diff --git a/pkgs/top-level/emacs-packages.nix b/pkgs/top-level/emacs-packages.nix
index ef2b505eaa5e..26a40a42ae14 100644
--- a/pkgs/top-level/emacs-packages.nix
+++ b/pkgs/top-level/emacs-packages.nix
@@ -503,6 +503,32 @@ let self = _self // overrides;
     };
   };
 
+  flycheck = melpaBuild rec {
+    pname   = "flycheck";
+    version = "0.23";
+    src = fetchFromGitHub {
+      owner  = pname;
+      repo   = pname;
+      rev    = version;
+      sha256 = "1ydk1wa7h7z9qw7prfvszxrmy2dyzsdij3xdy10rq197xnrw94wz";
+    };
+    packageRequires = [ dash let-alist pkg-info ];
+    meta = { license = gpl3Plus; };
+  };
+
+  flycheck-haskell = melpaBuild rec {
+    pname   = "flycheck-haskell";
+    version = "0.7.2";
+    src = fetchFromGitHub {
+      owner  = "flycheck";
+      repo   = pname;
+      rev    = version;
+      sha256 = "0143lcn6g46g7skm4r6lqq09s8mr3268rikbzlh65qg80rpg9frj";
+    };
+    packageRequires = [ dash flycheck haskell-mode let-alist pkg-info ];
+    meta = { license = gpl3Plus; };
+  };
+
   flycheck-pos-tip = melpaBuild rec {
     pname   = "flycheck-pos-tip";
     version = "20140813";
@@ -516,19 +542,6 @@ let self = _self // overrides;
     meta = { license = gpl3Plus; };
   };
 
-  flycheck = melpaBuild rec {
-    pname   = "flycheck";
-    version = "0.20";
-    src = fetchFromGitHub {
-      owner  = pname;
-      repo   = pname;
-      rev    = version;
-      sha256 = "0cq7y7ssm6phvx5pfv2yqq4j0yqmm0lhjav7v4a8ql7094cd790a";
-    };
-    packageRequires = [ dash pkg-info ];
-    meta = { license = gpl3Plus; };
-  };
-
   ghc-mod = melpaBuild rec {
     pname = "ghc";
     version = external.ghc-mod.version;
@@ -788,6 +801,20 @@ let self = _self // overrides;
     meta = { license = gpl3Plus; };
   };
 
+  let-alist = melpaBuild rec {
+    pname   = "let-alist";
+    version = "1.0.4";
+    src = fetchurl {
+      url    = "http://elpa.gnu.org/packages/${pname}-${version}.el";
+      sha256 = "07312bvvyz86lf64vdkxg2l1wgfjl25ljdjwlf1bdzj01c4hm88x";
+    };
+    unpackPhase = "true";
+    buildPhase = ''
+      cp $src ${pname}-${version}.el
+    '';
+    meta = { license = gpl3Plus; };
+  };
+
   log4e = melpaBuild rec {
     pname = "log4e";
     version = "0.3.0";