diff --git a/docs/cookbook.rst b/docs/cookbook.rst
index f841a3a5..f7a21154 100644
--- a/docs/cookbook.rst
+++ b/docs/cookbook.rst
@@ -59,7 +59,7 @@ By default OCRmyPDF assumes the document is English.
 	ocrmypdf -l fre LeParisien.pdf LeParisien.pdf
 	ocrmypdf -l eng+fre Bilingual-English-French.pdf Bilingual-English-French.pdf
 
-Language packs must be installed for all languages specified. See :ref:`Installing additional language packs <languages>`.
+Language packs must be installed for all languages specified. See :ref:`Installing additional language packs <lang-packs>`.
 
 
 Produce PDF and text file containing OCR text
diff --git a/requirements.txt b/requirements.txt
index a19ba791..51ff74d7 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -7,3 +7,4 @@ reportlab == 3.3.0
 PyPDF2 == 1.26
 img2pdf == 0.2.1
 cffi == 1.9.1
+-e .