diff --git a/pkgs/development/libraries/s2n-tls/default.nix b/pkgs/development/libraries/s2n-tls/default.nix
index 35a37fbddb86..395e5d0c75d6 100644
--- a/pkgs/development/libraries/s2n-tls/default.nix
+++ b/pkgs/development/libraries/s2n-tls/default.nix
@@ -6,13 +6,13 @@
 
 stdenv.mkDerivation rec {
   pname = "s2n-tls";
-  version = "1.3.0";
+  version = "1.3.4";
 
   src = fetchFromGitHub {
     owner = "aws";
     repo = pname;
     rev = "v${version}";
-    sha256 = "sha256-gd91thIcJO6Bhn1ENkW0k2iDzu1CvSYwWVv0VEM9umU=";
+    hash = "sha256-/kZI/NOZO8T5jlG9Qtfr14aCJDKrP7wEQLgJ6qe9VzY=";
   };
 
   nativeBuildInputs = [ cmake ];