bump py packages
diff --git a/requirements.txt b/requirements.txt
index 3039da2..aed1791 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,2 +1,2 @@
-PyYAML>=5.3.1
-asfpy>=0.20
+PyYAML>=5.4.1
+asfpy>=0.45