diff --git a/github_issue_summarization/requirements.txt b/github_issue_summarization/requirements.txt
index 3857b5c90..1a965345e 100644
--- a/github_issue_summarization/requirements.txt
+++ b/github_issue_summarization/requirements.txt
@@ -114,7 +114,7 @@ nltk==3.4.5
 nose==1.3.7
 notebook==5.0.0
 numba==0.35.0+10.g143f70e90
-numexpr==2.6.2
+numexpr==2.8.5
 numpy==1.14.0
 numpydoc==0.7.0
 odo==0.5.1