diff --git a/src/models/contact.js b/src/models/contact.js
index f2e0846829..1ff345f543 100644
--- a/src/models/contact.js
+++ b/src/models/contact.js
@@ -66,7 +66,13 @@ export default class Contact {
 
 		// if no rev set, init one
 		if (!this.vCard.hasProperty('rev')) {
-			this.vCard.addPropertyWithValue('rev', ICAL.VCardTime.now().convertToZone(ICAL.Timezone.utcTimezone))
+			const version = this.vCard.getFirstPropertyValue('version')
+			if (version === '4.0') {
+				this.vCard.addPropertyWithValue('rev', ICAL.Time.fromJSDate(new Date(), true))
+			}
+			if (version === '3.0') {
+				this.vCard.addPropertyWithValue('rev', ICAL.VCardTime.fromDateAndOrTimeString(new Date().toISOString(), 'date-time'))
+			}
 		}
 	}
 
diff --git a/src/services/checks/invalidREV.js b/src/services/checks/invalidREV.js
index 6a75c227b7..a4128f48ce 100644
--- a/src/services/checks/invalidREV.js
+++ b/src/services/checks/invalidREV.js
@@ -14,25 +14,10 @@ export default {
 	run: contact => {
 		try {
 			const hasRev = contact.vCard.hasProperty('rev')
-			const rev = hasRev && contact.vCard.getFirstProperty('rev')
-			const revValue = rev && rev.getFirstValue()
-
-			if (revValue) {
-				const version = contact.version
-				const type = revValue.icalclass
-
-				if (version === '3.0' && type === 'vcardtime') {
-					return false
-				}
-
-				if (version === '4.0' && type === 'icaltime') {
-					return false
-				}
-			}
+			return !hasRev
 		} catch (error) {
 			return true
 		}
-		return true
 	},
 
 	fix: contact => {
@@ -40,11 +25,18 @@ export default {
 			// removing old invalid data
 			contact.vCard.removeProperty('rev')
 
-			// creatiing new value
-			contact.vCard.addPropertyWithValue('rev', ICAL.VCardTime.now().convertToZone(ICAL.Timezone.utcTimezone))
+			// creating new value
+			const version = contact.version
+			if (version === '4.0') {
+				contact.vCard.addPropertyWithValue('rev', ICAL.Time.fromJSDate(new Date(), true))
+			}
+			if (version === '3.0') {
+				contact.vCard.addPropertyWithValue('rev', ICAL.VCardTime.fromDateAndOrTimeString(new Date().toISOString(), 'date-time'))
+			}
 
 			return true
 		} catch (error) {
+			console.error('Error fixing invalid REV:', error)
 			return false
 		}
 	},
diff --git a/src/store/contacts.js b/src/store/contacts.js
index 945793f079..855dd8f385 100644
--- a/src/store/contacts.js
+++ b/src/store/contacts.js
@@ -331,6 +331,12 @@ const actions = {
 		validate(contact)
 
 		// Update REV
+		if (contact.version === '4.0') {
+			contact.rev = ICAL.Time.fromJSDate(new Date(), true)
+		}
+		if (contact.version === '3.0') {
+			contact.rev = ICAL.VCardTime.fromDateAndOrTimeString(new Date().toISOString(), 'date-time')
+		}
 		contact.rev = ICAL.VCardTime.now().convertToZone(ICAL.Timezone.utcTimezone)
 
 		const vData = contact.toStringStripQuotes()
diff --git a/src/views/Contacts.vue b/src/views/Contacts.vue
index 9f9f74656b..45db13d8c2 100644
--- a/src/views/Contacts.vue
+++ b/src/views/Contacts.vue
@@ -292,7 +292,7 @@ export default {
 
 			contact.fullName = t('contacts', 'Name')
 
-			contact.rev = ICAL.VCardTime.now().convertToZone(ICAL.Timezone.utcTimezone)
+			contact.rev = ICAL.Time.fromJSDate(new Date(), true)
 
 			// itterate over all properties (filter is not usable on objects and we need the key of the property)
 			const properties = rfcProps.properties