diff --git a/pyproject.toml b/pyproject.toml
index a7ea30da1c8..b850f8b3466 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -61,7 +61,9 @@ dependencies = [
     # pyproj 3.3+ required for Python 3.10 wheels
     "pyproj>=3.3",
     # rasterio 1.3+ required for Python 3.10 wheels
-    "rasterio>=1.3",
+    # rasterio 1.4+ no longer supports merging WarpedVRT objects
+    # https://github.com/rasterio/rasterio/issues/3196
+    "rasterio>=1.3,<1.4",
     # rtree 1+ required for Python 3.10 wheels
     "rtree>=1",
     # segmentation-models-pytorch 0.2+ required for smp.losses module