diff --git a/pkgs/development/libraries/haskell/tls/1.2.2.nix b/pkgs/development/libraries/haskell/tls/1.2.3.nix
similarity index 63%
rename from pkgs/development/libraries/haskell/tls/1.2.2.nix
rename to pkgs/development/libraries/haskell/tls/1.2.3.nix
index 638299d4a42..5906413796d 100644
--- a/pkgs/development/libraries/haskell/tls/1.2.2.nix
+++ b/pkgs/development/libraries/haskell/tls/1.2.3.nix
@@ -1,5 +1,5 @@
-{ cabal, asn1Encoding, asn1Types, cereal, cipherAes, cipherRc4
-, cprngAes, cryptohash, cryptoNumbers, cryptoPubkey
+{ cabal, asn1Encoding, asn1Types, byteable, cereal, cipherAes
+, cipherRc4, cprngAes, cryptohash, cryptoNumbers, cryptoPubkey
 , cryptoPubkeyTypes, cryptoRandom, dataDefaultClass, mtl, network
 , QuickCheck, testFramework, testFrameworkQuickcheck2, time, x509
 , x509Store, x509Validation
@@ -7,12 +7,13 @@
 
 cabal.mkDerivation (self: {
   pname = "tls";
-  version = "1.2.2";
-  sha256 = "156l859mfpdax5rg1frwa5ms5bzggaja0mi795hh8i5c3ah7hfcp";
+  version = "1.2.3";
+  sha256 = "0vv81z5m223b90zzfp5dk376fh8yngyd8h9anrxjrqb4f3bycaxg";
   buildDepends = [
-    asn1Encoding asn1Types cereal cipherAes cipherRc4 cryptohash
-    cryptoNumbers cryptoPubkey cryptoPubkeyTypes cryptoRandom
-    dataDefaultClass mtl network x509 x509Store x509Validation
+    asn1Encoding asn1Types byteable cereal cipherAes cipherRc4
+    cryptohash cryptoNumbers cryptoPubkey cryptoPubkeyTypes
+    cryptoRandom dataDefaultClass mtl network x509 x509Store
+    x509Validation
   ];
   testDepends = [
     cereal cprngAes cryptoPubkey cryptoRandom dataDefaultClass mtl
diff --git a/pkgs/top-level/haskell-packages.nix b/pkgs/top-level/haskell-packages.nix
index cf846778087..16405f53da6 100644
--- a/pkgs/top-level/haskell-packages.nix
+++ b/pkgs/top-level/haskell-packages.nix
@@ -2479,8 +2479,8 @@ let result = let callPackage = x : y : modifyPrio (newScope result.finalReturn x
   timeCompat = callPackage ../development/libraries/haskell/time-compat {};
 
   tls_1_1_5 = callPackage ../development/libraries/haskell/tls/1.1.5.nix {};
-  tls_1_2_2 = callPackage ../development/libraries/haskell/tls/1.2.2.nix {};
-  tls = self.tls_1_2_2;
+  tls_1_2_3 = callPackage ../development/libraries/haskell/tls/1.2.3.nix {};
+  tls = self.tls_1_2_3;
 
   tlsExtra = callPackage ../development/libraries/haskell/tls-extra {
     tls = self.tls_1_1_5;