diff --git a/.github/workflows/ci_workflows.yml b/.github/workflows/ci_workflows.yml
index d6419ba..d61eb6f 100644
--- a/.github/workflows/ci_workflows.yml
+++ b/.github/workflows/ci_workflows.yml
@@ -77,7 +77,7 @@ jobs:
 
           - name: Test with dev dependencies
             os: ubuntu-latest
-            python: '3.13-dev'
+            python: '3.13'
             toxenv: py313-test-devdeps
 
           - name: Test with old dependencies
diff --git a/CHANGES.rst b/CHANGES.rst
index e479af1..d187205 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -1,6 +1,8 @@
-1.5.0 (unreleased)
+1.5.0 (2024-11-19)
 ==================
 
+- Default Vega is now ``alpha_lyr_stis_011.fits``. [#400]
+
 1.4.0 (2024-04-11)
 ==================
 
diff --git a/synphot/config.py b/synphot/config.py
index 446364d..0fb73be 100644
--- a/synphot/config.py
+++ b/synphot/config.py
@@ -22,7 +22,7 @@ class Conf(ConfigNamespace):
 
     # STANDARD STARS
     vega_file = ConfigItem(
-        'https://ssb.stsci.edu/trds/calspec/alpha_lyr_stis_010.fits', 'Vega')
+        'https://ssb.stsci.edu/trds/calspec/alpha_lyr_stis_011.fits', 'Vega')
 
     # REDDENING/EXTINCTION LAWS
     lmc30dor_file = ConfigItem(
diff --git a/synphot/tests/test_utils.py b/synphot/tests/test_utils.py
index 13f42f0..3da283e 100644
--- a/synphot/tests/test_utils.py
+++ b/synphot/tests/test_utils.py
@@ -158,7 +158,7 @@ def test_download_data(tmp_path):
     # Use case where user redefined data file to be non-STScI.
     # While the given file will be used, default Vega is downloaded anyway.
     filename = [fname for fname in file_list_1
-                if fname.endswith('alpha_lyr_stis_010.fits')][0]
+                if fname.endswith('alpha_lyr_stis_011.fits')][0]
     os.remove(filename)
     with conf.set_temp('vega_file', '/custom/host/my_vega.fits'):
         file_list_2 = utils.download_data(