diff --git a/dub.sdl b/dub.sdl
index b618825..642a204 100644
--- a/dub.sdl
+++ b/dub.sdl
@@ -7,7 +7,10 @@
 
 targetPath "bin"
 
-dflags "-preview=in"
+dflags "-preview=in" platform="dmd"
+dflags "-preview=in" platform="ldc"
+//Disabled due to ICEs in gdc.
+//dflags "-fpreview=in" platform="gdc"
 // Deprecated module(s)
 excludedSourceFiles "source/dub/packagesupplier.d"