diff --git a/g-cloud/requirements.txt b/g-cloud/requirements.txt
index 54cb0b2..7b2ece6 100644
--- a/g-cloud/requirements.txt
+++ b/g-cloud/requirements.txt
@@ -212,7 +212,7 @@ python-jsonrpc-server==0.3.4
 python-language-server==0.31.7
 pytz==2019.3
 PyWavelets==1.1.1
-PyYAML==5.3
+PyYAML==5.4
 pyzmq==18.1.1
 QDarkStyle==2.8
 QtAwesome==0.6.1