diff --git a/requirements.txt b/requirements.txt
index f807cae..0bedfb2 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -7,7 +7,7 @@ requests>=2.21.0
 setuptools>=41.0.1
 scipy>=1.3.0
 pandas>=0.24.2
-psd_tools>=1.8.16
+psd_tools>=1.11.0
 docopt>=0.6.2
 numpy>=1.16.4
 seaborn>=0.9.0