diff --git a/infinigen/__init__.py b/infinigen/__init__.py
index 0597c2d9..9f7272bb 100644
--- a/infinigen/__init__.py
+++ b/infinigen/__init__.py
@@ -6,7 +6,7 @@
 import logging
 from pathlib import Path
 
-__version__ = "1.9.1"
+__version__ = "1.9.2"
 
 
 def repo_root():
diff --git a/pyproject.toml b/pyproject.toml
index 834eb462..5f9a973e 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -48,7 +48,7 @@ dependencies = [
 
 [project.optional-dependencies]
 terrain = [
-    "landlab>=2.6.0",
+    "landlab==2.6.0",
     "pyrender",
 ]
 vis = [