diff --git a/frontend/package-lock.json b/frontend/package-lock.json
index 1182c5e6000b..d5e5cb01bfa6 100644
--- a/frontend/package-lock.json
+++ b/frontend/package-lock.json
@@ -52,7 +52,7 @@
         "@mantine/core": "^8.3.13",
         "@mantine/hooks": "^8.3.6",
         "@mantine/utils": "^6.0.22",
-        "@ng-select/ng-option-highlight": "^20.6.3",
+        "@ng-select/ng-option-highlight": "^21.1.4",
         "@ng-select/ng-select": "^20.1.0",
         "@ngneat/content-loader": "^7.0.0",
         "@openproject/octicons-angular": "^19.32.0",
@@ -7025,15 +7025,15 @@
       }
     },
     "node_modules/@ng-select/ng-option-highlight": {
-      "version": "20.6.3",
-      "resolved": "https://registry.npmjs.org/@ng-select/ng-option-highlight/-/ng-option-highlight-20.6.3.tgz",
-      "integrity": "sha512-PD0ri0i5BIzhZU4MgKWKYtOHDAzyvSv7m6/1OtyS7wl4rlas7EFEEzx/NqpI4Uyi217BP0rv3unBh7R7sK1UOQ==",
+      "version": "21.1.4",
+      "resolved": "https://registry.npmjs.org/@ng-select/ng-option-highlight/-/ng-option-highlight-21.1.4.tgz",
+      "integrity": "sha512-UFvlevjMSK9S0sCrd3tP0b46O4CR7Ughm3kdvgcxLN1qCoSqFvMLor4X1VHh81gHznXe1+E0zf97If3l9nO97A==",
       "dependencies": {
         "tslib": "^2.3.0"
       },
       "peerDependencies": {
-        "@angular/common": "^20.0.0",
-        "@angular/core": "^20.0.0"
+        "@angular/common": "^21.0.0",
+        "@angular/core": "^21.0.0"
       }
     },
     "node_modules/@ng-select/ng-select": {
@@ -29936,9 +29936,9 @@
       }
     },
     "@ng-select/ng-option-highlight": {
-      "version": "20.6.3",
-      "resolved": "https://registry.npmjs.org/@ng-select/ng-option-highlight/-/ng-option-highlight-20.6.3.tgz",
-      "integrity": "sha512-PD0ri0i5BIzhZU4MgKWKYtOHDAzyvSv7m6/1OtyS7wl4rlas7EFEEzx/NqpI4Uyi217BP0rv3unBh7R7sK1UOQ==",
+      "version": "21.1.4",
+      "resolved": "https://registry.npmjs.org/@ng-select/ng-option-highlight/-/ng-option-highlight-21.1.4.tgz",
+      "integrity": "sha512-UFvlevjMSK9S0sCrd3tP0b46O4CR7Ughm3kdvgcxLN1qCoSqFvMLor4X1VHh81gHznXe1+E0zf97If3l9nO97A==",
       "requires": {
         "tslib": "^2.3.0"
       }
diff --git a/frontend/package.json b/frontend/package.json
index 414ac60b4928..1235df900274 100644
--- a/frontend/package.json
+++ b/frontend/package.json
@@ -107,7 +107,7 @@
     "@mantine/core": "^8.3.13",
     "@mantine/hooks": "^8.3.6",
     "@mantine/utils": "^6.0.22",
-    "@ng-select/ng-option-highlight": "^20.6.3",
+    "@ng-select/ng-option-highlight": "^21.1.4",
     "@ng-select/ng-select": "^20.1.0",
     "@ngneat/content-loader": "^7.0.0",
     "@openproject/octicons-angular": "^19.32.0",