diff --git a/setup.cfg b/setup.cfg
index dd37e6e..0a82645 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -16,7 +16,7 @@ install_requires =
     fastavro
     numpy
     requests
-    yaml
+    pyyaml
 packages =
     lsst.alert.packet
     lsst.alert.packet.bin