diff --git a/tests/Test.hs b/tests/Test.hs
index 8874e08211..907edab889 100644
--- a/tests/Test.hs
+++ b/tests/Test.hs
@@ -37,6 +37,11 @@ import Test.Hspec.Core.Spec (sequential)
 import UnliftIO.Temporary (withTempDirectory)
 import ValidNames
 import ViewTests
+#if MIN_VERSION_base(4,18,0)
+import Control.Concurrent (forkIO, threadDelay)
+import Control.Monad (forM_, void)
+import GHC.Conc.Sync (listThreads, threadLabel, threadStatus)
+#endif
 #if defined(dbPostgres)
 import Control.Exception (bracket_, finally)
 import PostgresSchemaDump
@@ -53,6 +58,7 @@ import WebRTCTests
 
 main :: IO ()
 main = do
+  dumpThreadsAfter 40
   setLogLevel LogError
 #if !defined(dbPostgres)
   chatQueryStats <- TM.emptyIO
@@ -141,3 +147,17 @@ main = do
 
 logCfg :: LogConfig
 logCfg = LogConfig {lc_file = Nothing, lc_stderr = True}
+
+dumpThreadsAfter :: Int -> IO ()
+#if MIN_VERSION_base(4,18,0)
+dumpThreadsAfter minutes = void . forkIO $ do
+  threadDelay $ minutes * 60000000
+  ts <- listThreads
+  putStrLn $ "=== " <> show (length ts) <> " threads after " <> show minutes <> " minutes"
+  forM_ ts $ \t -> do
+    s <- threadStatus t
+    l <- threadLabel t
+    putStrLn $ show t <> " " <> show s <> " " <> maybe "" id l
+#else
+dumpThreadsAfter _ = pure ()
+#endif