diff --git a/tox.ini b/tox.ini
index f7a33d38e..e957eb502 100644
--- a/tox.ini
+++ b/tox.ini
@@ -39,7 +39,6 @@ conda_deps =
     sextractor
     specutils
     sqlalchemy
-    pyyaml==5.4.1
     docs: sphinx
     docs: sphinx_rtd_theme
 conda_channels =