diff --git a/papers/SubTagger/requirements_pip.txt b/papers/SubTagger/requirements_pip.txt
index 768947c..ab273ef 100644
--- a/papers/SubTagger/requirements_pip.txt
+++ b/papers/SubTagger/requirements_pip.txt
@@ -85,7 +85,7 @@ ptyprocess==0.6.0
 py==1.8.0
 pyasn1==0.4.5
 pycparser==2.19
-Pygments==2.4.2
+Pygments==2.15.0
 pyOpenSSL==19.0.0
 pyparsing==2.4.0
 pyrsistent==0.15.2