diff --git a/pkgs/development/libraries/haskell/DSH/default.nix b/pkgs/development/libraries/haskell/DSH/default.nix
index 8f525b18df6..725fe95cc8d 100644
--- a/pkgs/development/libraries/haskell/DSH/default.nix
+++ b/pkgs/development/libraries/haskell/DSH/default.nix
@@ -4,8 +4,8 @@
 
 cabal.mkDerivation (self: {
   pname = "DSH";
-  version = "0.7.8";
-  sha256 = "1mlym2hs7sr78lih8c0yi5y5h14vxy3zpl3gfnidh9wiw5cai9lg";
+  version = "0.7.8.1";
+  sha256 = "1yz8rh3hkqc465slfzi7jqhjd1xrmcghjxl7zprxw082p2qvj8g5";
   buildDepends = [
     convertible csv FerryCore HaXml HDBC json mtl Pathfinder syb text
     xhtml
diff --git a/pkgs/development/libraries/haskell/certificate/default.nix b/pkgs/development/libraries/haskell/certificate/default.nix
index 7e77aa41f5e..019ff16733b 100644
--- a/pkgs/development/libraries/haskell/certificate/default.nix
+++ b/pkgs/development/libraries/haskell/certificate/default.nix
@@ -2,8 +2,8 @@
 
 cabal.mkDerivation (self: {
   pname = "certificate";
-  version = "1.2.1";
-  sha256 = "0lhw38jqkiw7dwckwcqwmsi9br1insb5dp8wajcpgas6xn6cy2qy";
+  version = "1.2.2";
+  sha256 = "0qwx0y534fa5p2wzxd5q2bvcsvmmvmy45rwzj01g6zyjzmx2rnsb";
   isLibrary = true;
   isExecutable = true;
   buildDepends = [ asn1Data cryptoPubkeyTypes mtl pem time ];
diff --git a/pkgs/development/libraries/haskell/language-c/default.nix b/pkgs/development/libraries/haskell/language-c/default.nix
index 154bc68c3c5..5b638ea9dab 100644
--- a/pkgs/development/libraries/haskell/language-c/default.nix
+++ b/pkgs/development/libraries/haskell/language-c/default.nix
@@ -2,8 +2,8 @@
 
 cabal.mkDerivation (self: {
   pname = "language-c";
-  version = "0.3.2.1";
-  sha256 = "1qk86p88p2jk1cbgl8p5g19ip3nh6z22ddj5jac58r5ny076iimx";
+  version = "0.4.2";
+  sha256 = "07pf4v4n7kvr5inkhs24b7g55pmkk4k5ihi6s5dbc200l01wz133";
   buildDepends = [ filepath syb ];
   buildTools = [ alex happy ];
   meta = {
diff --git a/pkgs/development/libraries/haskell/xhtml/3000.2.0.5.nix b/pkgs/development/libraries/haskell/xhtml/3000.2.1.nix
similarity index 78%
rename from pkgs/development/libraries/haskell/xhtml/3000.2.0.5.nix
rename to pkgs/development/libraries/haskell/xhtml/3000.2.1.nix
index 05e13b4a7b3..f1c11b790bb 100644
--- a/pkgs/development/libraries/haskell/xhtml/3000.2.0.5.nix
+++ b/pkgs/development/libraries/haskell/xhtml/3000.2.1.nix
@@ -2,8 +2,8 @@
 
 cabal.mkDerivation (self: {
   pname = "xhtml";
-  version = "3000.2.0.5";
-  sha256 = "1gqq910pncqppb2dscxnfxvm1ly4qpb5mwmady2i4irar3gngh9v";
+  version = "3000.2.1";
+  sha256 = "17qzc6kyiilhi8s25k68fbpyplihb1qxkpc6l93bvjrcchilsf22";
   meta = {
     homepage = "https://github.com/haskell/xhtml";
     description = "An XHTML combinator library";
diff --git a/pkgs/development/tools/parsing/alex/3.0.1.nix b/pkgs/development/tools/parsing/alex/3.0.2.nix
similarity index 84%
rename from pkgs/development/tools/parsing/alex/3.0.1.nix
rename to pkgs/development/tools/parsing/alex/3.0.2.nix
index 85e0474b745..ec56c74db77 100644
--- a/pkgs/development/tools/parsing/alex/3.0.1.nix
+++ b/pkgs/development/tools/parsing/alex/3.0.2.nix
@@ -2,8 +2,8 @@
 
