diff --git a/requirements.txt b/requirements.txt
index 68d29ed..1f2117e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -6,7 +6,7 @@ ofxhome==0.3.2
 ofxparse==0.14
 six==1.9.0
 requests==2.20.0
-PyYAML==5.1
+PyYAML==5.4
 
 # unpackaged
 https://github.com/simplefin/siloscript/archive/v0.3.1.tar.gz
diff --git a/test-requirements.txt b/test-requirements.txt
index d446224..1af6fd3 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -1,4 +1,4 @@
 # Copyright (c) The SimpleFIN Team
 # See LICENSE for details.
 
-PyYAML==5.1
+PyYAML==5.4