diff --git a/.gitignore b/.gitignore
index 063407c..2fbf857 100644
--- a/.gitignore
+++ b/.gitignore
@@ -13,3 +13,4 @@ libdap-3.10.2.tar.gz
 /libdap-3.17.2.tar.gz
 /libdap-3.18.1.tar.gz
 /libdap-3.18.2.tar.gz
+/libdap-3.18.3.tar.gz
diff --git a/libdap.spec b/libdap.spec
index 380985c..2680e61 100644
--- a/libdap.spec
+++ b/libdap.spec
@@ -1,6 +1,6 @@
 Name: libdap
 Summary: The C++ DAP2 library from OPeNDAP
-Version: 3.18.2
+Version: 3.18.3
 Release: 1%{?dist}
 
 License: LGPLv2+
@@ -131,6 +131,9 @@ make check
 
 
 %changelog
+* Wed Jan 11 2017 Orion Poplawski <orion@cora.nwra.com> - 3.18.3-1
+- Update to 3.18.3
+
 * Tue Dec 6 2016 Orion Poplawski <orion@cora.nwra.com> - 3.18.2-1
 - Update to 3.18.2
 - Drop getopt and big endian baselines patches applied upstream
diff --git a/sources b/sources
index c15e6b9..2612d57 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-9bf02561f35ae0731a814c086a966962  libdap-3.18.2.tar.gz
+SHA512 (libdap-3.18.3.tar.gz) = 49be4fbd55c90bcc0c2ec23345642204f76f79d4eb05f44e7584cb58d2dddc9f3238dcb3baf9823b19d7c5d87aeb868be5d2426bd2c8f0ae344dc3a42217416e