diff --git a/.travis.yml b/.travis.yml
index 75f32e53b9..80f3be5490 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -62,8 +62,10 @@ matrix:
     - compiler: clang
       language: c
       os: osx
+      osx_image: xcode10.3
       env:
         - PATH="/usr/local/opt/gettext/bin:/usr/local/opt/ccache/libexec:/usr/local/opt/rpcgen/bin:$PATH"
+        - PKG_CONFIG_PATH="/usr/local/opt/libxml2/lib/pkgconfig"
       script:
         # We can't run 'distcheck' or 'syntax-check' because they fail on
         # macOS, but doing 'install' and 'dist' gives us some useful coverage