diff --git a/package-lock.json b/package-lock.json
index 84542fc..8109f92 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -260,6 +260,7 @@
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       "integrity": "sha1-o7Bz+Uq0nrb6Vc1lInozQ4BjJJc=",
       "dev": true,
+      "optional": true,
       "requires": {
         "babel-runtime": "^6.26.0",
         "esutils": "^2.0.2",
@@ -271,7 +272,8 @@
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       "resolved": "https://registry.npmjs.org/babylon/-/babylon-6.18.0.tgz",
       "integrity": "sha512-q/UEjfGJ2Cm3oKV71DJz9d25TPnq5rhBVL2Q4fA5wcC3jcrdn7+SssEybFIxwAvvP+YCsCYNKughoF33GxgycQ==",
-      "dev": true
+      "dev": true,
+      "optional": true
     },
     "balanced-match": {
       "version": "1.0.0",
@@ -292,9 +294,9 @@
       "dev": true
     },
     "bootstrap": {
-      "version": "4.1.3",
-      "resolved": "https://registry.npmjs.org/bootstrap/-/bootstrap-4.1.3.tgz",
-      "integrity": "sha512-rDFIzgXcof0jDyjNosjv4Sno77X4KuPeFxG2XZZv1/Kc8DRVGVADdoQyyOVDwPqL36DDmtCQbrpMCqvpPLJQ0w=="
+      "version": "4.3.1",
+      "resolved": "https://registry.npmjs.org/bootstrap/-/bootstrap-4.3.1.tgz",
+      "integrity": "sha512-rXqOmH1VilAt2DyPzluTi2blhk17bO7ef+zLLPlWvG494pDxcM234pJ8wTc/6R40UWizAIIMgxjvxZg5kmsbag=="
     },
     "brace-expansion": {
       "version": "1.1.11",
@@ -813,6 +815,7 @@
       "resolved": "https://registry.npmjs.org/define-properties/-/define-properties-1.1.3.tgz",
       "integrity": "sha512-3MqfYKj2lLzdMSf8ZIZE/V+Zuy+BgD6f164e8K2w7dgnpKArBDerGYpM46IYYcjnkdPNMjPk9A6VFB8+3SKlXQ==",
       "dev": true,
+      "optional": true,
       "requires": {
         "object-keys": "^1.0.12"
       }
@@ -1549,7 +1552,8 @@
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/has-symbols/-/has-symbols-1.0.0.tgz",
       "integrity": "sha1-uhqPGvKg/DllD1yFA2dwQSIGO0Q=",
-      "dev": true
+      "dev": true,
+      "optional": true
     },
     "hash-base": {
       "version": "3.0.4",
@@ -1725,7 +1729,8 @@
       "version": "1.1.4",
       "resolved": "https://registry.npmjs.org/is-callable/-/is-callable-1.1.4.tgz",
       "integrity": "sha512-r5p9sxJjYnArLjObpjA4xu5EKI3CuKHkJXMhT7kwbpUyIFD1n5PMAsoPvWnvtZiNz7LjkYDRZhd7FlI0eMijEA==",
-      "dev": true
+      "dev": true,
+      "optional": true
     },
     "is-date-object": {
       "version": "1.0.1",
@@ -3230,7 +3235,8 @@
       "version": "1.0.3",
       "resolved": "https://registry.npmjs.org/to-fast-properties/-/to-fast-properties-1.0.3.tgz",
       "integrity": "sha1-uDVx+k2MJbguIxsG46MFXeTKGkc=",
-      "dev": true
+      "dev": true,
+      "optional": true
     },
     "tty-browserify": {
       "version": "0.0.1",
diff --git a/package.json b/package.json
index 0e5b1e5..fa7aac0 100644
--- a/package.json
+++ b/package.json
@@ -15,7 +15,7 @@
   },
   "dependencies": {
     "@fortawesome/fontawesome-free": "5.5.0",
-    "bootstrap": "4.1.3",
+    "bootstrap": "4.3.1",
     "clipboard": "2.0.4",
     "jquery": "3.3.1",
     "lg-thumbnail": "1.1.0",