diff --git a/pkgs/development/libraries/nss/latest.nix b/pkgs/development/libraries/nss/latest.nix
index 21d4459a4f80..7d20d3c1913a 100644
--- a/pkgs/development/libraries/nss/latest.nix
+++ b/pkgs/development/libraries/nss/latest.nix
@@ -18,7 +18,7 @@ let
   #       It will rebuild itself using the version of this package (NSS) and if
   #       an update is required do the required changes to the expression.
   #       Example: nix-shell ./maintainers/scripts/update.nix --argstr package cacert
-  version = "3.71";
+  version = "3.73";
   underscoreVersion = builtins.replaceStrings ["."] ["_"] version;
 
 in stdenv.mkDerivation rec {
@@ -27,7 +27,7 @@ in stdenv.mkDerivation rec {
 
   src = fetchurl {
     url = "mirror://mozilla/security/nss/releases/NSS_${underscoreVersion}_RTM/src/${pname}-${version}.tar.gz";
-    sha256 = "0ly2l3dv6z5hlxs72h5x6796ni3x1bq60saavaf42ddgv4ax7b4r";
+    sha256 = "sha256-Vm06aNqbENfanvhOtP4YL48E4g2FxV0b82C7LACW2OU=";
   };
 
   depsBuildBuild = [ buildPackages.stdenv.cc ];