diff --git a/package.json b/package.json
index 8c27c94..4b8084f 100644
--- a/package.json
+++ b/package.json
@@ -9,7 +9,7 @@
   },
   "dependencies": {
     "bootbox": "^4.4.0",
-    "bootstrap-sass": "^3.3.6",
+    "bootstrap-sass": "^3.4.1",
     "flatpickr": "^1.9.1",
     "font-awesome": "^4.5.0",
     "jquery": "^3.3.1",
diff --git a/yarn.lock b/yarn.lock
index 8ca20b0..023aa30 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -202,9 +202,9 @@ bootbox@^4.4.0:
   version "4.4.0"
   resolved "https://registry.yarnpkg.com/bootbox/-/bootbox-4.4.0.tgz#ff7f898fb87d4527e547feb64158f88450d1a0c9"
 
-bootstrap-sass@^3.3.6:
-  version "3.3.7"
-  resolved "https://registry.yarnpkg.com/bootstrap-sass/-/bootstrap-sass-3.3.7.tgz#6596c7ab40f6637393323ab0bc80d064fc630498"
+bootstrap-sass@^3.4.1:
+  version "3.4.1"
+  resolved "https://registry.yarnpkg.com/bootstrap-sass/-/bootstrap-sass-3.4.1.tgz#6843c73b1c258a0ac5cb2cc6f6f5285b664a8e9a"
 
 brace-expansion@^1.0.0, brace-expansion@^1.1.7:
   version "1.1.11"