIyv1pNp+QDLQ==",
       "dev": true,
       "requires": {
         "ansi-html": "0.0.7",
@@ -9641,7 +9683,6 @@
       "version": "0.7.4",
       "resolved": "https://registry.npmjs.org/websocket-driver/-/websocket-driver-0.7.4.tgz",
       "integrity": "sha512-b17KeDIQVjvb0ssuSDF2cYXSg2iztliJ4B9WdsuB6J952qCPKmnVq4DyW5motImXHDC1cBT/1UezrJVsKw5zjg==",
-      "dev": true,
       "requires": {
         "http-parser-js": ">=0.5.1",
         "safe-buffer": ">=5.1.0",
@@ -9651,8 +9692,7 @@
     "websocket-extensions": {
       "version": "0.1.4",
       "resolved": "https://registry.npmjs.org/websocket-extensions/-/websocket-extensions-0.1.4.tgz",
-      "integrity": "sha512-OqedPIGOfsDlo31UNwYbCFMSaO9m9G/0faIHj5/dZFDMFqPTcx6UwqyOy3COEaEOg/9VsGIpdqn62W5KhoKSpg==",
-      "dev": true
+      "integrity": "sha512-OqedPIGOfsDlo31UNwYbCFMSaO9m9G/0faIHj5/dZFDMFqPTcx6UwqyOy3COEaEOg/9VsGIpdqn62W5KhoKSpg=="
     },
     "which": {
       "version": "1.3.1",
diff --git a/package.json b/package.json
index 1c97a8e..b4c28c6 100644
--- a/package.json
+++ b/package.json
@@ -6,7 +6,7 @@
     "@rails/activestorage": "^6.0.0",
     "@rails/ujs": "^6.0.0",
     "@rails/webpacker": "4.3.0",
-    "bootstrap": "4.5.2",
+    "bootstrap": "4.3.1",
     "bootstrap-honoka": "^4.4.0",
     "bootswatch": "4.5.2",
     "jquery": "^3.5.1",
diff --git a/yarn.lock b/yarn.lock
index 826a017..9eaa3e5 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1535,16 +1535,16 @@ bootstrap-honoka@^4.4.0:
     jquery "1.9.1 - 3"
     popper.js "^1.14.7"
 
+bootstrap@4.3.1:
+  version "4.3.1"
+  resolved "https://registry.yarnpkg.com/bootstrap/-/bootstrap-4.3.1.tgz#280ca8f610504d99d7b6b4bfc4b68cec601704ac"
+  integrity sha512-rXqOmH1VilAt2DyPzluTi2blhk17bO7ef+zLLPlWvG494pDxcM234pJ8wTc/6R40UWizAIIMgxjvxZg5kmsbag==
+
 bootstrap@4.4.0:
   version "4.4.0"
   resolved "https://registry.yarnpkg.com/bootstrap/-/bootstrap-4.4.0.tgz#477103fa44d44191971c8ca3e0b51a85ae62ea4d"
   integrity sha512-dqCYJNs/Fxa3IVQ+v/lC694POCThUjZsA4wwqs8l+yk67B6ww2Ki++WaM6CVGe5+tArBBrknzjjh01/NT5rLjA==
 
-bootstrap@4.5.2:
-  version "4.5.2"
-  resolved "https://registry.yarnpkg.com/bootstrap/-/bootstrap-4.5.2.tgz#a85c4eda59155f0d71186b6e6ad9b875813779ab"
-  integrity sha512-vlGn0bcySYl/iV+BGA544JkkZP5LB3jsmkeKLFQakCOwCM3AOk7VkldBz4jrzSe+Z0Ezn99NVXa1o45cQY4R6A==
-
 bootswatch@4.5.2:
   version "4.5.2"
   resolved "https://registry.yarnpkg.com/bootswatch/-/bootswatch-4.5.2.tgz#da2d7b5cf37b07763e2e86c67bc30256821522a4"