diff --git a/srcpkgs/llvm/template b/srcpkgs/llvm/template
index d59573a47fd..b4aeb04be40 100644
--- a/srcpkgs/llvm/template
+++ b/srcpkgs/llvm/template
@@ -21,7 +21,7 @@ checksum="
 
 # XXX Investigate ocaml bindings.
 hostmakedepends="groff bsdtar perl python"
-makedepends="libffi-devel"
+makedepends="zlib-devel libffi-devel"
 
 post_extract() {
 	# Move clang files into the llvm source.