diff --git a/OpenImageIO.spec b/OpenImageIO.spec
index caa2cb6..632e448 100644
--- a/OpenImageIO.spec
+++ b/OpenImageIO.spec
@@ -1,7 +1,7 @@
 %global sover 1.8
 
 Name:           OpenImageIO
-Version:        1.8.14
+Version:        1.8.15
 Release:        1%{?dist}
 Summary:        Library for reading and writing images
 
@@ -106,6 +106,9 @@ rm -rf src/include/tbb
 #rm -rf ../oiio-images && mkdir ../oiio-images && pushd ../oiio-images
 #tar --strip-components=1 -xzf %{SOURCE1}
 
+# Try disabeling old CMP
+sed -i "s/SET CMP0046 OLD/SET CMP0046 NEW/" CMakeLists.txt
+
 
 %build
 rm -rf build/linux && mkdir -p build/linux && pushd build/linux
@@ -127,6 +130,7 @@ rm -rf build/linux && mkdir -p build/linux && pushd build/linux
 %endif
        -DJPEG_INCLUDE_DIR=%{_includedir} \
        -DOPENJPEG_INCLUDE_DIR=$(pkgconf --variable=includedir libopenjp2) \
+       -DOpenGL_GL_PREFERENCE=GLVND \
        -DVERBOSE=TRUE \
        ../../
 
@@ -174,6 +178,9 @@ cp -a src/doc/*.1 %{buildroot}%{_mandir}/man1
 
 
 %changelog
+* Tue Oct 02 2018 Richard Shaw <hobbes1069@gmail.com> - 1.8.15-1
+- Update to 1.8.15.
+
 * Mon Sep 03 2018 Richard Shaw <hobbes1069@gmail.com> - 1.8.14-1
 - Update to 1.8.14.
 
diff --git a/sources b/sources
index 8a3276b..a6cea3a 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (OpenImageIO-1.8.14.tar.gz) = 7e4c542d1732d8894105185adad548a79ba30dbebbe3a1e17a003a3e2ce976c9727280c893b72d240fd97c0ab9474adb3cb1f93452a3a81427780f7385b6fb1b
+SHA512 (OpenImageIO-1.8.15.tar.gz) = e022e5c7e300d3dd952bcf3476e1b676a8931f67ba6b3959b26c75b9709907ac1c1b99de651f5876045f9a333e325a161b0d5159cb5bf385eb4f9f90a04707c7