diff --git a/.gitignore b/.gitignore
index e16c386..429f766 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1 @@
-SOURCES/nspr-4.30.tar.gz
+SOURCES/nspr-4.31.tar.gz
diff --git a/.nspr.metadata b/.nspr.metadata
index 8c35809..cd40c4e 100644
--- a/.nspr.metadata
+++ b/.nspr.metadata
@@ -1 +1 @@
-58761ad70dc57f2d5600dd70684791cf36cac02b SOURCES/nspr-4.30.tar.gz
+3001e873da7535e03a91339e7b55aca6f9f83914 SOURCES/nspr-4.31.tar.gz
diff --git a/SPECS/nspr.spec b/SPECS/nspr.spec
index ed4b2d9..503e938 100644
--- a/SPECS/nspr.spec
+++ b/SPECS/nspr.spec
@@ -1,4 +1,4 @@
-%global nspr_version 4.30.0
+%global nspr_version 4.31.0
 
 # The upstream omits the trailing ".0", while we need it for
 # consistency with the pkg-config version:
@@ -13,7 +13,7 @@ Name:           nspr
 Version:        %{nspr_version}
 Release:        1%{?dist}
 License:        MPLv2.0
-URL:            http://ftp.mozilla.org/pub/nspr/releases/${nspr_archive_version}/src
+URL:            http://ftp.mozilla.org/pub/nspr/releases/v${nspr_archive_version}/src
 Group:          System Environment/Libraries
 Conflicts:      filesystem < 3
 BuildRequires:  gcc
@@ -152,6 +152,9 @@ done
 %{_mandir}/man*/*
 
 %changelog
+* Thu Jun 17 2021 Bob Relyea <rrelyea@redhat.com> - 4.31.0-1
+- Update to NSPR 4.31
+
 * Tue Jun 1 2021 Bob Relyea <rrelyea@redhat.com> - 4.30.0-1
 - Update to NSPR 4.30