diff --git a/krb5-mini.spec b/krb5-mini.spec
index 67c7fd5..7fcf94e 100644
--- a/krb5-mini.spec
+++ b/krb5-mini.spec
@@ -52,8 +52,8 @@ Conflicts:      krb5-server
 Conflicts:      krb5-plugin-kdb-ldap
 Conflicts:      krb5-plugin-preauth-pkinit
 Conflicts:      krb5-plugin-preauth-otp
-Source0:        https://web.mit.edu/kerberos/dist/krb5/1.17/krb5-%{version}.tar.gz
-Source1:        https://web.mit.edu/kerberos/dist/krb5/1.17/krb5-%{version}.tar.gz.asc
+Source0:        https://web.mit.edu/kerberos/dist/krb5/1.18/krb5-%{version}.tar.gz
+Source1:        https://web.mit.edu/kerberos/dist/krb5/1.18/krb5-%{version}.tar.gz.asc
 Source2:        krb5.keyring
 Source3:        vendor-files.tar.bz2
 Source4:        baselibs.conf
diff --git a/krb5.spec b/krb5.spec
index 48fa4b3..ed958a1 100644
--- a/krb5.spec
+++ b/krb5.spec
@@ -46,8 +46,8 @@ BuildRequires:  pkgconfig(systemd)
 Obsoletes:      krb5-64bit
 %endif
 Conflicts:      krb5-mini
-Source0:        https://web.mit.edu/kerberos/dist/krb5/1.17/krb5-%{version}.tar.gz
-Source1:        https://web.mit.edu/kerberos/dist/krb5/1.17/krb5-%{version}.tar.gz.asc
+Source0:        https://web.mit.edu/kerberos/dist/krb5/1.18/krb5-%{version}.tar.gz
+Source1:        https://web.mit.edu/kerberos/dist/krb5/1.18/krb5-%{version}.tar.gz.asc
 Source2:        krb5.keyring
 Source3:        vendor-files.tar.bz2
 Source4:        baselibs.conf