diff --git a/src/Network/GetLatestPostsPerBoardResponse.hs b/src/Network/GetLatestPostsPerBoardResponse.hs
index 29f03e3..361432a 100644
--- a/src/Network/GetLatestPostsPerBoardResponse.hs
+++ b/src/Network/GetLatestPostsPerBoardResponse.hs
@@ -14,7 +14,7 @@ data GetLatestPostsPerBoardResponse = GetLatestPostsPerBoardResponse
     , pathpart        :: String
     -- , post_id         :: Maybe Int64
     -- , board_post_id   :: Int64
-    , creation_time   :: UTCTime
+    , creation_time   :: Maybe UTCTime
     -- , thread_id       :: Int64
     -- , board_thread_id :: Integer
     } deriving (Show, Generic, FromJSON)
diff --git a/src/Sync.hs b/src/Sync.hs
index de5171d..fb88c04 100644
--- a/src/Sync.hs
+++ b/src/Sync.hs
@@ -174,7 +174,13 @@ syncWebsites csmr_settings = do
 
     let board_id_to_last_modified = Map.fromList $
             map
-                (\b -> (GLPPBR.board_id b, GLPPBR.creation_time b))
+                ( \b ->
+                    ( GLPPBR.board_id b
+                    -- set t = 0 if there are no posts on the board yet
+                    -- this way it will check all of the threads
+                    , fromMaybe (Lib.epochToUTCTime 0) $ GLPPBR.creation_time b
+                    )
+                )
                 latest_posts_per_board
 
     let site_name_to_site :: Map.Map String Site.Site =