diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 319b19c..1a2536a 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -22,9 +22,10 @@ permissions:
 
 jobs:
   test:
-    uses: OpenAstronomy/github-actions-workflows/.github/workflows/tox.yml@2835f0cacddf3f8de198db9afdb5354a5cebe0ef  # v2.6.3
+    uses: zacharyburnett/github-actions-workflows/.github/workflows/tox.yml@install_conda_packages_directly
     with:
-      conda: true
+      conda_packages: |
+        hstcal
       envs: |
         - linux: py311
         - linux: py312
diff --git a/tox.ini b/tox.ini
index 40fe13d..2bc2637 100644
--- a/tox.ini
+++ b/tox.ini
@@ -7,10 +7,8 @@ isolated_build = True
 description =
     run tests
 extras = tests
-conda_deps =
+allowlist_externals =
     hstcal
-conda_channels =
-    conda-forge
 commands_pre =
     pip freeze
 commands =