diff --git a/requirements-docs.txt b/requirements-docs.txt
index 494ca02..90c137d 100644
--- a/requirements-docs.txt
+++ b/requirements-docs.txt
@@ -97,9 +97,9 @@ snowballstemmer==1.2.1 \
     --hash=sha256:919f26a68b2c17a7634da993d91339e288964f93c274f1343e3bbbe2096e1128 \
     --hash=sha256:9f3bcd3c401c3e862ec0ebe6d2c069ebc012ce142cce209c098ccb5b09136e89 \
     # via sphinx
-sphinx==1.8.4 \
-    --hash=sha256:b53904fa7cb4b06a39409a492b949193a1b68cc7241a1a8ce9974f86f0d24287 \
-    --hash=sha256:c1c00fc4f6e8b101a0d037065043460dffc2d507257f2f11acaed71fd2b0c83c
+sphinx==2.0.1 \
+    --hash=sha256:423280646fb37944dd3c85c58fb92a20d745793a9f6c511f59da82fa97cd404b \
+    --hash=sha256:de930f42600a4fef993587633984cc5027dedba2464bcf00ddace26b40f8d9ce
 sphinxcontrib-websupport==1.1.0 \
     --hash=sha256:68ca7ff70785cbe1e7bccc71a48b5b6d965d79ca50629606c7861a21b206d9dd \
     --hash=sha256:9de47f375baf1ea07cdb3436ff39d7a9c76042c10a769c52353ec46e4e8fc3b9 \