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-rw-r--r--doc/requirements.txt2
1 files changed, 1 insertions, 1 deletions
diff --git a/doc/requirements.txt b/doc/requirements.txt
index b666029a..555b7d20 100644
--- a/doc/requirements.txt
+++ b/doc/requirements.txt
@@ -3,4 +3,4 @@
# process, which may cause wedges in the gate later.
openstackdocstheme>=1.17.0 # Apache-2.0
reno>=2.5.0 # Apache-2.0
-sphinx>=1.6.2 # BSD
+sphinx!=1.6.6,>=1.6.2 # BSD