diff --git a/requirements.txt b/requirements.txt
index c4b587c..0fec5f5 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -70,7 +70,7 @@ pyasn1-modules==0.1.5
 PyAudio==0.2.11
 pybind11==2.2.4
 pycorenlp==0.3.0
-Pygments==2.2.0
+Pygments==2.7.4
 pyparsing==2.3.0
 pypiwin32==223
 pyreadline==2.1