diff --git a/pkgs/development/libraries/nspr/default.nix b/pkgs/development/libraries/nspr/default.nix
index 9fec80aa56ea..20cdb8d29c05 100644
--- a/pkgs/development/libraries/nspr/default.nix
+++ b/pkgs/development/libraries/nspr/default.nix
@@ -7,11 +7,11 @@
 
 stdenv.mkDerivation rec {
   pname = "nspr";
-  version = "4.34";
+  version = "4.34.1";
 
   src = fetchurl {
     url = "mirror://mozilla/nspr/releases/v${version}/src/nspr-${version}.tar.gz";
-    sha256 = "177rxcf3lglabs7sgwcvf72ww4v56qa71lc495wl13sxs4f03vxy";
+    hash = "sha256-xbg1TEi2Mrj0wZcGKBRsDgwMqPMscxXX1XNsAC4Dd08=";
   };
 
   patches = [