diff --git a/lsp-test/src/Language/LSP/Test.hs b/lsp-test/src/Language/LSP/Test.hs
index 7575f5e1f..5ce70bde4 100644
--- a/lsp-test/src/Language/LSP/Test.hs
+++ b/lsp-test/src/Language/LSP/Test.hs
@@ -26,6 +26,7 @@ module Language.LSP.Test
   , runSession
   , runSessionWithConfig
   , runSessionWithHandles
+  , runSessionWithHandles'
   -- ** Config
   , SessionConfig(..)
   , defaultConfig