diff --git a/docs/index.rst b/docs/index.rst
index af771a7dbf..a7e59104a3 100644
--- a/docs/index.rst
+++ b/docs/index.rst
@@ -76,7 +76,7 @@ contextual information like on-sky views of the spectrograph slit.
 
 .. warning::
 
-   As of ``jdaviz`` version 3.5, python 3.8 is no longer supported. Please use python 3.9 or
+   As of ``jdaviz`` version 3.9, Python 3.9 is no longer supported. Please use Python 3.10 or
    greater to get the latest bug fixes and feature additions for ``jdaviz``.
 
 .. note::
diff --git a/docs/installation.rst b/docs/installation.rst
index c53b8c6d25..14e2894bbe 100644
--- a/docs/installation.rst
+++ b/docs/installation.rst
@@ -59,7 +59,7 @@ Common Issues
 If you encounter problems while following these installation instructions,
 please consult :ref:`known installation issues <known_issues_installation>`.
 
-Note that ``jdaviz`` requires Python 3.9 or newer. If your ``pip`` corresponds to an older version of
+Note that ``jdaviz`` requires Python 3.10 or newer. If your ``pip`` corresponds to an older version of
 Python, it will raise an error that it cannot find a valid package.
 
 Users occasionally encounter problems running the pure ``pip`` install above. For those
diff --git a/pyproject.toml b/pyproject.toml
index 1e28d78833..ec265c63b1 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -38,7 +38,6 @@ dependencies = [
     "sidecar>=0.5.2",
     "ipypopout>=0.0.11",
     "astroquery",
-    "y_py<0.5.5;python_version=='3.9'",
 ]
 dynamic = [
     "version",
diff --git a/tox.ini b/tox.ini
index fd12715869..19504ce2ba 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,6 +1,6 @@
 [tox]
 envlist =
-    py{38,39,310,311,312}-test{,-alldeps,-devdeps,-predeps}{-romandeps}{,-cov}
+    py{310,311,312}-test{,-alldeps,-devdeps,-predeps}{-romandeps}{,-cov}
     linkcheck
     codestyle
     pep517