diff --git a/build_tools/requirements.txt b/build_tools/requirements.txt
index 0d4d43d8a7..10fd9a79a1 100644
--- a/build_tools/requirements.txt
+++ b/build_tools/requirements.txt
@@ -10,7 +10,6 @@ h5py
 sphinx
 pyparsing 
 html5lib 
-reportlab==3.6.6 
 pybind11 
 appdirs
 six