diff --git a/pkgs/development/libraries/haskell/yst/default.nix b/pkgs/development/libraries/haskell/yst/default.nix
index 30fa46b0ffb5..ac65ef9d917a 100644
--- a/pkgs/development/libraries/haskell/yst/default.nix
+++ b/pkgs/development/libraries/haskell/yst/default.nix
@@ -1,11 +1,11 @@
-{cabal, HStringTemplate, csv, pandoc, parsec, split, utf8String, xhtml, HsSyck}:
+{cabal, HStringTemplate, csv, pandoc, parsec, split, utf8String, xhtml, HsSyck, time}:
 
 cabal.mkDerivation (self : {
   pname = "yst";
   version = "0.2.3.2";
   sha256 = "b857e70db67d708e2edb61a1d6bc4eaff3abd2bc252b3605f66bf1760da4da4b";
   propagatedBuildInputs = [
-    HStringTemplate csv pandoc parsec split utf8String xhtml HsSyck
+    HStringTemplate csv pandoc parsec split utf8String xhtml HsSyck time
   ];
   meta = {
     description =
diff --git a/pkgs/top-level/haskell-packages.nix b/pkgs/top-level/haskell-packages.nix
index d6a803c436e7..3ab7c57e4896 100644
--- a/pkgs/top-level/haskell-packages.nix
+++ b/pkgs/top-level/haskell-packages.nix
@@ -179,6 +179,7 @@ rec {
     regexBase = regexBase_0_93_2;
     network = network_2_2_1_7;
     time = time_1_2_0_3;
+    pandoc = pandoc_newtime;
   };
 
   hamlet = callPackage ../development/libraries/haskell/hamlet {};
@@ -408,6 +409,11 @@ rec {
   pandoc = callPackage ../development/libraries/haskell/pandoc {
     HTTP = HTTP_4000_0_9;
     network = network_2_2_1_7;
+  };
+
+  pandoc_newtime = callPackage ../development/libraries/haskell/pandoc {
+    HTTP = HTTP_4000_0_9;
+    network = network_2_2_1_7;
     random = random_newtime;
   };
 
@@ -447,6 +453,8 @@ rec {
 
   RangedSets = callPackage ../development/libraries/haskell/Ranged-sets {};
 
+  random = callPackage ../development/libraries/haskell/random {};
+
   random_newtime = callPackage ../development/libraries/haskell/random {
     time = time_1_2_0_3;
   };