diff --git a/.gitignore b/.gitignore
index dc25b09..2e99fbe 100644
--- a/.gitignore
+++ b/.gitignore
@@ -4,3 +4,4 @@
 /v0.10.0.tar.gz
 /v0.11.0.tar.gz
 /0.12.2.tar.gz
+/0.12.3.tar.gz
diff --git a/pywbem.spec b/pywbem.spec
index e0e460a..0e8a750 100644
--- a/pywbem.spec
+++ b/pywbem.spec
@@ -7,8 +7,8 @@
 %endif
 
 Name:           pywbem
-Version:        0.12.2
-Release:        3%{?dist}
+Version:        0.12.3
+Release:        1%{?dist}
 Summary:        Python WBEM client interface and related utilities
 Group:          Development/Libraries
 License:        LGPLv2
@@ -134,6 +134,9 @@ rm -rf %{buildroot}/usr/bin/*.bat
 %doc README.rst
 
 %changelog
+* Tue May 22 2018 Gris Ge <fge@redhat.com> - 0.12.3-1
+- Upgrade to 0.12.3
+
 * Fri May 18 2018 Gris Ge <fge@redhat.com> - 0.12.2-3
 - Fix build failure on F28- where python2 is enabled.
   Use %license macro.
diff --git a/sources b/sources
index 72f1b68..a7e4bee 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (0.12.2.tar.gz) = 9b8a812bdc1b725a6c75012668213f14989b835f60d1e7372a60ed6f9a964e47b04bd7f42cb9a02b0e494488f7f7180b355ce3942fef60015b5733c364183e44
+SHA512 (0.12.3.tar.gz) = 53aeecfe5e75efd95497d353498e8721d1881dfacc86a74a2ee09aaeaf2f17adc1842020e09effd85a532478fea6e825c8115e4c27e592e27bd37bd2b3f1c307