diff --git a/package-lock.json b/package-lock.json
index bd30cd5708..df2bcb863c 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -18,7 +18,7 @@
         "@rails/activestorage": "^8.1.200",
         "@rails/ujs": "^7.1.600",
         "@stimulus-components/rails-nested-form": "^5.0.0",
-        "add-to-calendar-button": "^2.13.5",
+        "add-to-calendar-button": "^2.13.8",
         "bootstrap": "5.3.6",
         "bootstrap-datepicker": "^1.10.1",
         "bootstrap-scss": "^5.3.8",
@@ -4473,12 +4473,12 @@
       }
     },
     "node_modules/add-to-calendar-button": {
-      "version": "2.13.5",
-      "resolved": "https://registry.npmjs.org/add-to-calendar-button/-/add-to-calendar-button-2.13.5.tgz",
-      "integrity": "sha512-ZWq+t91ZbFLAkTYyoqcO+mmsD6x9kkqR+LIjzKvn8yNF07B+JVSTD3fVj1+FkVzcqnBzrRpKGD0YxGbjWaq1xQ==",
+      "version": "2.13.8",
+      "resolved": "https://registry.npmjs.org/add-to-calendar-button/-/add-to-calendar-button-2.13.8.tgz",
+      "integrity": "sha512-hgB2p3y05legI2x3lh3ye6unH4iDuZ7nSoCap/FQZlJ2zMoP6PltXuT4+zjM+ygMpRQ7AW1zcqhAufgmrCNqnw==",
       "license": "ELv2",
       "dependencies": {
-        "timezones-ical-library": "^1.10.0"
+        "timezones-ical-library": "^2.1.2"
       },
       "engines": {
         "node": ">=18.17.0",
@@ -13563,13 +13563,13 @@
       }
     },
     "node_modules/timezones-ical-library": {
-      "version": "1.10.0",
-      "resolved": "https://registry.npmjs.org/timezones-ical-library/-/timezones-ical-library-1.10.0.tgz",
-      "integrity": "sha512-aSwylC0FyyxMqMjkuaYz56HBhhooYabGT74CbTuY1uOeIcBXSQTXf+u/mTR0MWJFPQDe21REjex+4wt0OdFDpA==",
+      "version": "2.1.2",
+      "resolved": "https://registry.npmjs.org/timezones-ical-library/-/timezones-ical-library-2.1.2.tgz",
+      "integrity": "sha512-VW7gTRzrveUNdLaztWKlsgHRn1eagubRA/HHembnrh9xYDtDRwRWN+zWcNIE3QM+TpXikSJLp/jwxYQv7IJJvg==",
       "license": "Apache-2.0",
       "engines": {
-        "node": ">=18.17.0",
-        "npm": ">=9.6.7"
+        "node": ">=22.20.0",
+        "npm": ">=10.9.3"
       }
     },
     "node_modules/tmpl": {
diff --git a/package.json b/package.json
index 7039c798d3..50b36503ae 100644
--- a/package.json
+++ b/package.json
@@ -22,7 +22,7 @@
     "@rails/activestorage": "^8.1.200",
     "@rails/ujs": "^7.1.600",
     "@stimulus-components/rails-nested-form": "^5.0.0",
-    "add-to-calendar-button": "^2.13.5",
+    "add-to-calendar-button": "^2.13.8",
     "bootstrap": "5.3.6",
     "bootstrap-datepicker": "^1.10.1",
     "bootstrap-scss": "^5.3.8",