diff --git a/pyproject.toml b/pyproject.toml
index 7e700d26..deff8ef7 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -17,7 +17,7 @@ dependencies = [
     "numpy>=1.20.0",
     "scipy>=1.5.0",
     "matplotlib>=3.2.0",
-    "astropy>=4.3.0",
+    "astropy>=5.1.0",
     "photutils>=1.0.0",
     "poppy>=1.0.0",
     "pysiaf>=0.19.1",
diff --git a/tox.ini b/tox.ini
index 20649552..a5605171 100644
--- a/tox.ini
+++ b/tox.ini
@@ -12,12 +12,12 @@ passenv = *
 deps =
     pytest
     pytest-astropy
-    astroquery
     poppydev,legacy,astropydev,latest: git+https://github.com/spacetelescope/poppy.git#egg=poppy
     pysiafdev,astropydev: git+https://github.com/spacetelescope/pysiaf.git#egg=pysiaf
     legacy: numpy==1.20.0
     legacy: pysiaf==0.11.0
-    legacy: astropy==4.3.0
+    legacy: astropy==5.1.0
+    legacy: astroquery==0.4.6
     astropydev: git+https://github.com/astropy/astropy
     poppydev: synphot
     latest: -rrequirements.txt