diff --git a/GMCM.Rproj b/GMCM.Rproj
index 21d0e89..553c7e9 100644
--- a/GMCM.Rproj
+++ b/GMCM.Rproj
@@ -18,7 +18,7 @@ StripTrailingWhitespace: Yes
 BuildType: Package
 PackageUseDevtools: Yes
 PackageInstallArgs: --resave-data
-PackageBuildArgs: --resave-data --compact-vignettes
+PackageBuildArgs: --resave-data --compact-vignettes="gs+qpdf"
 PackageBuildBinaryArgs: --resave-data
 PackageCheckArgs: --as-cran
 PackageRoxygenize: rd,namespace