diff --git a/tox.ini b/tox.ini
index 68e0c6ae2..5df928c61 100644
--- a/tox.ini
+++ b/tox.ini
@@ -300,7 +300,7 @@ allowlist_externals =
 extras =
 commands_pre =
     bash -c "pip freeze -q | grep 'asdf @' > {env_tmp_dir}/requirements.txt"
-    git clone https://github.com/BAMWelDX/weldx.git
+    git clone https://github.com/braingram/weldx.git -b schema_cleanup
     pip install -e weldx[test,media]
     pip install -r {env_tmp_dir}/requirements.txt
     pip freeze
@@ -315,7 +315,7 @@ allowlist_externals =
 extras =
 commands_pre =
     bash -c "pip freeze -q | grep 'asdf @' > {env_tmp_dir}/requirements.txt"
-    git clone https://github.com/sunpy/sunpy.git
+    git clone https://github.com/braingram/sunpy.git -b schema_cleanup
     pip install -e sunpy[tests,all]
     pip install -r {env_tmp_dir}/requirements.txt
     pip freeze
@@ -330,7 +330,9 @@ allowlist_externals =
 extras =
 commands_pre =
     bash -c "pip freeze -q | grep 'asdf @' > {env_tmp_dir}/requirements.txt"
-    git clone https://github.com/DKISTDC/dkist.git
+    git clone https://github.com/braingram/sunpy.git -b schema_cleanup
+    pip install -e sunpy[tests,all]
+    git clone https://github.com/braingram/dkist.git -b schema_cleanup
     pip install -e dkist[tests]
     pip install -r {env_tmp_dir}/requirements.txt
     pip freeze