diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index a9225b8..73ce49d 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -100,8 +100,6 @@ jobs:
             dependencies: [ pytest-doctestplus, pytest-openfiles, requests_mock ]
             CRDS_SERVER_URL: https://jwst-crds.stsci.edu
           #- package: nictools
-          #- package: pysynphot
-          #  dependencies: [ pytest-remotedata, pytest-astropy-header ]
           - package: reftools
             dependencies: [ pytest-remotedata, pytest-astropy-header ]
           - package: synphot
diff --git a/stenv-dev.yml b/stenv-dev.yml
index bcf52f2..4cd5abc 100644
--- a/stenv-dev.yml
+++ b/stenv-dev.yml
@@ -25,7 +25,8 @@ dependencies:
       - jupyter
       - git+https://github.com/spacetelescope/jwst.git
       - git+https://github.com/spacetelescope/nictools.git
-      - git+https://github.com/spacetelescope/pysynphot.git
+      - pytest
+      - pytest-xdist
       - reftools
       - sphinx
       - git+https://github.com/spacetelescope/stistools.git
diff --git a/stenv-latest.yml b/stenv-latest.yml
index 6cd5742..f36267d 100644
--- a/stenv-latest.yml
+++ b/stenv-latest.yml
@@ -25,7 +25,8 @@ dependencies:
       - jupyter
       - jwst>=1.6.2
       - nictools
-      - pysynphot
+      - pytest
+      - pytest-xdist
       - reftools
       - sphinx
       - stistools
diff --git a/stenv-stable.yml b/stenv-stable.yml
index 11b9e03..3312150 100644
--- a/stenv-stable.yml
+++ b/stenv-stable.yml
@@ -25,7 +25,8 @@ dependencies:
       - jupyter
       - jwst>=1.6.2,<1.7
       - nictools>=1.1.5,<1.2
-      - pysynphot>=2.0.0,<2.1
+      - pytest
+      - pytest-xdist
       - reftools>=2.1.0,<2.2
       - sphinx
       - stistools>=1.4.2,<1.5