diff --git a/docs/requirements.txt b/docs/requirements.txt
index 2126bd66..634a1b65 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -1,2 +1,3 @@
 openflexure-microscope==1.0.0b0
-sphinxcontrib.httpdomain
\ No newline at end of file
+sphinxcontrib.httpdomain
+flask_cors
\ No newline at end of file