diff --git a/pkgs/development/libraries/haskell/crypto-api/0.6.4.nix b/pkgs/development/libraries/haskell/crypto-api/0.6.4.nix
deleted file mode 100644
index e651d03b736f..000000000000
--- a/pkgs/development/libraries/haskell/crypto-api/0.6.4.nix
+++ /dev/null
@@ -1,18 +0,0 @@
-{ cabal, cereal, entropy, largeword, tagged }:
-
-cabal.mkDerivation (self: {
-  pname = "crypto-api";
-  version = "0.6.4";
-  sha256 = "1v3nnfw13r514a723lsx8d1awlad6fmv27bgp76f1ssv1garraf3";
-  buildDepends = [ cereal entropy largeword tagged ];
-  meta = {
-    homepage = "http://trac.haskell.org/crypto-api/wiki";
-    description = "A generic interface for cryptographic operations";
-    license = self.stdenv.lib.licenses.bsd3;
-    platforms = self.ghc.meta.platforms;
-    maintainers = [
-      self.stdenv.lib.maintainers.andres
-      self.stdenv.lib.maintainers.simons
-    ];
-  };
-})
diff --git a/pkgs/development/libraries/haskell/crypto-api/0.8.nix b/pkgs/development/libraries/haskell/crypto-api/default.nix
similarity index 100%
rename from pkgs/development/libraries/haskell/crypto-api/0.8.nix
rename to pkgs/development/libraries/haskell/crypto-api/default.nix
diff --git a/pkgs/top-level/haskell-packages.nix b/pkgs/top-level/haskell-packages.nix
index a35220400355..d92dca86ecd3 100644
--- a/pkgs/top-level/haskell-packages.nix
+++ b/pkgs/top-level/haskell-packages.nix
@@ -494,9 +494,7 @@ let result = let callPackage = x : y : modifyPrio (newScope result.final x y);
 
   Crypto = callPackage ../development/libraries/haskell/Crypto {};
 
-  cryptoApi_0_6_4 = callPackage ../development/libraries/haskell/crypto-api/0.6.4.nix {};
-  cryptoApi_0_8 = callPackage ../development/libraries/haskell/crypto-api/0.8.nix {};
-  cryptoApi = self.cryptoApi_0_6_4;
+  cryptoApi = callPackage ../development/libraries/haskell/crypto-api {};
 
   cryptocipher = callPackage ../development/libraries/haskell/cryptocipher {};