diff --git a/src/Simplex/Chat/Library/Internal.hs b/src/Simplex/Chat/Library/Internal.hs
index ff79cfa01e..96727f7d3a 100644
--- a/src/Simplex/Chat/Library/Internal.hs
+++ b/src/Simplex/Chat/Library/Internal.hs
@@ -1240,7 +1240,7 @@ validateGroupRoster GroupRoster {version = ver, roster = entries} =
       | otherwise = rm : dedup (memberId : seen) rms
 
 -- Privileged members without a known key are skipped (recipients can't verify them).
-buildGroupRoster :: Int -> [GroupMember] -> GroupRoster
+buildGroupRoster :: VersionRoster -> [GroupMember] -> GroupRoster
 buildGroupRoster ver mods = GroupRoster {version = ver, roster = mapMaybe rosterMember mods}
   where
     rosterMember m@GroupMember {memberId, memberPubKey, memberRole}
@@ -2144,7 +2144,7 @@ sendGroupMessage' user gInfo members chatMsgEvent =
 bumpAndBroadcastRoster :: User -> GroupInfo -> CM ()
 bumpAndBroadcastRoster user gInfo = do
   vr <- chatVersionRange
-  let rosterVer = maybe 0 (+ 1) (rosterVersion gInfo)
+  let rosterVer = maybe (VersionRoster 0) (\(VersionRoster n) -> VersionRoster (n + 1)) (rosterVersion gInfo)
   (relays, roster) <- withStore' $ \db -> do
     relays <- getGroupRelayMembers db vr user gInfo
     mods <- getGroupRosterMembers db vr user gInfo
diff --git a/src/Simplex/Chat/Protocol.hs b/src/Simplex/Chat/Protocol.hs
index 6346979412..8943834234 100644
--- a/src/Simplex/Chat/Protocol.hs
+++ b/src/Simplex/Chat/Protocol.hs
@@ -356,7 +356,7 @@ data GrpMsgForward = GrpMsgForward
 -- | Owner-signed snapshot of the privileged (moderator/admin) set; owners are
 -- not included, their keys come from the link.
 data GroupRoster = GroupRoster
-  { version :: Int,
+  { version :: VersionRoster,
     roster :: [RosterMember]
   }
   deriving (Eq, Show)
diff --git a/src/Simplex/Chat/Store/Groups.hs b/src/Simplex/Chat/Store/Groups.hs
index f697014143..11c4fd0798 100644
--- a/src/Simplex/Chat/Store/Groups.hs
+++ b/src/Simplex/Chat/Store/Groups.hs
@@ -1401,13 +1401,13 @@ toGroupRelay ((groupRelayId, groupMemberId, chatRelayId, address, displayName, f
   let userChatRelay = UserChatRelay {chatRelayId, address, relayProfile = toRelayProfile (displayName, fullName, shortDescr, image), domains = T.splitOn "," domains, preset, tested = unBI <$> tested, enabled, deleted}
    in GroupRelay {groupRelayId, groupMemberId, userChatRelay, relayStatus, relayLink}
 
-setGroupRosterVersion :: DB.Connection -> GroupInfo -> Int -> IO ()
+setGroupRosterVersion :: DB.Connection -> GroupInfo -> VersionRoster -> IO ()
 setGroupRosterVersion db GroupInfo {groupId} v = do
   currentTs <- getCurrentTime
   DB.execute db "UPDATE groups SET roster_version = ?, updated_at = ? WHERE group_id = ?" (v, currentTs, groupId)
 
 -- Relay caches the verbatim signed roster (parts + sending owner + broker ts) to re-forward to joiners.
-setCachedGroupRoster :: DB.Connection -> GroupInfo -> Int -> GroupMemberId -> UTCTime -> SignedMsg -> IO ()
+setCachedGroupRoster :: DB.Connection -> GroupInfo -> VersionRoster -> GroupMemberId -> UTCTime -> SignedMsg -> IO ()
 setCachedGroupRoster db GroupInfo {groupId} v ownerGMId brokerTs SignedMsg {chatBinding, signatures, signedBody} = do
   currentTs <- getCurrentTime
   DB.execute
diff --git a/src/Simplex/Chat/Store/Shared.hs b/src/Simplex/Chat/Store/Shared.hs
index ccb871ae90..1e2ae342c6 100644
--- a/src/Simplex/Chat/Store/Shared.hs
+++ b/src/Simplex/Chat/Store/Shared.hs
@@ -665,7 +665,7 @@ type BusinessChatInfoRow = (Maybe BusinessChatType, Maybe MemberId, Maybe Member
 
 type GroupKeysRow = (Maybe C.PrivateKeyEd25519, Maybe C.PublicKeyEd25519, Maybe C.PrivateKeyEd25519)
 
