diff --git a/.travis.yml b/.travis.yml
index e07f88e214..6e7e1065b5 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -20,10 +20,14 @@ matrix:
       rust: nightly
       env:
         - VS15=true
-        - VCPKG_ROOT=${HOME}/vcpkg
+        - VCPKG_ROOT=${HOME}\\vcpkg
         - VCPKGRS_DYNAMIC=1
         - VCPKG_DEFAULT_TRIPLET=x64-windows
         - TECTONIC_DEP_BACKEND=vcpkg
+        - RUST_TEST_THREADS=1
+        - FC_CACHEDIR=${VCPKG_ROOT}\\installed\\${VCPKG_DEFAULT_TRIPLET}\\tools\\fontconfig\\fonts\\cache
+        - FONTCONFIG_FILE=${VCPKG_ROOT}\\installed\\${VCPKG_DEFAULT_TRIPLET}\\tools\\fontconfig\\fonts\\fonts.conf
+        - FONTCONFIG_PATH=${VCPKG_ROOT}\\installed\\${VCPKG_DEFAULT_TRIPLET}\\tools\\fontconfig\\fonts\\conf.d
       script:
         - dist/prepare-win-ci-deps.bat
         - sh dist/travis.sh