diff --git a/.gitignore b/.gitignore
index e2951b8..7b095ce 100644
--- a/.gitignore
+++ b/.gitignore
@@ -42,3 +42,4 @@ TestUser51.cert
 /nss-3.46.1.tar.gz
 /nss-3.47.tar.gz
 /nss-3.47.1.tar.gz
+/nss-3.48.tar.gz
diff --git a/nss.spec b/nss.spec
index 2b687c6..45e5490 100644
--- a/nss.spec
+++ b/nss.spec
@@ -1,5 +1,5 @@
-%global nspr_version 4.23.0
-%global nss_version 3.47.1
+%global nspr_version 4.24.0
+%global nss_version 3.48.0
 %global unsupported_tools_directory %{_libdir}/nss/unsupported-tools
 %global saved_files_dir %{_libdir}/nss/saved
 %global dracutlibdir %{_prefix}/lib/dracut
@@ -43,7 +43,7 @@ rpm.define(string.format("nss_release_tag NSS_%s_RTM",
 Summary:          Network Security Services
 Name:             nss
 Version:          %{nss_version}
-Release:          4%{?dist}
+Release:          1%{?dist}
 License:          MPLv2.0
 URL:              http://www.mozilla.org/projects/security/pki/nss/
 Requires:         nspr >= %{nspr_version}
@@ -874,6 +874,9 @@ update-crypto-policies &> /dev/null || :
 
 
 %changelog
+* Fri Jan  3 2020 Daiki Ueno <dueno@redhat.com> - 3.48.0-1
+- Update to NSS 3.48
+
 * Tue Dec  3 2019 Daiki Ueno <dueno@redhat.com> - 3.47.1-4
 - Update nss-3.47-certdb-temp-cert.patch to avoid setting empty trust value
 
diff --git a/sources b/sources
index e15e2b4..2e36a5d 100644
--- a/sources
+++ b/sources
@@ -3,4 +3,4 @@ SHA512 (blank-cert9.db) = 2f8eab4c0612210ee47db8a3a80c1b58a0b43849551af78c7da403
 SHA512 (blank-key3.db) = 01f7314e9fc8a7c9aa997652624cfcde213d18a6b3bb31840c1a60bbd662e56b5bc3221d13874abb42ce78163b225a6dfce2e1326cf6dd29366ad9c28ba5a71c
 SHA512 (blank-key4.db) = 8fedae93af7163da23fe9492ea8e785a44c291604fa98e58438448efb69c85d3253fc22b926d5c3209c62e58a86038fd4d78a1c4c068bc00600a7f3e5382ebe7
 SHA512 (blank-secmod.db) = 06a2dbd861839ef6315093459328b500d3832333a34b30e6fac4a2503af337f014a4d319f0f93322409e719142904ce8bc08252ae9a4f37f30d4c3312e900310
-SHA512 (nss-3.47.1.tar.gz) = ddee53f58929e5f3849c9f88a3a6735453a258c3c32a7e3e73cc949e0b7ad2dff81b21db31c9c5e1ef3eb79d63c31660e38ce76c06ca54a5681dd611dc2e2ae9
+SHA512 (nss-3.48.tar.gz) = 71aefe323501dd8d750ed36606554f2e67ecb2bca85b55bc798d5dfc3a47f3d454348ca950971aaaafb16f6d847c098d2b1c40d40b50380e0c2540ed1b9a9e9a