diff --git a/package-lock.json b/package-lock.json
index bbf8658f..074c1216 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -23,7 +23,7 @@
         "@ngx-translate/http-loader": "8.0.0",
         "@popperjs/core": "2.11.8",
         "bootstrap": "5.3.3",
-        "date-fns": "3.6.0",
+        "date-fns": "4.1.0",
         "fp-ts": "2.16.9",
         "io-ts": "2.2.21",
         "io-ts-types": "0.5.19",
@@ -7610,9 +7610,9 @@
       }
     },
     "node_modules/date-fns": {
-      "version": "3.6.0",
-      "resolved": "https://registry.npmjs.org/date-fns/-/date-fns-3.6.0.tgz",
-      "integrity": "sha512-fRHTG8g/Gif+kSh50gaGEdToemgfj74aRX3swtiouboip5JDLAyDE9F11nHMIcvOaXeOC6D7SpNhi7uFyB7Uww==",
+      "version": "4.1.0",
+      "resolved": "https://registry.npmjs.org/date-fns/-/date-fns-4.1.0.tgz",
+      "integrity": "sha512-Ukq0owbQXxa/U3EGtsdVBkR1w7KOQ5gIBqdH2hkvknzZPYvBxb/aa6E8L7tmjFtkwZBu3UXBbjIgPo/Ez4xaNg==",
       "funding": {
         "type": "github",
         "url": "https://github.com/sponsors/kossnocorp"
diff --git a/package.json b/package.json
index 7ca19b40..340b69dd 100644
--- a/package.json
+++ b/package.json
@@ -47,7 +47,7 @@
     "@ngx-translate/http-loader": "8.0.0",
     "@popperjs/core": "2.11.8",
     "bootstrap": "5.3.3",
-    "date-fns": "3.6.0",
+    "date-fns": "4.1.0",
     "fp-ts": "2.16.9",
     "io-ts": "2.2.21",
     "io-ts-types": "0.5.19",
diff --git a/src/app/presence-control/services/presence-control-state.service.ts b/src/app/presence-control/services/presence-control-state.service.ts
index bc569574..f75804a0 100644
--- a/src/app/presence-control/services/presence-control-state.service.ts
+++ b/src/app/presence-control/services/presence-control-state.service.ts
@@ -68,9 +68,10 @@ export class PresenceControlStateService
   confirmBackLinkParams?: Params;
 
   private selectedDateSubject$ = new BehaviorSubject(new Date());
-  selectedDate$ = this.selectedDateSubject$
-    .asObservable()
-    .pipe(map(startOfDay), distinctUntilChanged(isEqual));
+  selectedDate$ = this.selectedDateSubject$.asObservable().pipe(
+    map((date) => startOfDay(date)),
+    distinctUntilChanged(isEqual),
+  );
 
   private viewModeSubject$ = new Subject<PresenceControlViewMode>();
   viewMode$ = merge(