diff --git a/.travis/autobrew.py b/.travis/autobrew.py
index de149b2b..887bd259 100644
--- a/.travis/autobrew.py
+++ b/.travis/autobrew.py
@@ -12,11 +12,17 @@ class Ocrmypdf < Formula
   ${ocrmypdf_sha256}
 
   depends_on :python3
+  depends_on "pkg-config"
+  depends_on "libffi"
   depends_on "tesseract"
   depends_on "ghostscript"
   depends_on "unpaper"
   depends_on "qpdf"
 
+  # For Pillow source install
+  depends_on "openjpeg"
+  depends_on "freetype"
+
 ${resources}
 
   def install