diff --git a/pyproject.toml b/pyproject.toml
index 4990dba..9e8af59 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -23,7 +23,7 @@ dependencies=["numpy",
               "scipy",
               "matplotlib",
               "packaging",
-              "unyt",
+              "unyt<3.0",
  ]
 
 [tool.setuptools]