update link to upper-constraints.txt

[modeling/etsicatalog.git] / docs / requirements-docs.txt

diff --git a/docs/requirements-docs.txt b/docs/requirements-docs.txt
index 71df2ab..097282b 100644 (file)
--- a/docs/requirements-docs.txt
+++ b/docs/requirements-docs.txt
@@ -5,3 +5,4 @@ sphinxcontrib-seqdiag # BSD
 sphinxcontrib-swaggerdoc
 sphinxcontrib-spelling
 sphinxcontrib-plantuml
+six