diff --git a/requirements.txt b/requirements.txt
index e3016f4..af65aac 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -14,7 +14,7 @@ more-itertools==5.0.0
 packaging==19.0
 pluggy==0.8.1
 py==1.7.0
-Pygments==2.3.1
+Pygments==2.7.4
 pyo3-pack==0.4.2
 pyparsing==2.3.1
 pytest==4.1.1