diff --git a/requirements.txt b/requirements.txt
old mode 100755
new mode 100644
index 76a999c..06a3c60
--- a/requirements.txt
+++ b/requirements.txt
@@ -38,7 +38,7 @@ plac==0.9.6
 preshed==1.0.0
 prompt-toolkit==1.0.14
 protobuf==3.5.0.post1
-psutil==5.4.2
+psutil==5.6.6
 ptyprocess==0.5.2
 Pygments==2.2.0
 pyparsing==2.2.0