diff --git a/stack.full.yaml b/stack.full.yaml
index 690ad4b99..7e5a8fd36 100644
--- a/stack.full.yaml
+++ b/stack.full.yaml
@@ -10,6 +10,11 @@ flags:
   pandoc-citeproc:
     bibutils: true
     embed_data_files: true
+# if you are on OSX, stack install cpphs and
+# uncomment the following three lines:
+#ghc-options:
+#  pandoc-citeproc:  '-pgmP cpphs -optP--cpp'
+#  highlighting-kate: '-pgmP cpphs -optP--cpp'
 packages:
 - '.'
 - '../pandoc-citeproc'
@@ -19,4 +24,5 @@ extra-deps:
 - http-client-tls-0.3.0
 - data-default-instances-base-0.1.0.1
 - cmark-0.5.3.1
+- aeson-pretty-0.8.1
 resolver: nightly-2016-07-11