diff --git a/src/ATrade/QuoteSource/Client.hs b/src/ATrade/QuoteSource/Client.hs
index 460482e..b8444a0 100644
--- a/src/ATrade/QuoteSource/Client.hs
+++ b/src/ATrade/QuoteSource/Client.hs
@@ -3,6 +3,7 @@
 {-# LANGUAGE TupleSections     #-}
 
 module ATrade.QuoteSource.Client (
+  QuoteSourceClientHandle,
   QuoteData(..),
   startQuoteSourceClient,
   stopQuoteSourceClient,