diff --git a/environment-dev.yml b/environment-dev.yml
index 8e695be4..716443fa 100644
--- a/environment-dev.yml
+++ b/environment-dev.yml
@@ -12,7 +12,7 @@ name: terrainbento-dev
  - numpy
  - xarray
  - dask
- - landlab>=1.9
+ - landlab>=1.9, <2.0
  - jupyter
  - holoviews
  - pandas
diff --git a/setup.py b/setup.py
index 8ac4455c..666838ff 100644
--- a/setup.py
+++ b/setup.py
@@ -24,7 +24,7 @@
         "pandas",
         "xarray",
         "dask[complete]",
-        "landlab>=1.9",
+        "landlab>=1.9, <2.0",
     ],
     package_data={"": ["tests/*txt", "data/*txt", "data/*asc", "data/*nc"]},
 )