diff --git a/requirements-docs.txt b/requirements-docs.txt
new file mode 100644
index 0000000000000000000000000000000000000000..366ee161f73dbbc5ed8f3339f1bd2b9b158c0097
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+++ b/requirements-docs.txt
@@ -0,0 +1,3 @@
+# requirements needed to build the docs
+
+Sphinx==1.1.3