diff --git a/.gitignore b/.gitignore
index 9a9f386..bf8ae57 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,2 @@
-SOURCES/nspr-4.20.tar.gz
+SOURCES/nspr-4.21.tar.gz
 SOURCES/nspr-config.xml
diff --git a/.nspr.metadata b/.nspr.metadata
index cac169b..67d563a 100644
--- a/.nspr.metadata
+++ b/.nspr.metadata
@@ -1,2 +1,2 @@
-ef1e2ca3205fd1658a69ada2e0436266ca3065b5 SOURCES/nspr-4.20.tar.gz
+0ae8c710a52775e209b96aa6220362837b79b6c3 SOURCES/nspr-4.21.tar.gz
 f748a225d13fc55d8843c93002a6e8b79cd3779d SOURCES/nspr-config.xml
diff --git a/SPECS/nspr.spec b/SPECS/nspr.spec
index 67c251c..aae4f05 100644
--- a/SPECS/nspr.spec
+++ b/SPECS/nspr.spec
@@ -1,4 +1,4 @@
-%global nspr_version 4.20.0
+%global nspr_version 4.21.0
 
 # The upstream omits the trailing ".0", while we need it for
 # consistency with the pkg-config version:
@@ -152,6 +152,12 @@ done
 %{_mandir}/man*/*
 
 %changelog
+* Fri May 24 2019 Daiki Ueno <dueno@redhat.com> - 4.21.0-2
+- Rebuild
+
+* Thu May 23 2019 Daiki Ueno <dueno@redhat.com> - 4.21.0-1
+- Update to NSPR 4.21
+
 * Wed Oct  3 2018 Daiki Ueno <dueno@redhat.com> - 4.20.0-2
 - Prefer GCC atomics on i686 and x86_64