diff --git a/pkgs/development/libraries/nspr/default.nix b/pkgs/development/libraries/nspr/default.nix
index 17b8b9226d50..159f343cf4de 100644
--- a/pkgs/development/libraries/nspr/default.nix
+++ b/pkgs/development/libraries/nspr/default.nix
@@ -2,7 +2,7 @@
 , CoreServices ? null
 , buildPackages }:
 
-let version = "4.29"; in
+let version = "4.30"; in
 
 stdenv.mkDerivation {
   pname = "nspr";
@@ -10,7 +10,7 @@ stdenv.mkDerivation {
 
   src = fetchurl {
     url = "mirror://mozilla/nspr/releases/v${version}/src/nspr-${version}.tar.gz";
-    sha256 = "22286bdb8059d74632cc7c2865c139e63953ecfb33bf4362ab58827e86e92582";
+    sha256 = "0fwivizfz88625lwv1ngxirnal7w9csq1q9i7m6dr14l83wdhk4d";
   };
 
   patches = [