diff --git a/pkgs/development/haskell-modules/configuration-common.nix b/pkgs/development/haskell-modules/configuration-common.nix
index 02b20ccd75c..4f93b2f857c 100644
--- a/pkgs/development/haskell-modules/configuration-common.nix
+++ b/pkgs/development/haskell-modules/configuration-common.nix
@@ -1068,4 +1068,7 @@ self: super: {
   # http://hydra.cryp.to/build/498404/log/raw
   dbus = dontCheck (appendPatch super.dbus ./patches/hdbus-semicolons.patch);
 
+  # Test suite occasionally runs for 1+ days on Hydra.
+  distributed-process-tests = dontCheck super.distributed-process-tests;
+
 }