-type GroupInfoRow = (Int64, GroupName, GroupName, Text, Maybe Text, Text, Maybe Text, Maybe ImageData, Maybe GroupType, Maybe ShortLinkContact, Maybe B64UrlByteString) :. (Maybe MsgFilter, Maybe BoolInt, BoolInt, Maybe GroupPreferences, Maybe GroupMemberAdmission) :. (UTCTime, UTCTime, Maybe UTCTime, Maybe UTCTime) :. PreparedGroupRow :. BusinessChatInfoRow :. (BoolInt, Maybe RelayStatus, Maybe UIThemeEntityOverrides, Int64, Maybe Int64, Maybe Int, Maybe CustomData, Maybe Int64, Int, Maybe ConnReqContact) :. GroupKeysRow :. GroupMemberRow
+type GroupInfoRow = (Int64, GroupName, GroupName, Text, Maybe Text, Text, Maybe Text, Maybe ImageData, Maybe GroupType, Maybe ShortLinkContact, Maybe B64UrlByteString) :. (Maybe MsgFilter, Maybe BoolInt, BoolInt, Maybe GroupPreferences, Maybe GroupMemberAdmission) :. (UTCTime, UTCTime, Maybe UTCTime, Maybe UTCTime) :. PreparedGroupRow :. BusinessChatInfoRow :. (BoolInt, Maybe RelayStatus, Maybe UIThemeEntityOverrides, Int64, Maybe Int64, Maybe VersionRoster, Maybe CustomData, Maybe Int64, Int, Maybe ConnReqContact) :. GroupKeysRow :. GroupMemberRow
 
 type GroupMemberRow = (GroupMemberId, GroupId, Int64, MemberId, VersionChat, VersionChat, GroupMemberRole, GroupMemberCategory, GroupMemberStatus, BoolInt, Maybe MemberRestrictionStatus) :. (Maybe Int64, Maybe GroupMemberId, ContactName, Maybe ContactId, ProfileId) :. ProfileRow :. (UTCTime, UTCTime) :. (Maybe UTCTime, Int64, Int64, Int64, Maybe UTCTime, Maybe C.PublicKeyEd25519, Maybe ShortLinkContact)
 
diff --git a/src/Simplex/Chat/Types.hs b/src/Simplex/Chat/Types.hs
index 8aea4951ee..1d4189173c 100644
--- a/src/Simplex/Chat/Types.hs
+++ b/src/Simplex/Chat/Types.hs
@@ -487,7 +487,7 @@ data GroupInfo = GroupInfo
     uiThemes :: Maybe UIThemeEntityOverrides,
     customData :: Maybe CustomData,
     groupSummary :: GroupSummary,
-    rosterVersion :: Maybe Int,
+    rosterVersion :: Maybe VersionRoster,
     membersRequireAttention :: Int,
     viaGroupLinkUri :: Maybe ConnReqContact,
     groupKeys :: Maybe GroupKeys
@@ -2030,6 +2030,17 @@ type VersionRangeChat = VersionRange ChatVersion
 pattern VersionChat :: Word16 -> VersionChat
 pattern VersionChat v = Version v
 
+data RosterVersion
+
+instance VersionScope RosterVersion
+
+type VersionRoster = Version RosterVersion
+
+pattern VersionRoster :: Word16 -> VersionRoster
+pattern VersionRoster v = Version v
+
+{-# COMPLETE VersionRoster #-}
+
 -- this newtype exists to have a concise JSON encoding of version ranges in chat protocol messages in the form of "1-2" or just "1"
 newtype ChatVersionRange = ChatVersionRange {fromChatVRange :: VersionRangeChat} deriving (Eq, Show)