diff --git a/pkgs/development/ocaml-modules/tls/default.nix b/pkgs/development/ocaml-modules/tls/default.nix
index 5aa3ecb0bf17..2ee01ed82194 100644
--- a/pkgs/development/ocaml-modules/tls/default.nix
+++ b/pkgs/development/ocaml-modules/tls/default.nix
@@ -6,12 +6,12 @@
 buildDunePackage rec {
   minimumOCamlVersion = "4.08";
 
-  version = "0.12.7";
+  version = "0.12.8";
   pname = "tls";
 
   src = fetchurl {
     url = "https://github.com/mirleft/ocaml-tls/releases/download/v${version}/tls-v${version}.tbz";
-    sha256 = "1c7hmcpcxn1bfa9cavqzriv7py2q7xfbdpb7kh1kb3j1qjap17dc";
+    sha256 = "0sgppvfnamfnsglw1cl801i1xqkxbs33g40kwmmqj2vqjcarm26a";
   };
 
   useDune2 = true;