diff --git a/requirements.txt b/requirements.txt
index 0e03539..810b500 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -72,7 +72,7 @@ property-cached==1.6.4
 ptyprocess==0.6.0
 pycodestyle==2.6.0
 pyflakes==2.2.0
-Pygments==2.7.4
+Pygments==2.15.0
 pyhdfe==0.1.0
 pylint==2.5.2
 pymc3==3.9.3