diff --git a/.gitignore b/.gitignore
index 873fad3..052980e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,3 +3,4 @@
 /swtpm-0143c41.tar.gz
 /swtpm-c782a85.tar.gz
 /swtpm-05d8160.tar.gz
+/swtpm-8b9484a.tar.gz
diff --git a/sources b/sources
index ff47be5..1b88a21 100644
--- a/sources
+++ b/sources
@@ -1,2 +1,2 @@
-SHA512 (swtpm.spec) = 4bfa965206f91eb673c633d987f4cb274f4741b982a868204a76cf36d06c904b5fe01c433049dc1986b36537ff69a1a4b485f777dc0971d5342edb2e6f98a67c
-SHA512 (swtpm-05d8160.tar.gz) = 1b19af3b74c63f380721d885bc44e8cf9d24a230aa53985887b2067fa7f37fc3cd1e3358ba96048b2684851ddda142f720671502db5fb68169ab24e439838abe
+SHA512 (swtpm.spec) = 9c6fb609b4821b1c414aaa5ad86de465c4d92d92102f5de7f9ee4bbe70de1381fe23dab7878444781c224b8514f863e6cc642b6ffe44c7df3cc5100df757e77b
+SHA512 (swtpm-8b9484a.tar.gz) = 5aa96e3b28b76006f63e7f473b1427f97e9fe058491437f46e6ba1057a9a42dea0b2b7dcc75bc64eb1be64f650ad988c41d6627d9fd4cce66bf17293c5caac5e
diff --git a/swtpm.spec b/swtpm.spec
index f441060..69959e7 100644
--- a/swtpm.spec
+++ b/swtpm.spec
@@ -1,7 +1,7 @@
 %bcond_without gnutls
 
-%global gitdate     20181106
-%global gitcommit   05d81603639b7e1df53e3a4acf1cbdd3fa715e84
+%global gitdate     20181212
+%global gitcommit   8b9484a35063a9a07c93051b2dae0b69d9d9676e
 %global gitshortcommit  %(c=%{gitcommit}; echo ${c:0:7})
 
 # Macros needed by SELinux
@@ -162,6 +162,9 @@ fi
 %attr( 755, tss, tss) %{_localstatedir}/lib/swtpm-localca
 
 %changelog
+* Wed Dec 12 2018 Stefan Berger <stefanb@linux.ibm.com> - 0.1.0-0.20181212git8b9484a
+- Follow improvements in swtpm repo primarily related to fixes for 'ubsan'
+
 * Tue Nov 06 2018 Stefan Berger <stefanb@linux.ibm.com> - 0.1.0-0.20181106git05d8160
 - Follow improvements in swtpm repo
 - Remove ownership change of swtpm_setup.sh; have root own the file as required