diff --git a/.gitignore b/.gitignore
index 099cc52..da2fedc 100644
--- a/.gitignore
+++ b/.gitignore
@@ -8,3 +8,4 @@
 /nspr-4.20.tar.gz
 /nspr-4.21.tar.gz
 /nspr-4.22.tar.gz
+/nspr-4.23.tar.gz
diff --git a/nspr.spec b/nspr.spec
index 19ff772..fee649e 100644
--- a/nspr.spec
+++ b/nspr.spec
@@ -1,4 +1,4 @@
-%global nspr_version 4.22.0
+%global nspr_version 4.23.0
 
 # The upstream omits the trailing ".0", while we need it for
 # consistency with the pkg-config version:
@@ -148,6 +148,9 @@ done
 %{_mandir}/man*/*
 
 %changelog
+* Fri Oct 18 2019 Daiki Ueno <dueno@redhat.com> - 4.23.0-1
+- Update to NSPR 4.23
+
 * Tue Sep  3 2019 Daiki Ueno <dueno@redhat.com> - 4.22.0-1
 - Update to NSPR 4.22
 
diff --git a/sources b/sources
index d467644..db839f7 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (nspr-4.22.tar.gz) = d34271f0692905162f71b02cf6f62a8ebf779159335e4ed286ee8d51faaad633a61c9392bada86d976bca2b5aa47c8760085de30dbd13c9cfa423582c31db37b
+SHA512 (nspr-4.23.tar.gz) = 19f964f11a6ae8acf83a6daa0c9ee141c6f2793fd79113f3d283e9590bc2c90bfa4e46814f902f376f15c0668fa9c283cc44f975d88461d8854b87b67c0a21c1