diff --git a/tox.ini b/tox.ini
index 3e7bbbc5c..cc5149803 100644
--- a/tox.ini
+++ b/tox.ini
@@ -62,8 +62,8 @@ deps =
     devdeps: scipy>=0.0.dev0
     devdeps: pyerfa>=0.0.dev0
     devdeps: astropy>=0.0.dev0
-    devdeps: tweakreg>=0.0.dev0
     devdeps: requests>=0.0.dev0
+    devdeps: tweakwcs @ git+https://github.com/spacetelescope/tweakwcs.git
 use_develop = true
 pass_env =
     CI