diff --git a/requirements.txt b/requirements.txt
index 384e664..bc49271 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -64,7 +64,7 @@ ptyprocess==0.6.0
 pyasn1==0.4.4
 pyasn1-modules==0.2.2
 pycparser==2.18
-Pygments==2.2.0
+Pygments==2.7.4
 pyOpenSSL==18.0.0
 pyparsing==2.2.0
 pyquaternion==0.9.2