diff --git a/pkgs/development/libraries/haskell/tls/default.nix b/pkgs/development/libraries/haskell/tls/default.nix
index 45cb3c693944..61f3d118df5d 100644
--- a/pkgs/development/libraries/haskell/tls/default.nix
+++ b/pkgs/development/libraries/haskell/tls/default.nix
@@ -9,8 +9,8 @@
 
 cabal.mkDerivation (self: {
   pname = "tls";
-  version = "1.2.9";
-  sha256 = "1cwhwxpsxx9x5hv2c66d3yvbs84lrgaxmaz18skidmhqhs4i0sjy";
+  version = "1.2.10";
+  sha256 = "1zxkay5l5wlvxamrnnj376a7kydvbki32vxjl029a3wmzzsshs8n";
   buildDepends = [
     asn1Encoding asn1Types byteable cereal cipherAes cipherDes
     cipherRc4 cryptoCipherTypes cryptohash cryptoNumbers cryptoPubkey