diff --git a/ci/requirements-2.7_DOC_BUILD.run b/ci/requirements-2.7_DOC_BUILD.run
index cde0719aa027e..b87a41df4191d 100644
--- a/ci/requirements-2.7_DOC_BUILD.run
+++ b/ci/requirements-2.7_DOC_BUILD.run
@@ -1,4 +1,4 @@
-ipython=4.2.0
+ipython
 ipykernel
 sphinx
 nbconvert