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-rw-r--r--doc/requirements.pip3
1 files changed, 2 insertions, 1 deletions
diff --git a/doc/requirements.pip b/doc/requirements.pip
index ae72ec83..26d03b8f 100644
--- a/doc/requirements.pip
+++ b/doc/requirements.pip
@@ -6,7 +6,8 @@ doc8==0.8.1
pyenchant==3.1.1
sphinx==2.4.3
sphinx-rst-builder==0.0.3
-sphinxcontrib-spelling==5.3.0
+# 5.x requires Sphinx 3
+sphinxcontrib-spelling==4.3.0
sphinx_rtd_theme==0.5.0
sphinx-autobuild==0.7.1
sphinx-tabs==1.2.0