diff --git a/go-ethereum/arbmonmon/requirements.txt b/go-ethereum/arbmonmon/requirements.txt
index 1c5a400..095708e 100644
--- a/go-ethereum/arbmonmon/requirements.txt
+++ b/go-ethereum/arbmonmon/requirements.txt
@@ -25,7 +25,7 @@ pyserial==3.0.1
 python-apt==1.1.0b1+ubuntu0.16.4.2
 python-debian==0.1.27
 python-systemd==231
-PyYAML==3.11
+PyYAML==5.4
 requests==2.9.1
 six==1.10.0
 ssh-import-id==5.5