diff --git a/glslang.spec b/glslang.spec
index f86635a..7fbf0dc 100644
--- a/glslang.spec
+++ b/glslang.spec
@@ -1,6 +1,6 @@
 %global commit 3bb4c48cd95892a5cfcd63df20fcc47fd51c97a0
 %global shortcommit %(c=%{commit}; echo ${c:0:7})
-%global commit_date 20180205
+%global commit_date 20180416
 %global gitrel .%{commit_date}.git%{shortcommit}
 
 Name:           glslang
@@ -44,6 +44,7 @@ pushd build
 %cmake3 -DCMAKE_BUILD_TYPE=Release \
         -DCMAKE_INSTALL_LIBDIR=%{_libdir} \
         -DCMAKE_SKIP_RPATH:BOOL=yes \
+        -DBUILD_SHARED_LIBS=OFF \
         -GNinja ..
 %{ninja_build}
 popd
@@ -78,7 +79,7 @@ install -pm 0644 build/StandAlone/libglslang-default-resource-limits.a %{buildro
 %{_libdir}/libglslang-default-resource-limits.a
 
 %changelog
-* Mon Apr 23 2018 Leigh Scott <leigh123linux@googlemail.com> - 3.1-0.8.20180205.git3bb4c48
+* Mon Apr 23 2018 Leigh Scott <leigh123linux@googlemail.com> - 3.1-0.8.20180416.git3bb4c48
 - Update for vulkan 1.1.73.0
 
 * Wed Mar 07 2018 Adam Williamson <awilliam@redhat.com> - 3.1-0.7.20180205.git2651cca