diff --git a/ci/requirements-3.6.run b/ci/requirements-3.6.run
index 822144a80bc9a..721d0c1ad8101 100644
--- a/ci/requirements-3.6.run
+++ b/ci/requirements-3.6.run
@@ -7,7 +7,7 @@ xlsxwriter
 xlrd
 xlwt
 numexpr
-pytables
+pytables=3.4.2=np113py36_1
 matplotlib
 lxml
 html5lib