 cabal.mkDerivation (self: {
   pname = "alex";
-  version = "3.0.1";
-  sha256 = "1w7s9kzgr4kfh6cyhb4qkvxwy9gcw3xa1d2k5dy575k3wk73awkj";
+  version = "3.0.2";
+  sha256 = "0r1i10i9svnd0ayd229d8hgndgc6q8ghabw6zzghwviw5hs36zlr";
   isLibrary = false;
   isExecutable = true;
   buildDepends = [ QuickCheck ];
diff --git a/pkgs/top-level/haskell-packages.nix b/pkgs/top-level/haskell-packages.nix
index 9a2d1a04b45..4ef2ca30983 100644
--- a/pkgs/top-level/haskell-packages.nix
+++ b/pkgs/top-level/haskell-packages.nix
@@ -153,15 +153,15 @@ let result = let callPackage = x : y : modifyPrio (newScope result.final x y);
     regexPosix   = self.regexPosix_0_95_1;      # 7.4.1 ok
     stm          = self.stm_2_3;                # 7.4.1 ok
     syb          = self.syb_0_3_6_1;            # 7.4.1 ok
-    xhtml        = self.xhtml_3000_2_0_5;       # 7.4.1 ok
+    xhtml        = self.xhtml_3000_2_1;         # 7.4.1 ok
     zlib         = self.zlib_0_5_3_3;           # 7.4.1 ok
     HTTP         = self.HTTP_4000_2_3;          # 7.4.1 ok
     text         = self.text_0_11_2_0;          # 7.4.1 ok
-    transformers = self.transformers_0_3_0_0;   # 7.4.1 ok
-    mtl          = self.mtl_2_1_1;              # 7.4.1 ok
+    transformers = self.transformers_0_2_2_0;   # 7.4.1 ok
+    mtl          = self.mtl_2_0_1_0;            # 7.4.1 ok
     random       = self.random_1_0_1_1;         # 7.4.1 ok
     cabalInstall = self.cabalInstall_0_14_0;    # 7.4.1 ok
-    alex         = self.alex_3_0_1;             # 7.4.1 ok
+    alex         = self.alex_3_0_2;             # 7.4.1 ok
     happy        = self.happy_1_18_9;           # 7.4.1 ok
     haddock      = self.haddock_2_10_0;         # 7.4.1 ok
   };
@@ -1522,8 +1522,8 @@ let result = let callPackage = x : y : modifyPrio (newScope result.final x y);
 
   xhtml_3000_2_0_1 = callPackage ../development/libraries/haskell/xhtml/3000.2.0.1.nix {};
   xhtml_3000_2_0_4 = callPackage ../development/libraries/haskell/xhtml/3000.2.0.4.nix {};
-  xhtml_3000_2_0_5 = callPackage ../development/libraries/haskell/xhtml/3000.2.0.5.nix {};
-  xhtml = self.xhtml_3000_2_0_5;
+  xhtml_3000_2_1 = callPackage ../development/libraries/haskell/xhtml/3000.2.1.nix {};
+  xhtml = self.xhtml_3000_2_1;
 
   xml = callPackage ../development/libraries/haskell/xml {};
 
@@ -1605,8 +1605,8 @@ let result = let callPackage = x : y : modifyPrio (newScope result.final x y);
   alex_2_3_2 = callPackage ../development/tools/parsing/alex/2.3.2.nix {};
   alex_2_3_3 = callPackage ../development/tools/parsing/alex/2.3.3.nix {};
   alex_2_3_5 = callPackage ../development/tools/parsing/alex/2.3.5.nix {};
-  alex_3_0_1 = callPackage ../development/tools/parsing/alex/3.0.1.nix {};
-  alex = self.alex_3_0_1;
+  alex_3_0_2 = callPackage ../development/tools/parsing/alex/3.0.2.nix {};
+  alex = self.alex_3_0_2;
 
   alexMeta = callPackage ../development/tools/haskell/alex-meta {};