diff --git a/ksweb/setup.py b/ksweb/setup.py
index 40d8f255..4549ccad 100644
--- a/ksweb/setup.py
+++ b/ksweb/setup.py
@@ -17,7 +17,7 @@
 install_requires = [
     "TurboGears2==2.4.0",
     "Beaker==1.10.0",
-    "PyYAML==5.1.1",
+    "PyYAML==6.0",
     "pypandoc==1.5",
     "Kajiki==0.8.0",
     "Ming==0.9.2",