diff --git a/environment-dev.yml b/environment-dev.yml
index ebb747e..7a35f48 100644
--- a/environment-dev.yml
+++ b/environment-dev.yml
@@ -12,7 +12,7 @@ dependencies:
    # for the package
    - scipy
    - numpy
-   - landlab>=1.10.1
+   - landlab>=1.10.1, <2.0
    # for the notebooks
    - jupyter
    - holoviews
diff --git a/setup.py b/setup.py
index d4c7540..51c3da2 100644
--- a/setup.py
+++ b/setup.py
@@ -28,5 +28,5 @@
     long_description_content_type="text/markdown",
     zip_safe=False,
     packages=find_packages(),
-    install_requires=["scipy", "numpy", "landlab>=1.10.1"],
+    install_requires=["scipy", "numpy", "landlab>=1.10.1, <2.0"],
 )