diff --git a/.gitignore b/.gitignore
index 179dd20..4cb5d69 100644
--- a/.gitignore
+++ b/.gitignore
@@ -35,3 +35,5 @@ libtasn1-2.7.tar.gz
 /libtasn1-4.10.tar.gz.sig
 /libtasn1-4.12.tar.gz.sig
 /libtasn1-4.12.tar.gz
+/libtasn1-4.13.tar.gz.sig
+/libtasn1-4.13.tar.gz
diff --git a/libtasn1.spec b/libtasn1.spec
index f60d649..cc669f6 100644
--- a/libtasn1.spec
+++ b/libtasn1.spec
@@ -1,7 +1,7 @@
 Summary:	The ASN.1 library used in GNUTLS
 Name:		libtasn1
-Version:	4.12
-Release:	3%{?dist}
+Version:	4.13
+Release:	1%{?dist}
 
 # The libtasn1 library is LGPLv2+, utilities are GPLv3+
 License:	GPLv3+ and LGPLv2+
@@ -108,6 +108,9 @@ test "$1" = 0 -a -f %_infodir/%name.info.gz && \
 
 
 %changelog
+* Wed Jan 17 2018 Nikos Mavrogiannopoulos <nmav@redhat.com> - 4.13-1
+- Update to 4.13 (#1535261)
+
 * Thu Aug 03 2017 Fedora Release Engineering <releng@fedoraproject.org> - 4.12-3
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_27_Binutils_Mass_Rebuild
 
diff --git a/sources b/sources
index 6892c20..7b4f364 100644
--- a/sources
+++ b/sources
@@ -1,2 +1,2 @@
-SHA512 (libtasn1-4.12.tar.gz.sig) = 9e3c9640d723e80f12d661fbb73baafa1e9a28f99833f6f52c17fa12c50a8a418348c005c082ed7dc63793932e7c5d25f78037aaa6ab56df79b87730a3b4eafa
-SHA512 (libtasn1-4.12.tar.gz) = 6c551670949881193e39122f72948e4999ff1ba377f9ee5963d0a4ad1b84256e4fe42e9f6d6a2aa9f7d4ef7acc0e5174fb5cc3df5298524cdeda92f4b8c104f7
+SHA512 (libtasn1-4.13.tar.gz.sig) = 87cd915d91a726acca460535ca381c9b8be66013c5e008a0e59ab93f0f118ac7526709db0924e218af298b703bcb7702189513e19681bc7b84e594e79069dca7
+SHA512 (libtasn1-4.13.tar.gz) = bf5b60a296795e0a8a4a658c0106492393aa7ce698e785256b3427c17215c2a5b6178a61a2043c93ea4334f754eabece20221ac8fef0fd5644086a3891d98a9f