diff --git a/Formula/nspr.rb b/Formula/nspr.rb
index 7f56edb57a..c2dce18745 100644
--- a/Formula/nspr.rb
+++ b/Formula/nspr.rb
@@ -1,8 +1,8 @@
 class Nspr < Formula
   desc "Platform-neutral API for system-level and libc-like functions"
   homepage "https://developer.mozilla.org/docs/Mozilla/Projects/NSPR"
-  url "https://archive.mozilla.org/pub/mozilla.org/nspr/releases/v4.18/src/nspr-4.18.tar.gz"
-  sha256 "b89657c09bf88707d06ac238b8930d3ae08de68cb3edccfdc2e3dc97f9c8fb34"
+  url "https://archive.mozilla.org/pub/mozilla.org/nspr/releases/v4.19/src/nspr-4.19.tar.gz"
+  sha256 "2ed95917fa2277910d1d1cf36030607dccc0ba522bba08e2af13c113dcd8f729"
 
   bottle do
     cellar :any