1 files changed, 1 insertions, 1 deletions
diff --git a/gf.cabal b/gf.cabal
index 9b427afa6..bbdf7d090 100644
--- a/gf.cabal
+++ b/gf.cabal
@@ -254,11 +254,11 @@ Library
     GF.Speech.SRGS_XML
     GF.Speech.VoiceXML
     GF.System.Catch
+    GF.System.Concurrency
     GF.System.Console
     GF.System.Directory
     GF.System.Process
     GF.System.Signal
---  GF.System.UseSignal
     GF.Text.Clitics
     GF.Text.Coding
     GF.Text.Lexing