diff --git a/hera_corr_f/control_software/casperfpga/requirements.txt b/hera_corr_f/control_software/casperfpga/requirements.txt
index d4c873b..1662094 100644
--- a/hera_corr_f/control_software/casperfpga/requirements.txt
+++ b/hera_corr_f/control_software/casperfpga/requirements.txt
@@ -36,7 +36,7 @@ port-for==0.3.1
 prompt-toolkit==1.0.15
 ProxyTypes==0.9
 ptyprocess==0.5.2
-Pygments==2.2.0
+Pygments==2.7.4
 pyparsing==2.2.0
 python-dateutil==2.6.1
 pytz==2017.2