diff --git a/sources b/sources
index 94a7633..dd07c03 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (tpm2-tss-2.3.0.tar.gz) = de1840b6fa772207927b25d7235b48f810a626fe57a37e40d82c2dfd9fde91c257c14455e291417174733bddacf49d5b1fb108cce2a7b22b62f6412ecf66d877
+SHA512 (tpm2-tss-2.3.1.tar.gz) = f218da271b53745df9aae32b45326bb2cec46da77b8360238eeaec39679a92a9f6a92d3ce86cb5f22a075c280b2317e6ab0b3ea6674390ffc4bd548b161bd553
diff --git a/tpm2-tss.spec b/tpm2-tss.spec
index 25b4d7c..58387e2 100644
--- a/tpm2-tss.spec
+++ b/tpm2-tss.spec
@@ -1,5 +1,5 @@
 Name:           tpm2-tss
-Version:        2.3.0
+Version:        2.3.1
 Release:        1%{?dist}
 Summary:        TPM2.0 Software Stack
 
@@ -87,6 +87,9 @@ use tpm2-tss.
 %ldconfig_scriptlets
 
 %changelog
+* Fri Sep 6 2019 Yunying Sun <yunying.sun@intel.com> - 2.3.1-1
+- Update to 2.3.1 release
+
 * Thu Aug 15 2019 Yunying Sun <yunying.sun@intel.com> - 2.3.0-1
 - Update to 2.3.0 release