diff --git a/pkgs/top-level/haskell-packages.nix b/pkgs/top-level/haskell-packages.nix
index 30816764acd..08b7c875c90 100644
--- a/pkgs/top-level/haskell-packages.nix
+++ b/pkgs/top-level/haskell-packages.nix
@@ -2721,6 +2721,10 @@ self : let callPackage = x : y : modifyPrio (newScope self x y); in
   darcs = callPackage ../applications/version-management/darcs {};
 
   idris_plain = callPackage ../development/compilers/idris {
+    parsers = self.parsers_0_10_3;
+    trifecta = self.trifecta.override {
+      parsers = self.parsers_0_10_3;
+    };
     llvmGeneral = self.llvmGeneral_3_3_8_2;
     llvmGeneralPure = self.llvmGeneralPure_3_3_8_2;
   };