diff --git a/pkgs/development/libraries/mbedtls/default.nix b/pkgs/development/libraries/mbedtls/default.nix
index c37aea46eed..7c7b82d9eef 100644
--- a/pkgs/development/libraries/mbedtls/default.nix
+++ b/pkgs/development/libraries/mbedtls/default.nix
@@ -1,11 +1,11 @@
 { stdenv, fetchurl, perl }:
 
 stdenv.mkDerivation rec {
-  name = "mbedtls-1.3.11";
+  name = "mbedtls-1.3.14";
 
   src = fetchurl {
     url = "https://polarssl.org/download/${name}-gpl.tgz";
-    sha256 = "1js1lk6hvw9l3nhjhnhzfazfbnlcmk229hmnlm7jli3agc1979b7";
+    sha256 = "1y3gr3kfai3d13j08r4pv42sh47nbfm4nqi9jq8c9d06qidr2xmy";
   };
 
   nativeBuildInputs = [ perl ];