diff --git a/package-lock.json b/package-lock.json
index b674530a..b7a7e192 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -9,7 +9,7 @@
       "version": "0.2.3",
       "license": "GPL-3.0",
       "dependencies": {
-        "bootstrap": "~3.4.0",
+        "bootstrap": "~5.2.1",
         "d3": "^3.5.4",
         "flot": "~0.8.0-alpha",
         "font-awesome": "~4.7.0",
@@ -127,6 +127,16 @@
         "ms": "^2.1.1"
       }
     },
+    "node_modules/@popperjs/core": {
+      "version": "2.11.6",
+      "resolved": "https://registry.npmjs.org/@popperjs/core/-/core-2.11.6.tgz",
+      "integrity": "sha512-50/17A98tWUfQ176raKiOGXuYpLyyVMkxxG6oylzL3BPOlA6ADGdK7EYunSa4I064xerltq9TGXs8HmOk5E+vw==",
+      "peer": true,
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/popperjs"
+      }
+    },
     "node_modules/@types/color-name": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/@types/color-name/-/color-name-1.1.1.tgz",
@@ -587,11 +597,21 @@
       }
     },
     "node_modules/bootstrap": {
-      "version": "3.4.1",
-      "resolved": "https://registry.npmjs.org/bootstrap/-/bootstrap-3.4.1.tgz",
-      "integrity": "sha512-yN5oZVmRCwe5aKwzRj6736nSmKDX7pLYwsXiCj/EYmo16hODaBiT4En5btW/jhBF/seV+XMx3aYwukYC3A49DA==",
-      "engines": {
-        "node": ">=6"
+      "version": "5.2.1",
+      "resolved": "https://registry.npmjs.org/bootstrap/-/bootstrap-5.2.1.tgz",
+      "integrity": "sha512-UQi3v2NpVPEi1n35dmRRzBJFlgvWHYwyem6yHhuT6afYF+sziEt46McRbT//kVXZ7b1YUYEVGdXEH74Nx3xzGA==",
+      "funding": [
+        {
+          "type": "github",
+          "url": "https://github.com/sponsors/twbs"
+        },
+        {
+          "type": "opencollective",
+          "url": "https://opencollective.com/bootstrap"
+        }
+      ],
+      "peerDependencies": {
+        "@popperjs/core": "^2.11.6"
       }
     },
     "node_modules/brace-expansion": {
@@ -6317,6 +6337,12 @@
         }
       }
     },
+    "@popperjs/core": {
+      "version": "2.11.6",
+      "resolved": "https://registry.npmjs.org/@popperjs/core/-/core-2.11.6.tgz",
+      "integrity": "sha512-50/17A98tWUfQ176raKiOGXuYpLyyVMkxxG6oylzL3BPOlA6ADGdK7EYunSa4I064xerltq9TGXs8HmOk5E+vw==",
+      "peer": true
+    },
     "@types/color-name": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/@types/color-name/-/color-name-1.1.1.tgz",
@@ -6656,9 +6682,10 @@
       }
     },
     "bootstrap": {
-      "version": "3.4.1",
-      "resolved": "https://registry.npmjs.org/bootstrap/-/bootstrap-3.4.1.tgz",
-      "integrity": "sha512-yN5oZVmRCwe5aKwzRj6736nSmKDX7pLYwsXiCj/EYmo16hODaBiT4En5btW/jhBF/seV+XMx3aYwukYC3A49DA=="
+      "version": "5.2.1",
+      "resolved": "https://registry.npmjs.org/bootstrap/-/bootstrap-5.2.1.tgz",
+      "integrity": "sha512-UQi3v2NpVPEi1n35dmRRzBJFlgvWHYwyem6yHhuT6afYF+sziEt46McRbT//kVXZ7b1YUYEVGdXEH74Nx3xzGA==",
+      "requires": {}
     },
     "brace-expansion": {
       "version": "1.1.11",
diff --git a/package.json b/package.json
index 2b563b13..bdd161ed 100644
--- a/package.json
+++ b/package.json
@@ -23,7 +23,7 @@
   },
   "homepage": "http://spectralworkbench.org",
   "dependencies": {
-    "bootstrap": "~3.4.0",
+    "bootstrap": "~5.2.1",
     "d3": "^3.5.4",
     "flot": "~0.8.0-alpha",
     "font-awesome": "~4.7.0",