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-rw-r--r--docs/requirements-docs.txt1
1 files changed, 1 insertions, 0 deletions
diff --git a/docs/requirements-docs.txt b/docs/requirements-docs.txt
index f5975c80..fe1de1ed 100644
--- a/docs/requirements-docs.txt
+++ b/docs/requirements-docs.txt
@@ -7,3 +7,4 @@ sphinxcontrib-spelling
sphinxcontrib-plantuml
sphinx_toolbox
sphinxcontrib-redoc
+six